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5d9ab0dd1cab224de9f24fdf2ca99b26 | 101 309 | 4.3 Reference models | |
5d9ab0dd1cab224de9f24fdf2ca99b26 | 101 309 | 4.3.1 Communication layers | For the specification of ASSC systems, the communication layers (physical layer, channel layer and processing layer) defined in clause 3.1 apply. |
5d9ab0dd1cab224de9f24fdf2ca99b26 | 101 309 | 4.4 Business Model | The following business model shows the typical relationship between actors. Satellite operator Network access provider Service provider 1 Subscriber Service provider 2 Subscriber Figure 3: Typical business model In this business model: • the Network Access Provider (NAP) operates the Initialization Centre, one or several Control Centres, and Inbound and Outbound Gateways, • the Service Providers are connected to Inbound and Outbound Gateways, • the Service Providers to be connected to may be selected by the ST user, • according to the type of service (e.g. telephony), several subscribers may share a ST. ETSI ETSI TR 101 309 V1.1.1 (2002-04) 12 |
5d9ab0dd1cab224de9f24fdf2ca99b26 | 101 309 | 4.5 Outbound Channel | |
5d9ab0dd1cab224de9f24fdf2ca99b26 | 101 309 | 4.5.1 Outbound Channel in a star network | For a star network, an outbound channel is a channel arriving to the Satellite Terminal, and coming from an Outbound Gateway as shown in figure 4. OB-GW Init.Ctr ST3 ST2 ST1 AP Mngt Ctr OB-Traffic-Chl SP OB-Traffic-Chl IB-GW Content Provider Figure 4: Outbound Channel in a star network |
5d9ab0dd1cab224de9f24fdf2ca99b26 | 101 309 | 4.5.2 Outbound Channel in a mesh network | For a mesh network, an outbound channel is a channel arriving to a Satellite Terminal, and coming from another Satellite Terminal as shown in figure 5. -GW Init.Ctr ST3 ST2 ST1 AP DAMA Ctrlr OB-Traffic-Chl Switch OB-Traffic-Chl IOB-GW Figure 5: Outbound Channel for a mesh network ETSI ETSI TR 101 309 V1.1.1 (2002-04) 13 |
5d9ab0dd1cab224de9f24fdf2ca99b26 | 101 309 | 4.6 Inbound Channel | |
5d9ab0dd1cab224de9f24fdf2ca99b26 | 101 309 | 4.6.1 Inbound Channel in a star network | For a star network, an inbound channel is a channel arriving to the inbound Gateway, and coming from a Satellite Terminal as shown in figure 6. OB-GW Init.Ctr ST3 ST2 ST1 AP DAMA Ctrlr IB-Traffic-Chl SP IB-Traffic-Chl IB-GW Content Provider Figure 6: Inbound Channel in a star network |
5d9ab0dd1cab224de9f24fdf2ca99b26 | 101 309 | 4.6.2 Inbound Channel in a mesh network | For a mesh network, an inbound channel is a channel arriving to a Satellite Terminal, and coming from another Satellite Terminal as shown in figure 7. -GW Init.Ctr ST3 ST2 ST1 AP DAMA Ctrlr IB-Traffic-Chl Switch IB-Traffic-Chl IOB-GW Figure 7: Inbound Channel in a mesh network ETSI ETSI TR 101 309 V1.1.1 (2002-04) 14 |
5d9ab0dd1cab224de9f24fdf2ca99b26 | 101 309 | 5 Section II - Guidelines for technical specifications | |
5d9ab0dd1cab224de9f24fdf2ca99b26 | 101 309 | 5.1 Foreword | This clause is a guideline on the technical characteristics of the air interface of a system with ASSC which have to be specified either as mandatory or as optional requirements in an ETSI Technical Specification. |
5d9ab0dd1cab224de9f24fdf2ca99b26 | 101 309 | 5.2 Network architecture overview | A TS on ASSC system should define the applicable network architectures related to the air interface with the identification of the functional elements and the channels between them. Such network architectures may be star, mesh or both. |
5d9ab0dd1cab224de9f24fdf2ca99b26 | 101 309 | 5.2.1 Star network | An example of a star network architecture is given in figure 8. OB-GW Init.C ST3 ST2 ST1 DAMA ES Init.-Signaling-Ch OB-Traffic-Ch SP NAP OB-Traffic-Ch IB-Traffic-Ch IB-Traffic-Ch DAMA-Signaling-Ch ASSC IN-GW Figure 8: Example of star network architecture The TS should specify whether or not: • the Inbound GW and the Outbound GW are collocated or separated, • more than one Inbound GW and Outbound GW are operated in the same network, • the Inbound Traffic Channel and the Outbound Traffic Channel use the same or different satellites. ETSI ETSI TR 101 309 V1.1.1 (2002-04) 15 |
5d9ab0dd1cab224de9f24fdf2ca99b26 | 101 309 | 5.2.2 Mesh network | An example of a mesh network architecture is given in figure 9. -GW Init.Ctr ST3 ST2 ST1 DAMA Ctrlr Init-Sign-Chl OB-Traffic-Chl Switch AP OB-Traffic-Chl IB-Traffic-Chl IB-Traffic-Chl DAMA-Sign-Chl ASSC IOB-GW Figure 9: Example of mesh network architecture In this type of network, the Inbound Traffic Channel and an Outbound Traffic Channel are transmitted between STs and consequently the inbound and outbound channels have similar structures. |
5d9ab0dd1cab224de9f24fdf2ca99b26 | 101 309 | 5.3 Air interface overview | The TS should contain the following parts: • the physical layer specification, • the synchronization principles and specification, • the signalling for the control and monitoring of STs, • the signalling for the Air Interface management when applicable. |
5d9ab0dd1cab224de9f24fdf2ca99b26 | 101 309 | 5.4 Air interface physical layer | The TS should specify any transmission parameter necessary for the STs to access the network, covering but not limited to the following areas: • the radio frequency bands, • the access method or methods: FDMA, TDMA or CDMA, etc., • the modulation, the coding, • the framing according to the access method, • the data encapsulation, • the mechanism for rain fade compensation (e.g. uplink power control, adaptive transmission scheme, etc.^) when implemented, • etc. ETSI ETSI TR 101 309 V1.1.1 (2002-04) 16 |
5d9ab0dd1cab224de9f24fdf2ca99b26 | 101 309 | 5.5 Synchronization | The TS should describe the synchronization principles (time, frequency, etc.) and should specify: • the signals and information provided to the ST or to be received by the ST (e.g. GPS, etc.) for synchronization purpose, with the associated expected performances, • the signals and information to be transmitted by the ST for synchronization purpose with the required performances. |
5d9ab0dd1cab224de9f24fdf2ca99b26 | 101 309 | 5.6 Air interface signalling | |
5d9ab0dd1cab224de9f24fdf2ca99b26 | 101 309 | 5.6.1 General | The TS should specify: • the signalling for the control and monitoring of STs, • the signalling for the Air Interface management (Medium Access Control) when applicable, e.g.: - carriers, time slots, CDMA codes, bit rate allocation, - EIRP, FEC, modulation. For system with DAMA, the TS should specify the signalling request and assignment messages. |
5d9ab0dd1cab224de9f24fdf2ca99b26 | 101 309 | 5.6.2 Signalling messages | The TS should contain the list of the messages, the description of the general format of the messages and should specify each message. The exact message formats may be dependent on the network configuration. |
5d9ab0dd1cab224de9f24fdf2ca99b26 | 101 309 | 5.6.3 Control and monitoring of the ST | The TS should specify: • the state diagram of the ST. This state diagram should be consistent with the applicable harmonized standards referring article 3.2 of the R&TTE, • the events (e.g. messages, signals, etc.) that may occur and to consider, and the required consequent action. Where applicable, the TS should specify for: • Terminal login: the set of messages used to identify the terminal and to verify the hardware and software configurations, • Terminal start-stop: the messages used to start and stop either a specific terminal or a set of terminals, • Terminal alarms: the messages used to inform about the operational parameters, equipment states and faults, • Terminal steady state: the messages transmitted during the steady state of the ST, • Terminal software loading: the terminal software loading process and messages, • Terminal line-up: the messages for line-up and maintenance, These specifications may be defined either mandatory requirements or additional optional requirements for compliance with the TS or the TS with the selected options. ETSI ETSI TR 101 309 V1.1.1 (2002-04) 17 |
5d9ab0dd1cab224de9f24fdf2ca99b26 | 101 309 | 5.6.4 Air interface management | The air interface resource management description and messages are only needed for DAMA purpose, if such a facility is offered by the system. For systems with DAMA, the TS should specify the messages used for the air interface management (e.g. request, assignment, release). ETSI ETSI TR 101 309 V1.1.1 (2002-04) 18 History Document history V1.1.1 April 2002 Publication |
da2fb3a80bb7b62b0e043abd45fd7925 | 101 150 | 1 Scope | The present document studies the application of prTBR 21 and the published TBR 21[1] at a national level and considers opportunities to build upon the experience gained. Topics taken into account include: a) the scope of actual implementations; b) problems encountered or foreseen in practical application; c) interpretation of the Scope of TBR 21; d) the relationship with TBR 37 [9] and TBR 38 [3] (including the opportunities for convergence towards a single access CTR for the analogue PSTN); e) possible extensions to the applicability of TBR 21 (including the opportunity for an early application of TBR 38); f) relationships with other related areas, e.g. analogue leased line TBRs. |
da2fb3a80bb7b62b0e043abd45fd7925 | 101 150 | 2 References | The following documents contain provisions which, through reference in this text, constitute provisions of the present document. • References are either specific (identified by date of publication, edition number, version number, etc.) or non-specific. • For a specific reference, subsequent revisions do not apply. • For a non-specific reference, subsequent revisions do apply. • A non-specific reference to an ETS shall also be taken to refer to later versions published as an EN with the same number. [1] TBR 21: "Terminal Equipment (TE); Attachment requirements for pan-European approval for connection to the analogue Public Switched Telephone Networks (PSTNs) of TE (excluding TE supporting the voice telephony service) in which network addressing, if provided, is by means of Dual Tone Multi Frequency (DTMF) signalling". [2] TBR 10: "Digital Enhanced Cordless Telecommunications (DECT); General terminal attachment requirements: Telephony applications". [3] TBR 38: "Public Switched Telephone Network (PSTN); Attachment requirements for a terminal equipment incorporating an analogue handset function capable of supporting the justified case service when connected to the analogue interface of the PSTN in Europe". [4] TBR 15: "Business TeleCommunications (BTC); Ordinary and Special quality voice bandwidth 2- wire analogue leased lines (A20 and A2S); Attachment requirements for terminal equipment interface". [5] TBR 17: "Business TeleCommunications (BTC); Ordinary and Special voice bandwidth 4 wire analogue leased lines (A40 and A4S); Attachment requirements for terminal equipment interface". [6] TR 101 149: "2 wire analogue voice band interfaces; TE transmitting voice signals; Test simulation for level limitation requirements". [7] EG 201 120: "Public Switched Telephone Network (PSTN); Method of rating terminal equipment so that it can be connected in series and/or in parallel to a Network Termination Point (NTP)". [8] EG 201 121: "A guide to the application of TBR 21". ETSI TR 101 150 V1.1.1 (1998-05) 6 [9] TBR 37: "Terminal Equipment (TE); Attachment requirements for pan-European approval for connection to the analogue Public Switched Telephone Networks (PSTNs) of TE supporting the voice telephony service in which network addressing, if provided, is by means of Dual Tone Multi Frequency (DTMF) signalling". |
da2fb3a80bb7b62b0e043abd45fd7925 | 101 150 | 3 Definitions, symbols and abbreviations | TBR 21 [1] definitions, symbols and abbreviations apply. Additionally following abbreviations are to be considered. |
da2fb3a80bb7b62b0e043abd45fd7925 | 101 150 | 3.1 Abbreviations | For the purposes of the present document, the following abbreviations apply: ACTE Advisory Committee for Terminal Equipment AN Advisory Note ATA Analogue Terminals and Access ATAAB TRAC Analogue Type Approval Advisory Board CLI Calling Line Identity CTR Common Technical Regulation dB decibel d.c. direct current e.m.f. electromotive force LD Loop Disconnect (decadic) NTP Network Termination Point PABX Private Automatic Branch eXchange PBX Private Branch eXchange PSTN Public Switched Telephone Network RT Requirements Table TBR Technical Basis for Regulation TE Terminal Equipment TRAC Technical Regulations Applications Committee |
da2fb3a80bb7b62b0e043abd45fd7925 | 101 150 | 4 Countries applying (pr)TBR 21 | A number of countries have already implemented national regimes based upon (pr)TBR 21. This number is increasing. However inconsistencies in application have arisen, in particular, because of the ambiguities over the definitions of "voice equipment" and of the extent of the justified case service of voice telephony covered by Article 4(g) of Directive 91/263/EEC. Also, where requirements in (pr)TBR 21 have arisen primarily from the needs of a single network, or a small number of networks, certain requirements have not always been applied mandatorily (e.g. the d.c. characteristic requirements relating to the 60mA limit and operation at very low line currents). These relaxations have been applied so as to avoid unnecessary demands on TE not intended to be used on the networks in question. In a few cases, it would be useful to investigate the future need for retaining such requirements in the common text. In the case of operation at very low line currents, proposals for relaxations in the requirements have already been tabled in the course of work on prTBR 37 and prTBR 38. There are examples of requirements being introduced that are more onerous than (pr)TBR 21. Where such requirements have not been pressed for incorporation in (pr)TBR 21 it is assumed that they will disappear once TBR 21 comes formally into use. Although not covered by the Scope of TBR 21, several countries have included coverage of loop disconnect dialling. In one case this consists of including the use of loop disconnect dialling within the approval granted but stating specifically that there are NO mandatory requirements to be met. Some countries have taken the opportunity to use (pr)TBR 21 as the basis for type approval of all PSTN TE, including TE covered by Article 4(g) of Directive 91/263/EEC. ETSI TR 101 150 V1.1.1 (1998-05) 7 In some countries, older, national, standards have been retained in whole or in part to serve as voluntary design guides. These can assist manufacturers in dealing with parameters relating to network behaviour which it is useful to take account of in designing TE for best performance, even though these parameters may be outside the scope of the essential requirements of Directive 91/263/EEC and consequently outside of the scope of TBR 21. There could be merit in collecting such useful, network specific, advice and making its existence more visible. Where regimes based upon (pr)TBR 21 have been introduced, practical experience has shown that they are very popular with TE manufacturers who generally prefer them to previous systems. There is no evidence of significant problems arising from the application of (pr)TBR 21 in this fashion, from either the TE manufacturers, the network operators, or the notified bodies. However, it should be noted that most countries implementing these regimes have disapplied some of the requirements contained in (pr)TBR 21, in particular, the 60 mA line current limit and the extreme low line current requirements which can cause difficulties for terminal designers. Some information on such schemes is given below. Table 1: Countries applying or contemplating applying (pr)TBR 21 versions and field of application Country TBR 38 Other acoustic Answering Modem PABX LD Multiline Telephones Transducers Machines Fax dial CH X X X X X X X DK X X X X IRL X X X X X X X Lx Unknown Unknown Unknown Unknown Unknown Unknown Unknown NL X X X X X X X S X X X X X X X SF X X X X Unknown UK X X X X X Iceland Unknown Unknown Unknown Unknown Unknown Unknown Unknown NOTE: In the above table an "X" signifies that (pr)TBR21 is being applied for that combination of country and field of application. Table 2: Countries applying or contemplating applying (pr)TBR 21 versions. Deviations to the requirements resulting from application within the scope of TBR 21 Country Additional requirements Relaxed or deleted requirements (+ req) (- req) CH Ring sensitivity 60mA-limit, min. loop current DK None None IRL Reduced time to dial first digit, ring detect cadence, call progress tone monitoring (special circumstances), 14dB return loss for voice terminals 60mA-limit, min. loop current, output Signal Balance, dial tone detect range, Transition between quiescent and loop Lx Unknown Unknown NL None 60mA-limit, min loop current, d.c. characteristics S None 60mA-limit, transition between quiescent and loop SF None None UK None 60mA-limit, min. loop current, transition between quiescent and loop Iceland Unknown Unknown ETSI TR 101 150 V1.1.1 (1998-05) 8 Table 3: Countries applying or contemplating applying (pr)TBR 21 versions. Deviations to the requirements resulting from application beyond the scope of TBR 21 Country Additional requirements Relaxed or deleted requirements (+ req) (- req) CH LD. multi-line None DK None None IRL LD, Series & parallel, connection arrangements, DTMF outband for voice, 14dB return loss for voice terminals None Lx Unknown Unknown NL LD, Series connection, PBX signalling, CLI access None S PABX, loudness rating None SF None Unknown UK None LD (included but with no mandatory requirements) Iceland Unknown Unknown |
da2fb3a80bb7b62b0e043abd45fd7925 | 101 150 | 5 Scope interpretation issues | Although the scope of TBR 21 covers voice equipment except that covered by the justified case service of voice telephony referenced by Article 4(g) of Directive 91/263/EEC, inconsistencies have arisen because of the ambiguities over the definitions of "voice equipment" and of the extent of the of the justified case service of voice telephony covered by Article 4(g) of Directive 91/263/EEC, and because of the overlap of the Scopes of TBR 21 and TBR 37. The scope of TBR 38 describes the voice telephony justified case service, when applied to analogue PSTN non-cordless TE, as applying only to TEs supporting a handset telephony function without any further features (but not applicable to TE specially designed for the disabled or for hostile environments, cordless telephones, handsfree or loudspeaking voice telephony functions, or handset telephony functions employing non-linear or time variant techniques for the processing of the signal) In the case of cordless telephony, DECT, covered by TBR 10 is defined as a voice telephony justified case application. From the above it could be concluded that every TE intended to be connected to the analogue PSTN, excluding TE within the scope of TBR 10 or TBR 38, could be considered within the scope of TBR 21. This includes: a) handset telephones employing non-linear or time variant techniques for the processing of the signal; b) telephones specially designed for disabled people; c) TE providing a handsfree or loudspeaking voice telephony function; d) answering machines; e) voice-mail systems; f) through connecting TE (including PABX). The fact that the scope of TBR 37 includes "any voice telephony service" causes confusion because it makes it possible to consider most of the above examples as within the scope of both TBR 21 and TBR 37. As a result, some countries have been hesitant to apply (pr)TBR 21 to "voice equipment" which appears to fall within the scope of both TBRs. To avoid such confusion it seems essential that action should be taken to converge the applicability of TBR 21 and TBR 37 into a single access TBR for all analogue PSTN applications (e.g. in a future edition of TBR 21 by implementing the extension referred to in subclause 6.1). It seems most likely that any "scope matching" exercises would be very long and unsuccessful and would still result in disputes about what was or was not covered by each TBR. However, the interpretation of the Scopes of TBRs is a matter for ACTE/TRAC and cannot be determined by ETSI. ETSI TR 101 150 V1.1.1 (1998-05) 9 NOTE: Although TBR 21 does not explicitly specify the detail of test methods for the all types of TE mentioned above, studies carried out in connection with TBR 37 (e.g. TR 101 149) have resulted in detailed definitions of test methods suitable for such applications. An example of the technical contents of a possible ATAAB Advisory Note based upon these methods, and which could enhance the reproducibility of test results obtained against (pr)TBR 21, is given in annex A. |
da2fb3a80bb7b62b0e043abd45fd7925 | 101 150 | 6 Possible extensions of the application of TBR 21 | In this clause a number of possible extensions of the application of TBR 21 are presented. However, it is noted that the implementation of such possibilities by means of a change to the scope of TBR 21 would need a formal EU mandate and would be likely to be time consuming. Examples are provided of possible extensions that would extend the single market to be created by TBR/CTR 21 to a much larger range of TE, by creating harmonized specifications for the most common PSTN features not currently covered by TBR/CTR 21 and therefore still subject to national regulations. Such harmonized specifications could be used even in the absence of a revised TBR/CTR 21, e.g. at a national level. It also covers the suggestion to combine, into a single TBR, all applicable analogue PSTN access requirements. |
da2fb3a80bb7b62b0e043abd45fd7925 | 101 150 | 6.1 Voice telephony justified case TE | In the light of the problems highlighted in clause 5 of the present document, and taking into account the technical content of the present prTBR 37, it seems a straightforward task to extend the application of TBR 21 to support voice telephony justified case service TEs covered by TBR 38. Apart from the level of testing detail contained in prTBR 37, there are minimal technical differences between it and TBR 21. |
da2fb3a80bb7b62b0e043abd45fd7925 | 101 150 | 6.2 Loop Disconnect dialling function | Loop disconnect dialling, although a decreasingly important signalling method, is still employed on a significant number of lines. Whilst on some networks 100% of customers have access to DTMF dialling, on others a high proportion of customers still have to use loop disconnect. It is recognized that major differences in the TE requirements specified by different countries have impeded achieving a harmonized solution for this market segment. However, it is a fact that the differences in the technical characteristics of the TEs themselves that meet all of these differently stated requirements are relatively minor. Also, with modernization of the network switching equipment some of the strict parameters required for interworking with electro-mechanical switches are no longer important on many networks. It could therefore now be possible to produce a simple specification for TEs which contained either no country variations or contained very few, enabling customers without access to DTMF dialling to enjoy the full benefit of the market in TBR 21 terminals, either by eliminating the need for additional national approvals of the loop disconnect dialling function, or by providing a common specification which could be used at a national level. |
da2fb3a80bb7b62b0e043abd45fd7925 | 101 150 | 6.3 Multi-line TE | Although the decreasing price of ISDN TE brought about by technology and the availability of harmonized standards has resulted in a reduction of the analogue PSTN market share of some types multi-line TE, the harmonization of analogue PSTN access requirements could be of particular benefit in the market place for consumers and small businesses. It should be noted that the current scope does not exclude TE with multiple PSTN line connections per se. However, there could physical or functional issues to be addressed in respect or certain types of application. Such an extension might introduce additional or changed requirements, e.g. the method of connection to line. ETSI TR 101 150 V1.1.1 (1998-05) 10 |
da2fb3a80bb7b62b0e043abd45fd7925 | 101 150 | 6.4 Series/parallel connection | Currently the scope of TBR 21 is restricted to the case of a PTSN line with a single TE attached to it. The connection of a number of TE to a single line, in series or parallel combination has become very common. ETSI has published EG 201 120 [7] on this subject which explains how such connections could be achieved. There needs to be a formalized method of using the Guide in conjunction with TBR/CTR 21. |
da2fb3a80bb7b62b0e043abd45fd7925 | 101 150 | 7 Impact upon non-PSTN TE | The most direct implication of the findings of the present document in other areas is the possible application of some of its conclusions to voice equipment TE within the scope of TBR 15 and TBR 17. Since analogue leased line TEs are, technically, closely related to analogue PSTN TEs, and sometimes the same, there is clear merit in the test methods having a high degree of commonality with TBR 21. In particular, the proposals for additional testing detail in respect of voice terminals could be usefully employed in conjunction with these TBRs. |
da2fb3a80bb7b62b0e043abd45fd7925 | 101 150 | 8 Conclusions | |
da2fb3a80bb7b62b0e043abd45fd7925 | 101 150 | 8.1 TBR 21/37 scope issues | The current overlap between the Scopes of TBR 21 and TBR 37, where voice TEs NOT providing services subject to Article 4(g) of Directive 91/263/EEC appear to be within the Scope of both Directives simultaneously, could cause significant problems were the both TBRs to coexist. It could prove very difficult successfully to eliminate the overlap between the Scopes of TBR 21 and TBR 37. It would almost certainly be simpler to remove the exclusion in respect of Article 4(g) telephony terminals that currently exists in TBR 21, and to incorporate whatever other changes to the text of TBR 21 might be essential in order to address the extended range of equipment to be covered, so as to bring all type of analogue PSTN TE under a single access TBR. Some European countries have already introduced national regulations based upon (pr)TBR 21 which cover voice terminals, including those subject to Article 4(g) of Directive 91/263/EEC. This supports the view that a single access standard is a practical and desirable proposition. |
da2fb3a80bb7b62b0e043abd45fd7925 | 101 150 | 8.2 Introduction of TBR 38 | TE manufacturers, in particular, would like an early opportunity to exploit TBR 38 without being forced to submit their equipment to additional national specific approval. Considering the long timeframe for the possible adoption of a TBR 37, there should be a mechanism for exploiting TBR 38 in conjunction with other access requirements, e.g. those in TBR 21, supplemented as necessary by additional testing detail. |
da2fb3a80bb7b62b0e043abd45fd7925 | 101 150 | 8.3 Progression of prTBR 37 | Until the issues referred to in 8.1 have been addressed it is premature to consider releasing prTBR 37 for public enquiry. |
da2fb3a80bb7b62b0e043abd45fd7925 | 101 150 | 8.4 Testing detail | TBR 21 does contain requirements relating to all the access requirements specified in prTBR 37. However, TBR 21 (in common with other analogue access TBRs such as TBR 15 and TBR 17) does not provide the detail of testing methods for voice equipment, but leaves this to the expertise of the accredited laboratories. It would be useful to provide additional guidance on testing methods for voice equipment to aid reproducibility. prTBR 37 contains text which appears to be suitable for this purpose. This text could potentially be made available for use with TBR 21, e.g. via ATAAB ANs. ETSI TR 101 150 V1.1.1 (1998-05) 11 |
da2fb3a80bb7b62b0e043abd45fd7925 | 101 150 | 8.5 Functions outside the scope of TBR 21 | |
da2fb3a80bb7b62b0e043abd45fd7925 | 101 150 | 8.5.1 Loop disconnect dialling | It would be useful and it should be possible to produce harmonized requirements and tests for loop disconnect dialling which could be used to supplement TBR 21 for the national purposes. It could be useful to incorporate in the future harmonized requirements relating to loop disconnect dialling in a future edition of TBR 21, although this would necessitate a change in its scope. |
da2fb3a80bb7b62b0e043abd45fd7925 | 101 150 | 8.5.2 Multi-line TE | It would be useful to investigate whether any additional requirements are essential for the application of TBR 21 to any multi-line facility which might not fall under the present scope of TBR 21, and for requirements so identified to be available in a harmonized form to aid their application for national purposes or to support any extension to the applicability of TBR 21 which might be agreed in the future. |
da2fb3a80bb7b62b0e043abd45fd7925 | 101 150 | 8.5.3 Series/parallel connection | A formal mechanism should be provided whereby TBR/CTR 21 TE can be applied in the case where TE is configured in accordance with the scheme described in EG 201 120 [7]. |
da2fb3a80bb7b62b0e043abd45fd7925 | 101 150 | 8.6 Non-PSTN TE | It could improve the effectiveness of the use of TBR 15 and TBR 17 for voice equipment if the test details suggested to be employed for TBR 21 were also available for use with these TBRs. A possible mechanism for achieving this might be by means of ATAAB ANs. 8.7 New activities required to implement the conclusions of the present document The following activities would be required to implement the conclusions of the present document: a) addition of detailed guidance on test methods to be used when applying TBR 21 to voice terminals; b) possible extension to TBR 21 scope to cover Article 4(g) voice telephony terminals; c) possible extension to TBR 21 scope, or TBR 21 add-on, to cover Loop Disconnect dialling; d) possible extension to TBR 21 scope, or TBR 21 add-on, to cover certain Multi-Line facilities; e) possible extension to TBR 21 scope, or TBR 21 add-on, to cover series/parallel connection; f) addition of detailed guidance on test methods to be used when applying TBR 15 and TBR 17 to voice terminals. ETSI TR 101 150 V1.1.1 (1998-05) 12 Annex A: Possible additional test detail for voice TE This annex contains examples of relevant test methods derived from existing ATA documents, including TBR 37, that provide additional details to support testing of voice equipment against access requirements, e.g. TBR 21. A.1 Introduction There is a risk that Voice Terminal Equipment to be approved to TBR 21 could yield different test results from test house to test house if some more detailed guidance is not provided in respect of certain tests. This annex specifies additional test method details which, if used, should minimize this risk. The present document is based on technical studies being carried out by ETSI project ATA. The present annex contains examples of relevant test methods taken from existing ATA documents, including prTBR 37, that provide additional details to support testing of voice equipment against the access requirements of TBR 21. A.2 Normative references [1] TBR 21: "Attachment requirements for pan-European approval for connection to the analogue Public Switched Telephone Networks (PSTNs) of TE (excluding TE supporting the voice telephony service) in which network addressing, if provided, is by means of Dual Tone Multi Frequency (DTMF) signalling". A.3 Voice signal to be used during tests A.3.1 Type Pink noise: for the purpose of the present document the pink noise test signal, adjusted at the relevant Reference Point, shall be band limited to the frequency range 200 Hz to 3 800 Hz. There are two recommended methods of achieving this, the choice of which depends upon the filtering technique used. a) Where analogue filters are used the slopes of the band limiting filter shall be at least 24 dB/ octave and the out- of-band attenuation shall be at least 25 dB (see figure 1). The third octave spectrum of electrically generated pink noise shall be equalized to within ± 1 dB, while acoustically generated pink noise shall be equalized (in free field) to within ± 3 dB. NOTE 1: When measured with 1/3 octave bandwidth at standard frequencies, an ideal filtered pink noise signal will be attenuated 1,1 dB at 200 Hz and 0,9 dB at 4 kHz compared to a non-filtered pink noise signal. ETSI TR 101 150 V1.1.1 (1998-05) 13 200 Hz -3dB 3800 Hz 24 dB/Octave 24 dB/Octave 25 dB Figure A.1: Response for the band-limiting filter b) Where digital filters are used the detail of a) above applies, but with the 3dB attenuation points set at 225 Hz and 3 563 Hz instead of 200 Hz and 3 800 Hz. Speech test signal: this shall be band-limited pink noise (see definition above) that is continuously modulated to be ON for a period of 250 ms ± 5 ms and OFF for a period of 150 ms ± 5 ms. The signal level specified refers to the level of the signal during the ON period. Pseudo speech signal: this shall be a speech test signal (see definition above) with 11 cycles and then followed by a period of 5,6 seconds ± 20 ms OFF giving an activity ratio of approximately 28 %. NOTE 2: The total OFF time after the 11th ON burst will be 5,75 seconds. NOTE 3: The timing tolerances given above will result in a tolerance for the r.m.s. level of ± 0,1 dB. This pseudo speech signal is repeated for as long as is necessary for any measurements to be made. Where the Supplier declares that the pseudo speech signal is not appropriate for the intended use of the TE, an alternative test signal may be specified by the Supplier providing that the overall activity ratio during a one minute period shall be within the range of 23 % to 33 %. Any alternative signal shall be adjusted to give the same r.m.s. level over a one minute period as the level for the pseudo speech signal. A.3.2 Levels Table A.1: Input signal levels (ON) except for A.4.7.3.2 A.4.7.3.2 only Stimulating point: Stimulated point: nominal 5 Vpp analogue NTP simulator TCP -12 dBV e.m.f. -7 dBV e.m.f. digital (NTP or TCP or other) TCP or ICP or other -12,5 dBm0 -7,5 dBm0 analogue TCP simulator ICP -4 dBV e.m.f. +1 dBV e.m.f. MRP of a handset or headset microphone -4,7 dBPa +0 dBPa HFRP of a handsfree microphone -28,7 dBPa -24 dBPa NOTE: Analogue interfaces (PSTN-TCP and ICP) shall be stimulated with generators presenting a source impedance of Zref defined in TBR 21. Equalization and level calibration of the pink noise signal shall be done with the generator disconnected from the load. ETSI TR 101 150 V1.1.1 (1998-05) 14 A.4 Electro-acoustic interfaces A.4.1 Handset Mouth Reference Point (MRP): generally the appropriate Mouth Reference Point from ITU-T Recommendations P.34, P.56 etc., shall be used. Where a supplier has declared that the ITU MRP would be inappropriate for the intended use of the TE, then the microphone positioning described by the supplier shall be applied. A.4.2 Hands-free Hands-Free Reference Point (HFRP): a point located on the axis of the artificial mouth, at 50 cm from the lip ring, where the level calibration is made in free field. It corresponds to the measurement point n° 11, as defined in ITU-T Recommendation P.51. A.4.3 Headset For headsets the same measuring methods apply as for handsets. If the microphone positioning for testing is not defined by the manufacturer, it will correspond to the "corner of the mouth" position as defined in the ITU-T Recommendation P.38, clause 1, note. A.4.4 Other interfaces TE with other transducers arrangements will be tested in accordance with the manufacturer's instructions. A.5 Electrical interfaces simulations A.5.1 Analogue 2-wire NTP (Network Termination Points) The analogue 2-wire NTP simulation is the one used for the tests in TBR 21. A.5.2 Analogue 2-wire TCP (TCP of TE behind TCE) The analogue 2-wire TCP simulation is derived from TBR 21. For test purposes it will have an equivalent d.c.-resistance of 400 Ω and an impedance of Zref as defined in TBR 21 (270 Ω + [750 Ω // 150 nF]). A.5.3 Other harmonized interfaces Should be simulated according the corresponding standards. A.5.4 Non harmonized interfaces Should be simulated according the manufacturers instructions. A.6 Requirements Table (TBR-RT) The requirements table of TBR 21, annex B is still applicable. ETSI TR 101 150 V1.1.1 (1998-05) 15 History Document history V1.1.1 May 1998 Publication ISBN 2-7437-2191-X Dépôt légal : Mai 1998 |
09855bad8859a0dbf7a658d27e149576 | 101 149 | 1 Scope | The present document studies the possibility of using a single pseudo-speech signal as test simulation for level limitation requirements. This applies to Terminal equipment (TE) transmitting voice signals and having a 2-Wire analogue voice band interface. |
09855bad8859a0dbf7a658d27e149576 | 101 149 | 2 References | The following documents contain provisions which, through reference in this text, constitute provisions of the present document. • References are either specific (identified by date of publication, edition number, version number, etc.) or non-specific. • For a specific reference, subsequent revisions do not apply. • For a non-specific reference, subsequent revisions do apply. • A non-specific reference to an ETS shall also be taken to refer to later versions published as an EN with the same number. [1] ITU-T Recommendation G.115 (1996): "Mean active speech level for announcements and speech synthesis systems". [2] ETR 250 (1996): "Transmission and Multiplexing (TM); Speech communication quality from mouth to ear for 3,1 kHz handset telephony across networks". [3] ITU-T Recommendation P.56 (1993): "Objective measurement of active speech level". [4] TBR 21: "Terminal Equipment (TE); Attachment requirements for pan-European approval for connection to the analogue Public Switched Telephone Networks (PSTNs) of TE (excluding TE supporting the voice telephony service) in which network addressing, if provided, is by means of Dual Tone Multi Frequency (DTMF) signalling". [5] prTBR 37: "Terminal Equipment (TE); Attachment requirements for pan-European approval for connection to the analogue Public Switched Telephone Networks (PSTNs) of TE supporting the voice telephony service in which network addressing, if provided, is by means of Dual Tone Multi Frequency (DTMF) signalling". [6] TBR 38: "Public Switched Telephone Network (PSTN); Attachment requirements for a terminal equipment incorporating an analogue handset function capable of supporting the justified case service when connected to the analogue interface of the PSTN in Europe". [7] TBR 15: "Business TeleCommunications (BTC); Ordinary and Special quality voice bandwidth 2-wire analogue leased lines (A2O and A2S); Attachment requirements for terminal equipment interface". [8] TBR 17: "Business TeleCommunications (BTC); Ordinary and Special quality voice bandwidth 4-wire analogue leased lines (A4O and A4S); Attachment requirements for terminal equipment interface". [9] TBR 8: "Integrated Services Digital Network (ISDN); Telephony 3,1 kHz teleservice; Attachment requirements for handset terminals". ETSI TR 101 149 V1.1.1 (1998-05) 6 |
09855bad8859a0dbf7a658d27e149576 | 101 149 | 3 Definitions and abbreviations | |
09855bad8859a0dbf7a658d27e149576 | 101 149 | 3.1 Definitions | For the purposes of the present document, the definitions given TBR 21 [4] and the following terms and definitions apply. |
09855bad8859a0dbf7a658d27e149576 | 101 149 | 3.1.1 General terms | Installation Connection Point: a point on a user installation, intended to accept the connection of a TE. NOTE 1: The ICP may also be part of a series connected TE. NOTE 2: The ICP may present to the TE physical characteristics identical to those of the NTP. |
09855bad8859a0dbf7a658d27e149576 | 101 149 | 3.1.2 Pseudo speech test signal | |
09855bad8859a0dbf7a658d27e149576 | 101 149 | 3.1.2.1 Type | pink noise: for the purpose of the present document the pink noise test signal, adjusted at the relevant reference point, shall be band limited to the frequency range 200 Hz to 3 800 Hz. There are two recommended methods of achieving this, the choice of which depends upon the filtering technique used: a) Where analogue filters are used the slopes of the band limiting filter shall be at least 24 dB/octave and the out-of-band attenuation shall be at least 25 dB (see figure 1). The third octave spectrum of electrically generated pink noise shall be equalized to within ± 1 dB, while acoustically generated pink noise shall be equalized (in free field) to within ± 3 dB; NOTE 1: When measured with 1/3 octave bandwidth at standard frequencies, an ideal filtered pink noise signal will be attenuated 1,1 dB at 200 Hz and 0,9 dB at 4 kHz compared to a non-filtered pink noise signal. 200 Hz -3 dB 3 800 Hz 24 dB/Octave 24 dB/Octave 25 dB Figure 1: Response for the band-limiting filter b) Where digital filters are used the detail of a) above applies, but with the 3 dB attenuation points set at 225 Hz and 3 563 Hz instead of 200 Hz and 3 800 Hz. speech test signal: this shall be band-limited pink noise (see definition above) that is continuously modulated to be ON for a period of 250 ms ± 5 ms and OFF for a period of 150 ms ± 5 ms. The signal level specified refers to the level of the signal during the ON period. ETSI TR 101 149 V1.1.1 (1998-05) 7 pseudo speech signal: this shall be a speech test signal (see definition above) with 11 cycles and then followed by a period of 5,6 seconds ± 20 ms OFF giving an activity ratio of approximately 28 %. NOTE 2: The total OFF time after the 11th ON burst will be 5,75 seconds. NOTE 3: The timing tolerances given above will result in a tolerance for the r.m.s. level of ± 0,1 dB. This pseudo speech signal is repeated for as long as is necessary for any measurements to be made. Where the supplier declares that the pseudo speech signal is not appropriate for the intended use of the TE, an alternative test signal may be specified by the supplier providing that the overall activity ratio during a one minute period shall be within the range of 23 % to 33 %. Any alternative signal shall be adjusted to give the same r.m.s. level over a one minute period as the level for the pseudo speech signal. |
09855bad8859a0dbf7a658d27e149576 | 101 149 | 3.1.2.2 Levels | nominal acoustic excitation: the application of an acoustic level of -4,7 dB Pa to the MRP (corresponding to -28,7 dBPa at the HFRP for handsfree measurements). peak to peak voltage: peak to peak voltage for the purpose of the present document is the difference between the maximum and minimum voltage during any 10 ms window. |
09855bad8859a0dbf7a658d27e149576 | 101 149 | 3.2 Abbreviations | For the purposes of the present document, the following abbreviations apply: e.m.f Electromotive Force HFRP HandsFree Reference Point ICP Installation Connection Point, branch side of a TCE ISDN Integrated Services Digital Network MRP Mouth Reference Point NTP Network Termination Point PBX Private Branch Exchange PCM Pulse Code Modulation PSTN Public Switched Telephone Network RLR Recieve Loudness Rating r.m.s Root Mean Square SLR Sending Loudness Rating TCP Terminal Connection Point TE Terminal Equipment, subscriber equipment 4 Background: Analysis of prTBR 37 requirements (TE with acoustic transducers) |
09855bad8859a0dbf7a658d27e149576 | 101 149 | 4.1 Mean sending level | The mean sending level is currently limited to -9,7 dBV. This limit shall not be exceeded when exciting the handset microphone with the pseudo speech signal set at the nominal level which is considered to be -4,7 dB Pa at the MRP. In order to assess the coherence of this requirement with the requirements of TBR 38 [6], reference can be made to the existing literature on telephone speech levels, and in particular to ITU-T Recommendation G.115 [1]. In this Recommendation the relationship between the output active speech level (L) and the SLR of a telephone set is provided: L (dBm) = -11 -SLR The application of this relationship to a TBR 38 [6] conforming telephone set gives the nominal output level of a telephone set having the maximum allowed sensitivity (SLR = -1 dB): Lmax = -11 - (-1) = -10 dBm = -12,2 dBV ETSI TR 101 149 V1.1.1 (1998-05) 8 In other words, by exciting a top limited TBR 38 [6] compliant telephone set at the nominal speech level (-4,7 dBPa), the generated active speech level is equal to -12,2 dBV. The excitation condition specified in prTBR 37 [5] is however not at the nominal active speech level, as the mean acoustic level of the pseudo speech signal is 5,6 dB less than the ON level of the signal (-4,7 dBPa). The expected output mean sending level is then: Lout = -12,2 -5,6 = -17,8 dBV NOTE: This desirable value is actually far below the specified limit (-9,7 dBV). While this discrepancy has no adverse consequences for: • ordinary linear handset where, being them considered a justified case, the output level specification is practically overruled by the SLR requirement of TBR 38 [6]; or • handsfree telephones, where producers normally follow handset telephony technical rules, it can result into too loud output signals where the speech output is electronically synthesized, depends on non-linear systems or is derived from electric or digital inputs of any kind. |
09855bad8859a0dbf7a658d27e149576 | 101 149 | 4.2 Instantaneous voltage 8 Vpp requirement (prTBR 37) | It is known (see ETR 250 [2]) that the standard deviation σ of the active speech level is equal to 5 dB (2σ = 10 dB). Besides, the peak factor of speech is of the order of 20 dB, but the signal can be clipped down to 12 dB with no practical prejudice for its perceived quality or loudness. A TBR 38 [6] maximum efficiency compliant terminal (SLR = -1 dB), when stimulated with a signal 10 dB stronger than the nominal level of -4,7 dBPa, is then expected to generate a maximum output active speech level of: Lmax = -12,2 + 10 = -2,2 dBV Its practical peak value is then: Lpeak = -2,2 + 12 = 9,8 dBV i.e.: Vpeak = 3 V or: Vp-p = 6 V This requirement compares well with the 8 Vp-p requirement of prTBR 37 [5]. The same TBR 38 [6] maximum efficiency compliant terminal (SLR = -1 dB), when tested with a 10 dBPa signal as specified by prTBR 37 [5] (14,7 dB stronger then the nominal level of -4,7 dBPa), is actually expected to generate a maximum output speech level of: Lmax = -12,2 + 14,7 = +2,5 dBV (ON periods of the output signal) Being the peak factor of the pink noise on which the pseudo speech signal (prTBR 37 [5] signal) is based (approximately 11 dB) the (theoretical) output peak value is then: Lpeak = 2,5 +11 = 13,5 dBV i.e.: Vpeak = 4,84 V or: Vp-p = 9,7 V The 8 V requirement of prTBR 37 [5] is then adequately tested by the test method there provided. ETSI TR 101 149 V1.1.1 (1998-05) 9 |
09855bad8859a0dbf7a658d27e149576 | 101 149 | 4.3 Instantaneous voltage 5 Vpp (TBRs 21 and 37) | This requirement is tested in prTBR 37 [5] with a 0 dBPa simulation. A TBR 38 [6] maximum efficiency compliant terminal (SLR = -1 dB), when stimulated with an 0 dBPa signal (4,7 dB stronger then the nominal level of -4,7 dBPa), is then expected to generate a maximum output speech level of: Lmax = -12,2 + 4,7 = -7,5 dBV (ON periods of the output signal) Being the crest factor of the pink noise on which the pseudo speech signal (prTBR 37 [5] signal) is based (approximately 11 dB) the expected peak value is then: Lpeak = -7,5 + 11 = 3,5 dBV i.e.: Vpeak = 1,5 Vp or: Vp-p = 3 Vpp Apparently this test has no particular interest, as a test with a 10 dBPa excitation is required (8 Vpp requirement). It seems nevertheless reasonable to perform this test because it corresponds to a more common simulation (users are not expected to produce 10 dBPa voice signals, it should therefore not be considered a normal use or very much on the limit of it) and a set being saturated in the 10 dBPa operating point might not be saturated in the 0 dBPa operating point, where unwanted peaks from spurious effects or too high efficiency might however occur. |
09855bad8859a0dbf7a658d27e149576 | 101 149 | 4.4 Conclusions | TE complying with TBR 38 [6] and considering the adopted prTBR 37 [5] measurement methodology: 1) Implicitly fulfil the mean sending level specified with a margin of 8 dB (-17,7 dBV expected, -9,7 dBV required). 2) Can be adequately tested with respect to the 8 Vpp requirement by the prTBR 37 [5] methodology. Besides: 3) The test of the 5 Vpp limitation with an 0 dBPa acoustic excitation ensures additionally that no harm occurs to the network. |
09855bad8859a0dbf7a658d27e149576 | 101 149 | 5 TE without acoustic transducers | Three classes of devices can be considered: 1) Devices electronically generating a speech signal, i.e. synthesizers (e.g. answering machines, E-Mail-telephony integration). 2) Devices delivering to line speech signals received from digital or analogue public network lines. 3) Devices delivering to line speech signals received from digital or analogue ICP interfaces. In all the above cases a speech signal is transmitted to line, but no acoustic excitation is locally implied for its generation. Of course all these cases shall be individually addressed in order to make sure that under no circumstances harm is caused to the network by the generated signals. In this clause, for each class of devices, suitable input signal levels are defined for testing the output level limitations by means of the pseudo speech signal (where applicable). ETSI TR 101 149 V1.1.1 (1998-05) 10 |
09855bad8859a0dbf7a658d27e149576 | 101 149 | 5.1 Synthesizers | This kind of TE does not need external voice stimuli. This case is covered by ITU-T Recommendation G115 [1], where it is recommended that the levels of signals electronically generated shall be harmonized with the level of speech signals generated by telephone sets in actual use in a given network. |
09855bad8859a0dbf7a658d27e149576 | 101 149 | 5.1.1 Mean sending level | If reference is made to TBR 38 [6] maxmum efficiency (SLR = -1 dB), then the Active Speech Level generated to the network shall not exceed -12,2 dBV (-11 + 1 -2,2), this level being measured as recommended by P.56, Method B of ITU-T Recommendation P.56 [3]. Any optimized application is then guaranteed to meet the -9,7 dBV requirement (referred to the speech mean level, integrated across a 10 sec time interval). A suitable advise should however be provided to manufacturers about the optimum setting of the output level. |
09855bad8859a0dbf7a658d27e149576 | 101 149 | 5.1.2 Instantaneous voltage 5 Vpp (TBR 21) | This kind of TE normally produce signals with a limited dynamic range. The 8 Vpp peak limitation requirement seems clearly overrated with respect to this TE. The requirement can be kept for guaranteeing the network protection against the occurrence of any spurious high level peaks. |
09855bad8859a0dbf7a658d27e149576 | 101 149 | 5.1.3 Conclusions | The requirements and measurement methods specified in TBR 21 [4] should normally be enough for such TEs. It seems nevertheless appropriate to provide suitable advice to manufacturers about the optimum setting of the output active speech level (-16,2 dBV). 5.2 Signals received from digital or analogue public network lines |
09855bad8859a0dbf7a658d27e149576 | 101 149 | 5.2.1 Mean sending level | In this case, the excitation is either electrical or digital from the telephone line TCP interface. The nominal excitation level is that expected when the signal is delivered by a calling telephone set complying with TBR 38 [6] (SLR = 3 dB). What matters in particular is the SLR of the telephone set, inclusive of the network, up to the input port of the remote terminal. Assuming an average 13 dB end-to-end network attenuation, then the resulting SLR is: Typical SLR = 3 + 13 = 16 dB The input average active speech level received under nominal conditions is then: Typical Lin = -11 -16 -2,2 = -29,2 dBV NOTE 1: The input average active speech level is measured according to ITU-T Recommendation P.56 [3], method B. It is recognized that the actual input level can exceed by about 10 dB the above calculated value in case of very short distance calls. In fact, assuming extreme worst case situations (TBR 38 [6] SLR = -1 and a "no-line" minimal end-to-end network attenuation of 8 dB), the resulting SLR is: Extreme SLR = -1 + 8 = 7 dB And, under these conditions, the input active speech level is: Extreme Lin = -11 -7 -2,2 = -20,2 dBV NOTE 2: This value is very close to the one used to measure RLR according to ITU-T recommendations (-12 dBVe.m.f). It is nevertheless to note that the pink noise on which the pseudo speech signal is based has a crest factor of approximately 11 dB (peaks are expected at -3 dBVe.m.f) while sinusoidal signals are normally used by ITU-T tests (peaks are expected at -9 dBVe.m.f). ETSI TR 101 149 V1.1.1 (1998-05) 11 The mean sending level requirement can, according to the above discussion, be tested by applying an active speech level of -14 dBVe.m.f for analogue TCPs. For digital TCPs similar calculations could be done and a -14,5 dBm0 level (-11 -3,5) corresponds to the condition described above for analogue interfaces. NOTE 3: 3,5 dB is the maximum sensitivity allowed for ISDN telephone sets (see TBR 8 [9]). |
09855bad8859a0dbf7a658d27e149576 | 101 149 | 5.2.2 Instantaneous voltage 8 Vpp (prTBR 37) | To follow the test principles adopted for the acoustic excitation of transducers, the instantaneous voltage requirement 8 Vpp should be tested with an input signal 15 dB stronger then the one used for testing the mean sending level requirement, i.e. +1 dBVe.m.f (active speech level). NOTE: This signal is expected to produce peaks of 1 dBVe.m.f + 2 +5 dB = 8 dBVp (5 dB = -6 dB for e.m.f to a-b conversion + 11 dB for the dynamic properties of the pink noise on which the pseudo speech signal is based) i.e. 2,5 Vp or 5 Vpp. For digital NTPs a 0,5 dBm0 active speech level (-14,5 + 15) shall be used. |
09855bad8859a0dbf7a658d27e149576 | 101 149 | 5.2.3 Instantaneous voltage 5 Vpp (TBRs 21 and 37) | To follow the test principles adopted for acoustic excitation of transducers, the instantaneous voltage requirement 5 Vpp should be tested with an input signal 5 dB stronger then the nominal active speech level, i.e. -9 dBVe.m.f (active speech level). NOTE: This signal is expected to produce peaks of -7 dBVe.m.f + 5 dB = -2 dBVp i.e. 0,8 Vp or 1,6 Vpp. For digital TCPs a -9,5 dBm0 active speech level shall be used. |
09855bad8859a0dbf7a658d27e149576 | 101 149 | 5.2.4 Conclusions | A pseudo speech signal can be used for the purposes of testing the kind of TE identified in this clause, provided that the active speech level presented at the TCP is: For the mean sending level requirement: For analogue interfaces -14 dBVe.m.f For digital interfaces -14,5 dBm0 For the 8 Vpp requirement: For analogue interfaces +1 dBVe.m.f For digital interfaces +0,5 dBm0 For the 5 Vpp requirement: For analogue interfaces -9 dBVe.m.f For digital interfaces -9,5 dBm0 |
09855bad8859a0dbf7a658d27e149576 | 101 149 | 5.3 Signals received from digital or analogue ICP interfaces | For digital interfaces, once there is normally no attenuation to be considered, the values suggested above for signals received from digital or analogue public network lines (subclause 5.2) should be considered as valid for this clause as well. NOTE: For terminal equipment (e.g. PBX) designed for connecting to their ICP interfaces telephone sets complying with proprietary (not harmonized) standards, the excitation levels are to be determined on the basis of a supplier declaration and according to the same criteria described in the present document. ETSI TR 101 149 V1.1.1 (1998-05) 12 |
09855bad8859a0dbf7a658d27e149576 | 101 149 | 5.3.1 Mean sending level | From the discussion presented in clause 4, it can be concluded that the maximum average active speech level generated by telephone sets complying with TBR 38 [6] (SLRmax = -1dB), when stimulated with the nominal acoustic input, is -12,2 dBV. It can then be concluded that the corresponding nominal value for the simulation of a standard analogue ICP interface would be -6 dBVe.m.f. |
09855bad8859a0dbf7a658d27e149576 | 101 149 | 5.3.2 Instantaneous voltage 8 Vpp (prTBR 37) | According to the above discussion, the requirement shall be tested with an input signal exceeding the signal used for the mean sending level test by 15 dB, for this test the value for the simulation of a standard analogue ICP would then be +9 dBVe.m.f. 5.3.3 Instantaneous voltage 5 Vpp (TBRs 21 and 37) According to the above discussion, the requirement shall be tested with an input signal exceeding the signal used for mean sending level test by 5 dB, for this test the value for the simulation of a standard analogue ICP would then be -1 dBVe.m.f. ETSI TR 101 149 V1.1.1 (1998-05) 13 |
09855bad8859a0dbf7a658d27e149576 | 101 149 | 5.3.4 Conclusions | The pseudo speech signal can be used for the purposes of testing the kind of TE identified in this clause, provided that the active speech level presented at the standard ICP is: For the mean sending level requirement: For analogue interfaces -6 dBVe.m.f For digital interfaces -14,5 dBm0 For the 8 Vpp requirement: For analogue interfaces +9 dBVe.m.f For digital interfaces +0,5 dBm0 For the 5 Vpp requirement: For analogue interfaces -1 dBVe.m.f For digital interfaces -9,5 dBm0 |
09855bad8859a0dbf7a658d27e149576 | 101 149 | 6 Final conclusions | The current requirement and test methods specified in prTBR 37 [5] can be applied to the whole range of voice terminal equipment by using the relevant knowledge of ITU recommendations on speech levels specification and measurement. The input active speech levels to be used for the different measurement scenarios are listed in the following. The assumption is made that the pseudo speech signal as specified in prTBR 37 [5] is used. For the reader’s convenience, both the active speech level and the setting level (i.e. the level of the ON periods of the signal) are given, the latter being reported within parentheses. As a reference for the reader, also the prTBR 37 [5] acoustic excitation levels are reported as well. The methodology here described to detail the test requirements in TBR 21 [4] for voice terminal equipment is also applicable in principle to the testing of voice terminals against TBR 15 [7] and TBR 17 [8] requirements. 6.1 Input signal level for the measurement of the mean sending level For analogue TCP: -14 dBVe.m.f (-12 dBVe.m.f ON) For digital interfaces (TCP or ICP or other): -14,5 dBm0 (-12,5 dBm0 ON) For analogue ICP: -6 dBVe.m.f (-4 dBVe.m.f ON) For the MRP of a handset or headset: -6,7 dBPa (-4,7 dBPa ON) For the HFRP of a handsfree TE: -30,7 dBPa (-28,7 dBPa ON) ETSI TR 101 149 V1.1.1 (1998-05) 14 6.2 Input signal level for the measurement of the Instantaneous voltage 8 Vpp requirement (prTBR 37, extreme loud signals) For analogue TCP: +1 dBVe.m.f (+3 dBVe.m.f ON) For digital interfaces (TCP or ICP or other): +0,5 dBm0 (+2,5 dBm0 ON) (see note) For analogue ICP: +9 dBVe.m.f (+11 dBVe.m.f ON) For the MRP of a handset or headset: +8 dBPa (+10 dBPa ON) For the HFRP of a handsfree TE: -16 dBPa (-14 dBPa ON) NOTE: This signal is known to saturate the dynamic range of the PCM coder and shall be set by increasing by 15 dB the level set for mean level testing. 6.3 Input signal level for the measurement of the Instantaneous voltage 5 Vpp requirement (TBRs 21 and 37, normal loud signals) For analogue TCP: -9 dBVe.m.f (-7 dBVe.m.f ON) For digital interfaces (TCP or ICP): -9,5 dBm0 (-7,5 dBm0 ON) For analogue ICP: -1 dBVe.m.f (+1 dBVe.m.f ON) For the MRP of a handset or headset: -2 dBPa (0 dBPa ON) For the HFRP of a handsfree TE: -26 dBPa (-24 dBPa ON) ETSI TR 101 149 V1.1.1 (1998-05) 15 History Document history V1.1.1 May 1998 Publication ISBN 2-7437-2195-2 Dépôt légal : Mai 1998 |
4973a5a36bbc86e0bfb7f4f2af97d779 | 101 182 | 1 Scope | The present document presents a list of the definitions, abbreviations and symbols used in the documents prepared by the ETSI Project Analogue Terminals and Access (ATA). The purpose of the present document is primarily to give guidance to ATA rapporteurs in the preparation of their documents, and to assist the usability of these documents through the use of consistent terminology. Furthermore it is intended to align, as far as possible, the definitions abbreviations and symbols with the corresponding ones from ITU and make them available within ETSI for other Technical Bodies, membership and clients. The definitions, abbreviations and symbols given are not intended to be exclusive. Other definitions, abbreviations and symbols different from those given here may be found in some ATA documents. However, the definitions given in the present document are generally to be preferred. The intended users of the present document include: Table 1: Intended users and potential benefits User TR used for Potential Benefit 1 ETSI Project ATA Provide guidance for ATA rapporteurs Improved quality of ATA documents through consistency and coherence of definitions, abbreviations and symbols 2 Other ETSI Technical Bodies Provide guidance on ATA terminology, and on how ATA interpret common terms Promote harmonized terminology within ETSI 3 User groups Provide guidance on ETSI Project ATA terminology Increased awareness in other interested parties of ATA terminology and its applications in documents |
4973a5a36bbc86e0bfb7f4f2af97d779 | 101 182 | 2 References | The following documents contain provisions which, through reference in this text, constitute provisions of the present document. • References are either specific (identified by date of publication, edition number, version number, etc.) or non-specific. • For a specific reference, subsequent revisions do not apply. • For a non-specific reference, the latest version applies. • A non-specific reference to an ETS shall also be taken to refer to later versions published as an EN with the same number. [1] ITU-T Recommendation P.10: "Vocabulary of terms on telephone transmission quality and telephone sets". [2] TR 101 183: "Public Switched Telephone Network (PSTN); Analogue ringing signals". [3] TBR 21: "Terminal Equipment (TE); Attachment requirements for pan-European approval for connection to the analogue Public Switched Telephone Networks (PSTNs) of TE (excluding TE supporting the voice telephony service) in which network addressing, if provided, is by means of Dual Tone Multi Frequency (DTMF) signalling". [4] TR 101 149: "2-wire analogue voice band interfaces; Terminal Equipment transmitting voice signals; Tes simulation for level limitation requirements". [5] EG 201 120: "Public Switched Telephone Network (PSTN); Method of rating terminal equipment so that it can be connected in series and/or in parallel to a Network Termination Point (NTP)". ETSI TR 101 182 V1.1.1 (1998-07) 6 [6] ITU-T Recommendation G.122: "Influence of national systems on stability and talker echo in international connections". [7] ITU-T Recommendation G.117: "Transmissions aspects of unbalance about earth". [8] ITU-T Recommendation P.340: "Transmission characteristics of hands-free telephones". [9] ITU-T Recommendation P.79: "Calculation of loudness ratings for telephone sets". [10] ITU-T Recommendation E.161: "Arrangement of digits, letters and symbols on telephones and other devices that can be used for gaining access to a telephone network". [11] ITU-T Recommendation Z.100: "CCITT specification and description language (SDL)". [12] ISO 31-0: "Quantities and units -- Part 0: General principles". [13] IEC 60050-722 (1993): "International Electrotechnical Vocabulary - Chapter 722: Telephony". [14] Council directive 90/387/EEC of 28 June 1990 on the establishment of the internal market for telecommunications services through the implementation of open network provision (ONP). [15] ITU-T Recommendation G.100: "Definitions used in Recommendations on general characteristics of international telephone connections and circuits". [16] Directive 98/13/EC of the European Parliament and of the Council of 12 February 1998 relating to telecommunications terminal equipment and satellite earth station equipment, including the mutual recognition of their conformity. |
4973a5a36bbc86e0bfb7f4f2af97d779 | 101 182 | 3 Definitions and abbreviations | |
4973a5a36bbc86e0bfb7f4f2af97d779 | 101 182 | 3.1 General definitions | acoustic shock: Any temporary or permanent disturbance of the functioning of the ear, or of the nervous system, which may be caused to the user of a telephone earphone by a sudden sharp rise in the acoustic pressure produced by it [ITU-T Recommendation P.10] NOTE 1: An acoustic shock usually results from the occurrence, in abnormal circumstances, of short-lived high voltages at the terminals of a telephone set. activity factor: Ratio of the active time to total timed elapsed during a measurement, usually expressed as a percentage [ITU-T Recommendation P.10] artificial ear: A device for the calibration of earphones incorporating an acoustic coupler and a calibrated microphone for the measurement of sound pressure and having an overall acoustic impedance similar to that of the average human ear over a given frequency band [ITU-T Recommendation P.10] Artificial mouth: A device consisting of a loudspeaker mounted in an enclosure and having a directivity and radiation pattern similar to those of the average human mouth [ITU-T Recommendation P.10] automatic repeat call attempts: An automatic repeat call attempt made by the TE to the same network address as the result of the failure of the previous call attempt and not as a result of an external stimulus to the TE [TBR 21] call attempt: The process by which the TE seizes the PSTN line and sends signalling characters of the network address with which the TE wishes to communicate [TBR 21] call completion busy subscriber: A supplementary service where if a call attempt fails due to the called party being busy, the network monitors the called party until it is available and then alerts the original caller [TR 101 183] call completion no reply: A supplementary service where if a call attempt fails due to the called party not answering, the network monitors the called party until it is available and then alerts the original caller [TR 101 183] ETSI TR 101 182 V1.1.1 (1998-07) 7 centrex out of group call: TEs on a centrex service alert using different ringing signals to indicate if the call has been originated from within or outside the centrex group [TR 101 183] crosstalk: The appearance of undesired energy in a channel, owing to the presence of a signal in another channel, caused by, for example induction, conduction or non linearity [IEC 60050-722] decadic signalling: See Loop Disconnect signalling (LD) distinctive ringing: Special ringing patterns sent by the network to convey information to the TE about the called number, the calling number or the status of an automatic call request [TR 101 183] echo return loss: Return loss averaged with 1/f power weighting over the frequency band 300 Hz to 3 400 Hz, in accordance with clause 4 of ITU-T Recommendation G.122 frequency band: A continuous set of frequencies lying between two specified limiting frequencies [IEC 60050-722] NOTE 2: A frequency band is characterized by two values which define its position in the frequency spectrum, for example, its lower and upper limiting frequencies. handset: A combination of telephone microphone and receiver in a form convenient for holding simultaneously to mouth and ear, which, when in use, retains the microphone in a position fixed in relation to the receiver [TBR 38] handset telephony: A function provided by terminal equipment whereby two-way real-time speech is supported by means of a handset that forms an integral part of the terminal equipment. The term "real-time speech" is also frequently used to describe "live speech" [TBR 38] handsfree function: A function whereby telephony transmission and reception is facilitated by the use of microphone(s) and loudspeaker(s) placed at a distance from the user. No handset is required to be used and normally the handset is not active [TBR 38] Hands-Free Reference Point (HFRP): A point located on the axis of the artificial mouth, at 50 cm from the lip ring, where the level calibration is made, in free field, as defined in ITU-T Recommendation P.340 subclause 5.3 Installation Connection Point (ICP): A point on a user installation, intended to accept the connection of a TE. See figure 1 NOTE 3: The ICP may also be part of a series connected TE. NOTE 4: The ICP may present to the TE physical characteristics identical to those of the NTP [EG 201 120]. Local exchange TE1 PSTN Network Termination Point (NTP) TE2 TE3 TE4 Installation Connection Point (ICP) ICP TCP Figure 1: Example of user's installation Loading Factor (LF): The portion of PSTN resources used by a TE or a set of TE (installation) when connected to a Network Termination Point (NTP) [EG 201 120] Longitudinal Conversion Loss (LCL): A measure of the degree of an balance about earth. More information is given in ITU-T Recommendation G.117, subclause 4.1.3 Loading Unit (LU): An arbitrary unit to measure (or evaluate) the Loading Factor [EG 201 120] Loop Disconnect signalling (LD): A signal sent in form of a sequence of identical pulses of a break in the loop current, the number of pulses corresponds to a specific digit to be transmitted. Loop Disconnect signalling is also known as Decadic signalling ETSI TR 101 182 V1.1.1 (1998-07) 8 loop state: The state where the TE draws sufficient DC current to activate the exchange. The Loop state is also known as the on-line state or the off-hook state [TBR 21] loop steady state: A loop state excluding the transitions from and to quiescent state [TBR 21] loudness rating: A measure, expressed in decibels, for characterizing the loudness performance of complete telephone connections or of parts thereof such as sending system, line, receiving system [ITU-T Recommendation P.10] loudspeaking function: A function of a handset telephone using a loudspeaker associated with an amplifier as a telephone receiver [TBR 38] Multi-Line Terminal Equipment (MLTE): A TE connected to the PSTN via two or more similar or different TCP´s Mouth Reference Point (MRP): A point 25 mm in front of and on the axis of the lip position of a typical human mouth (or artificial mouth) [ITU-T Recommendation P.10] multiple subscriber number: A supplementary service which provides the called NTP with a distinctive ringing signal or an enhanced signalling indication for each directory number associated with that NTP [TR 101 183] Network Termination Point (NTP): The physical point at the boundary of the telephone network intended to accept the connection of a TE. See figure 4 NOTE 5: Directive 90/387/EEC defines NTP as "All physical connections and their technical access specifications which form part of the public telecommunications network and are necessary for access to and efficient communications through that public network" [TBR 21]. normal ringing: The ringing pattern sent by a network to indicate normal delivery of an incoming call to the TE [TR 101 183] Output Signal Balance (OSB): A measure of the degree of an balance about earth. More information is given in ITU-T Recommendation G.117 subclause 4.3.1 peak to peak voltage: The difference between the maximum and minimum voltage during any specified time window pink noise (for the purpose of testing analogue voice-band interfaces or terminals): A test signal that has the following characteristics: - band limited to the frequency range 200 Hz to 3 800 Hz and; a) where analogue filters are used the slopes of the band limiting filter is at least 24 dB/ octave and the out-of-band attenuation is at least 25 dB (see figure 2). - the third octave spectrum of the electrically generated pink noise is equalized to within ± 1dB, while the acoustically generated pink noise is equalized (in free field) to within ± 3 dB. NOTE 6: When measured with 1/3 octave bandwidth at standard frequencies, an ideal filtered pink noise signal will be attenuated 1,1 dB at 200 Hz and 0,9 dB at 4 kHz compared to a non-filtered pink noise signal. b) where digital filters are used the details of a) above applies, but with the 3 dB attenuation points set at 225 Hz and 3 563 Hz instead of 200 Hz and 3 800 Hz [TR 101 149]. ETSI TR 101 182 V1.1.1 (1998-07) 9 200 Hz -3dB 3800 Hz 24 dB/Octave 24 dB/Octave 25 dB Figure 2: Response for band-limiting filter pseudo speech signal: A speech test signal with 11 cycles and then followed by a period of 5,6 seconds ± 20 ms OFF giving an activity ratio of approximately 28 % [TR 101 149] NOTE 7: The total OFF time after the 11th ON burst will be 5,75 seconds. NOTE 8: The timing tolerances given above will result in a tolerance for the r.m.s. level of ± 0,1 dB. public switched telephone network: The ordinary telephone system including subscriber lines, local exchanges and the complete system of trunks and the exchange hierarchy which makes up the network [TBR 21] quiescent state: The state where the TE draws insufficient DC current to activate the exchange. The Quiescent state is also known as the idle state, off-line state or the on-hook state [TBR 21] quiescent steady state: A quiescent state excluding the transitions from and to quiescent state reference impedance ZR: An impedance that is used as a common basis for the measurement of telecommunication parameters such as voltages and return loss NOTE 9: The current recommended reference impedance for use in ETSI standards for voice band measurements is: a complex impedance made up of 270 Ω in series with a parallel combination of 750 Ω and 150 nF. This is shown figure 3. 150nF 270 ohm 750 ohm Figure 3: ETSI voice-band reference impedance ZR Register Recall signal (RR): A signal sent from the TE to the telephone network during the communication phase of a call requesting the connection of a dialling detector release: The transition from loop to quiescent state. It includes the time slot from the end of loop steady state to the begin of quiescent steady state repeat call attempt: A further call attempt to the same network address resulting from a failure to establish connection during the previous call attempt [TBR 21] repeat call attempt sequence: A series of internally generated automatic repeat call attempts made in response to an initial call attempt NOTE 10:Additional, but separate, call requests are permitted to initiate separate repeat call attempt sequences, [TBR 21]. ETSI TR 101 182 V1.1.1 (1998-07) 10 return loss: Quantity characterizing the degree of match between two impedance’s, Z1 and Z2. It is given by the expression: L Z Z Z Z R = + − 20 10 1 2 1 2 log dB [ITU-T Recommendation G.100] ring pattern: One or more ringing pulses separated by short silent periods [TR 101 183] seize: The transition from quiescent to loop state. It includes the time slot from the end of quiescent steady state to the begin of loop steady state selective alerting: A supplementary service where a list of numbers is associated with a particular ringing cadence thereby giving the called party an indication of who the caller is [TR 101 183] series connected terminal equipment: A TE which provides an installation connection point intended to accept the connection of a second TE to be excited by loop current derived from the PSTN via the NTP, or from an external power source [EG 201 120]. SideTone Masking Rating (STMR): The loudness of a telephone sidetone path compared with the loudness of the intermediate reference system (IRS) overall in which the comparison is made incorporating the speech signal heard via the human sidetone path LMEHS as a masking threshold [ITU-T Recommendation P.10] NOTE 11:Further information about STMR can be found in ITU-T Recommendation P.79. speech test signal: A band-limited pink noise signal (see definition) that is continuously modulated to be ON for a period of 250 ms ± 5 ms and OFF for a period of 150 ms ± 5 ms [TR 101 149] Terminal Connection Point (TCP): The point of the TE intended to be connected to the PSTN. See figure 4 [TBR 21] Terminal Coupling Loss (TCL): The (frequency dependent) coupling loss between the receiving port and the sending port of a terminal due to : - acoustical coupling at the user interface; - electrical coupling due to crosstalk in the handset cord or within the electrical circuits; - seismic coupling through the mechanical parts of the terminal, (ITU-T Recommendation P.10). terminal equipment: Equipment intended to be connected to the public telecommunication network; i.e.: a) to be connected directly to the termination of a public telecommunication network; or b) to inter-work with a public telecommunication network being connected directly or indirectly to the termination of a public telecommunication network. In order to send, process or receive information. The system of connection may be wire, radio, optical or other electromagnetic system. NOTE 12:This definition is copied from the Directive 98/13/EC. timed break recall: See register recall twist: Level difference between different frequency components in a signal user installation: The means (cables and mechanical adaptors) used to connect between the NTP and one or more Installation Connection Points so as to permit one or more TE to access one NTP [EG 201 120] ETSI TR 101 182 V1.1.1 (1998-07) 11 Suitable adapter and/or installation facilities TE TCP NTP TBR 21 interface National interface PSTN Figure 4: Terminal connection point and Network Termination Point weighted Terminal Coupling Loss (TCLw): Terminal Coupling Loss using the weighting factors of ITU-T Recommendation G.122. |
4973a5a36bbc86e0bfb7f4f2af97d779 | 101 182 | 3.2 CLI related definitions | Dual Tone Alerting Signal (DT-AS): A specific combination of tones used as a TE Alerting Signal (TAS). idle line signalling state: The state into which the TE when connected to the network, is placed such that it is capable of receiving or sending speechband signalling without entering the loop state. on-line signalling state: On-line state of the TE when the TE is capable of receiving Frequency-Shift Keying (FSK) data, and the normal transmission functions are suspended. Ringing Pulse Alerting Signal (RP-AS): A single pulse of ringing current used as a TAS. TE Alerting Signal (TAS): A signal transmitted from the network to the TE to initiate a change in state of the TE from idle state to the idle line signalling state. |
4973a5a36bbc86e0bfb7f4f2af97d779 | 101 182 | 3.3 Abbreviations | a.c. alternating current ALASS Analogue Local Access Signalling Service AoC Advice on Charge CLI Calling Line Identity CLIP Calling Line Identification Presentation CLIR Calling Line Identification Restriction d.c. direct current DIT Data Information Transfer DT-AS Dual-Tone Alerting Signal DTMF Dual Tone Multi-Frequency EG ETSI Guide EMC ElectroMagnetic Compatibility emf electromotive force EN European Norm ERL Echo Return Loss ES ETSI Standard ETS European Telecommunication Standard ETSI European Telecommunications Standards Institute FCC Federal Communications Commission FSK Frequency-Shift Keying ICP Installation Connection Point IRA International Reference Alphabet ISDN Integrated Services Digital Network ITU-T International Telecommunications Union-Telecommunications sector LCL Longitudinal Conversion Loss LD Loop Disconnect signalling ETSI TR 101 182 V1.1.1 (1998-07) 12 LE Local Exchange LF Loading Factor LRGP Loudness Rating Guard-ring Position LU Loading Unit MLTE Multi line TE MRP Mouth Reference Point NTP Network Termination Point OSB Output Signal Balance PABX Private Automatic Branch Exchange PN Public Network PSTN Public Switched Telephone Network PTO Public Telecommunications Operator RL Return Loss RLR Receiving Loudness Rating r.m.s. root mean square RP-AS Ringing Pulse Alerting Signal SAS Subscriber Alerting Signal SLR Sending Loudness Rating STMR SideTone Masking Rating TAS TE-Alerting Signal TCP Terminal Connection Point TBR Technical Basis for Regulation TBR-RT TBR Requirements Table TE Terminal Equipment TE-ACK TE Acknowledgement Signal Vpp Peak to Peak voltage |
4973a5a36bbc86e0bfb7f4f2af97d779 | 101 182 | 4 Symbols | For the purposes of the present document, the following symbols apply: ∗ The Star on the standard 3x4 keypad array, see ITU-T Recommendation E.161. Also known as the asterisk. # The Square on the standard 3x4 keypad array, see ITU-T Recommendation E.161. Also known as the hash, sharp, or number sign ("pound" in the USA). Ω Ohm, the symbol for resistance. dBm Absolute power level expressed in decibels relative to 1 mW. dBV Absolute voltage level expressed in decibels relative to 1 volt. Within ATA's documents the symbols used within Specification and Description Language (SDL) figures or diagrams are defined in ITU-T Recommendation Z.100. In ATA's documents, similarly to other ETSI documents, the symbols and abbreviations defined by ISO 31-0 for units in the international system of units and measures, SI, are used. They are therefore not included in the above list. |
4973a5a36bbc86e0bfb7f4f2af97d779 | 101 182 | 5 Keywords | The following keywords are taken from the ETSI master list of currently available keywords. Keyword Explanatory text 2-WIRE - 3,1 kHz 3,1 kHz audio ACCESS - ACOUSTIC cf. coupling, etc ANALOGUE - AUDIO - ETSI TR 101 182 V1.1.1 (1998-07) 13 BASIC cf. Call, Service, Access, etc. CHARACTER Characters, symbols, graphics, pictograms CLIP Calling Line Identification Presentation (supp. service) CLIR Calling Line Identification Restriction (supp. service) CNIP Calling Name Identification Presentation (supp. service) CNIR Calling/Connected Name Identification Restriction (supp. service) CNOP Connected Name Identification Presentation (supp. service) COLP COnnected Line identification Presentation (supp. service) COLR COnnected Line identification Restriction (supp. service) CONF Conference (supplementary service) CONFIDENTIALITY (security) CONFIGURATION - CONNECTOR - CT Cordless Telephone CTS Conformance Test Services FAX Facsimile HANDSFREE (voice terminal operation) HOLD (service) INBAND In band (signalling) INTERFACE - INTERWORKING (between networks, between equipment in general) IPR Intellectual Property Right ISDN Integrated Services Digital Network LOUDNESS (rating) LOUDSPEAKING (voice terminal) MODEM MOdulator/DEModulator NETWORK - NOISE - OUTBAND Out of band (signalling) PABX Private Automatic Branch Exchange PERFORMANCE (inc. Quality of Service) PRIVATE (network) PROTOCOL - PSTN Public Switched Telephone Network SERVICE - SPEECH - SUBSCRIBER - SUPPLEMENTARY S Supplementary service (also supp. service or ss.) TELEPHONY - TELESERVICE - TERMINAL (as opposed to NETWORK) TEXT - TONE Information tones on voice terminals/network TRANSMISSION - TYPE APPROVAL (regulation) VOCABULARY Vocabulary, jargon, technical terms, etc VOICE Voice band (300 Hz to 3,4 kHz) (Cf SPEECH) ETSI TR 101 182 V1.1.1 (1998-07) 14 History Document history V1.1.1 July 1998 Publication ISBN 2-7437-2396-3 Dépôt légal : Juillet 1998 |
5be8745fbd6c3768de450df8cbe68990 | 101 178 | 1 Scope | The present document provides a high level description of the various components of the Digital Enhanced Cordless Telecommunications (DECT) standardization. It is directed to a wide audience, regulators, operators, manufacturers and others, and attempts to provide a basic overview of the DECT standards, without requiring detailed technical knowledge of DECT as a prerequisite. The present document describes the services and applications for which DECT may be used, and which ETSI publications relate to the different applications. The documents relating to conformance testing and regulation of DECT products are also described. |
5be8745fbd6c3768de450df8cbe68990 | 101 178 | 2 References | For the purposes of this Technical Report (TR) the following references apply: [1] ETSI EN 300 175-1: "Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI); Part 1: Overview". [2] ETSI EN 300 175-2: "Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI); Part 2: Physical Layer (PHL)". [3] ETSI EN 300 175-3: "Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI); Part 3: Medium Access Control (MAC) layer". [4] ETSI EN 300 175-4: "Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI); Part 4: Data Link Control (DLC) layer". [5] ETSI EN 300 175-5: "Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI); Part 5: Network (NWK) layer". [6] ETSI EN 300 175-6: "Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI); Part 6: Identities and addressing". [7] ETSI EN 300 175-7: "Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI); Part 7: Security features". [8] ETSI EN 300 175-8: "Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI); Part 8: Speech coding and transmission". [9] ETSI EN 300 052-1: "Integrated Services Digital Network (ISDN); Multiple Subscriber Number (MSN) supplementary service; Digital Subscriber Signalling System No. one (DSS1) protocol; Part 1: Protocol specification". [10] ETSI EN 300 052-2: "Integrated Services Digital Network (ISDN); Multiple Subscriber Number (MSN) supplementary service; Digital Subscriber Signalling System No. one (DSS1) protocol; Part 2: Protocol Implementation Conformance Statement (PICS) proforma specification". [11] ETSI EN 300 052-3: "Integrated Services Digital Network (ISDN); Multiple Subscriber Number (MSN) supplementary service; Digital Subscriber Signalling System No. one (DSS1) protocol; Part 3: Test Suite Structure and Test Purposes (TSS&TP) specification for the user". [12] ETSI EN 300 052-4: "Integrated Services Digital Network (ISDN); Digital Subscriber Signalling System No. one (DSS1) protocol; Multi Subscriber Number (MSN) supplementary service; Part 4: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for the user". [13] ETSI EN 300 052-5: "Integrated Services Digital Network (ISDN); Multiple Subscriber Number (MSN) supplementary service; Digital Subscriber Signalling System No. one (DSS1) protocol; Part 5: Test Suite Structure and Test Purposes (TSS&TP) specification for the network". ETSI ETSI TR 101 178 V1.5.1 (2005-02) 8 [14] ETSI EN 300 052-6: "Integrated Services Digital Network (ISDN); Multiple Subscriber Number (MSN) supplementary service; Digital Subscriber Signalling System No. one (DSS1) protocol; Part 6: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for the network". [15] ETSI EN 300 176-1: "Digital Enhanced Cordless Telecommunications (DECT); Test specification; Part 1: Radio". [16] ETSI EN 300 176-2: "Digital Enhanced Cordless Telecommunications (DECT); Test specification; Part 2: Speech". [17] ETSI ETS 300 329: "Radio Equipment and Systems (RES); ElectroMagnetic Compatibility (EMC) for Digital Enhanced Cordless Telecommunications (DECT) equipment". [18] ETSI ETS 300 331: "Digital Enhanced Cordless Telecommunications (DECT); DECT Authentication Module (DAM)". [19] ETSI EN 300 339: "Electromagnetic compatibility and Radio spectrum Matters (ERM); General ElectroMagnetic Compatibility (EMC) for radio communications equipment". [20] ETSI EN 300 370: "Digital Enhanced Cordless Telecommunications (DECT); Global System for Mobile communications (GSM); DECT/GSM Interworking Profile (IWP); Access and mapping (protocol/procedure description for 3,1 kHz speech service)". [21] ETSI ETS 300 406: "Methods for Testing and Specification (MTS); Protocol and profile conformance testing specifications; Standardization methodology". [22] ETSI EN 300 434-1: "Digital Enhanced Cordless Telecommunications (DECT); Integrated Services Digital Network (ISDN); DECT/ISDN interworking for end system configuration; Part 1: Interworking specification". [23] ETSI EN 300 434-2: "Digital Enhanced Cordless Telecommunications (DECT); Integrated Services Digital Network (ISDN); DECT/ISDN interworking for end system configuration; Part 2: Access profile". [24] ETSI EN 300 444: "Digital Enhanced Cordless Telecommunications (DECT); Generic Access Profile (GAP)". [25] ETSI EN 300 466: "Digital Enhanced Cordless Telecommunications (DECT); Global System for Mobile communications (GSM); DECT/GSM Interworking Profile (IWP); General description of service requirements; Functional capabilities and information flows". [26] ETSI EN 300 474-1: "Digital Enhanced Cordless Telecommunications (DECT); Generic Access Profile (GAP); Profile requirement list and profile specific Implementation Conformance Statement (ICS) proforma; Part 1: Portable radio Termination (PT)". [27] ETSI EN 300 474-2: "Digital Enhanced Cordless Telecommunications (DECT); Generic Access Profile (GAP); Profile requirement list and profile specific Implementation Conformance Statement (ICS) proforma; Part 2: Fixed radio Termination (FT)". [28] ETSI EN 300 476-1: "Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI); Protocol Implementation Conformance Statement (PICS) proforma; Part 1: Network (NWK) layer - Portable radio Termination (PT)". [29] ETSI EN 300 476-2: "Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI); Protocol Implementation Conformance Statement (PICS) proforma; Part 2: Data Link Control (DLC) layer - Portable radio Termination (PT)". [30] ETSI EN 300 476-3: "Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI); Protocol Implementation Conformance Statement (PICS) proforma; Part 3: Medium Access Control (MAC) layer - Portable radio Termination (PT)". [31] ETSI EN 300 476-4: "Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI); Protocol Implementation Conformance Statement (PICS) proforma; Part 4: Network (NWK) layer - Fixed radio Termination (FT)". ETSI ETSI TR 101 178 V1.5.1 (2005-02) 9 [32] ETSI EN 300 476-5: "Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI); Protocol Implementation Conformance Statement (PICS) proforma; Part 5: Data Link Control (DLC) layer - Fixed radio Termination (FT)". [33] ETSI EN 300 476-6: "Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI); Protocol Implementation Conformance Statement (PICS) proforma; Part 6: Medium Access Control (MAC) layer - Fixed radio Termination (FT)". [34] ETSI EN 300 476-7: "Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI); Protocol Implementation Conformance Statement (PICS) proforma; Part 7: Physical layer". [35] ETSI EN 300 494-1: "Digital Enhanced Cordless Telecommunications (DECT); Generic Access Profile (GAP); Profile Test Specification (PTS); Part 1: Summary". [36] ETSI EN 300 494-2: "Digital Enhanced Cordless Telecommunications (DECT); Generic Access Profile (GAP); Profile Test Specification (PTS); Part 2: Profile Specific Test Specification (PSTS) - Portable radio Termination (PT)". [37] ETSI EN 300 494-3: "Digital Enhanced Cordless Telecommunications (DECT); Generic Access Profile (GAP); Profile Test Specification (PTS); Part 3: Profile Specific Test Specification (PSTS) - Fixed radio Termination (FT)". [38] ETSI EN 300 497-1: "Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI); Test Case Library (TCL); Part 1: Test Suite Structure (TSS) and Test Purposes (TP) for Medium Access Control (MAC) layer". [39] ETSI EN 300 497-2: "Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI); Test Case Library (TCL); Part 2: Abstract Test Suite (ATS) for Medium Access Control (MAC) layer - Portable radio Termination (PT)". [40] ETSI EN 300 497-3: "Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI); Test Case Library (TCL); Part 3: Abstract Test Suite (ATS) for Medium Access Control (MAC) layer - Fixed radio Termination (FT)". [41] ETSI EN 300 497-4: "Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI); Test Case Library (TCL); Part 4: Test Suite Structure (TSS) and Test Purposes (TP) - Data Link Control (DLC) layer". [42] ETSI EN 300 497-5: "Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI); Test Case Library (TCL); Part 5: Abstract Test Suite (ATS) - Data Link Control (DLC) layer". [43] ETSI EN 300 497-6: "Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI); Test Case Library (TCL); Part 6: Test Suite Structure (TSS) and Test Purposes (TP) - Network (NWK) layer - Portable radio Termination (PT)". [44] ETSI EN 300 497-7: "Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI); Test Case Library (TCL); Part 7: Abstract Test Suite (ATS) for Network (NWK) layer - Portable radio Termination (PT)". [45] ETSI EN 300 497-8: "Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI); Test Case Library (TCL); Part 8: Test Suite Structure (TSS) and Test Purposes (TP) - Network (NWK) layer - Fixed radio Termination (FT)". [46] ETSI EN 300 497-9: "Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI); Test Case Library (TCL); Part 9: Abstract Test Suite (ATS) for Network (NWK) layer - Fixed radio Termination (FT)". [47] ETSI ETS 300 499: "Digital Enhanced Cordless Telecommunications (DECT); Global System for Mobile communications (GSM); DECT/GSM Interworking Profile (IWP); Mobile services Switching Centre (MSC) - Fixed Part (FP) interconnection". ETSI ETSI TR 101 178 V1.5.1 (2005-02) 10 [48] ETSI ETS 300 702-1: "Digital Enhanced Cordless Telecommunications (DECT); Global System for Mobile communications (GSM); DECT/GSM Interworking Profile (IWP); Part 1: Profile Test Specification (PTS) summary". [49] ETSI ETS 300 702-2: "Digital Enhanced Cordless Telecommunications (DECT); Global System for Mobile communications (GSM); DECT/GSM Interworking Profile (IWP); Profile Test Specification (PTS); Profile Specific Test Specification (PSTS); Part 2: Portable radio Termination (PT)". [50] ETSI ETS 300 702-3: "Digital Enhanced Cordless Telecommunications (DECT); Global System for Mobile communications (GSM); DECT/GSM Interworking Profile (IWP); Profile Test Specification (PTS); Profile Specific Test Specification (PSTS); Part 3: Fixed radio Termination (FT)". [51] ETSI EN 300 703: "Digital Enhanced Cordless Telecommunications (DECT); Global System for Mobile communications (GSM); DECT/GSM Interworking Profile (IWP); GSM Phase 2 supplementary services implementation". [52] ETSI ETS 300 704-1: "Digital Enhanced Cordless Telecommunications (DECT); Global System for Mobile communications (GSM); DECT/GSM Interworking Profile (IWP); Profile Implementation Conformance Statement (ICS); Part 1: Portable radio Termination (PT)". [53] ETSI ETS 300 704-2: "Digital Enhanced Cordless Telecommunications (DECT); Global System for Mobile communications (GSM); DECT/GSM Interworking Profile (IWP); Profile Implementation Conformance Statement (ICS); Part 2: Fixed radio Termination (FT)". [54] ETSI ETS 300 705-1: "Digital Enhanced Cordless Telecommunications (DECT); Integrated Services Digital Network (ISDN); DECT/ISDN interworking for end system configuration; Profile Implementation Conformance Statement (ICS); Part 1: Portable radio Termination (PT)". [55] ETSI ETS 300 705-2: "Digital Enhanced Cordless Telecommunications (DECT); Integrated Services Digital Network (ISDN); DECT/ISDN interworking for end system configuration; Profile Implementation Conformance Statement (ICS); Part 2: Fixed radio Termination (FT)". [56] ETSI ETS 300 756: "Digital Enhanced Cordless Telecommunications (DECT); Global System for Mobile communications (GSM); DECT/GSM Interworking Profile (IWP); Implementation of bearer services". [57] ETSI EN 300 757: "Digital Enhanced Cordless Telecommunications (DECT); Low Rate Messaging Service (LRMS) including Short Messaging Service (SMS)". [58] ETSI ETS 300 758-1: "Digital Enhanced Cordless Telecommunications (DECT); Integrated Services Digital Network (ISDN); DECT/ISDN interworking for end system configuration; Profile Test Specification (PTS); Part 1: Summary". [59] ETSI ETS 300 758-2: "Digital Enhanced Cordless Telecommunications (DECT); Integrated Services Digital Network (ISDN); DECT/ISDN interworking for end system configuration; Profile Test Specification (PTS); Part 2: Profile Specific Test Specification (PSTS) for Portable radio Termination (PT)". [60] ETSI ETS 300 758-3: "Digital Enhanced Cordless Telecommunications (DECT); Integrated Services Digital Network (ISDN); DECT/ISDN interworking for end system configuration; Profile Test Specification (PTS); Part 3: Profile Specific Test Specification (PSTS) for Fixed radio Termination (FT)". [61] ETSI ETS 300 759: "Digital Enhanced Cordless Telecommunications (DECT); DECT Authentication Module (DAM); Test specification for DAM". [62] ETSI ETS 300 760: "Digital Enhanced Cordless Telecommunications (DECT); DECT Authentication Module (DAM); Implementation Conformance Statement (ICS) proforma specification". [63] ETSI ETS 300 764: "Digital Enhanced Cordless Telecommunications (DECT); Global System for Mobile communications (GSM); DECT/GSM Interworking Profile (IWP); Implementation of short message service, point-to-point and cell broadcast". ETSI ETSI TR 101 178 V1.5.1 (2005-02) 11 [64] ETSI EN 300 765-1: "Digital Enhanced Cordless Telecommunications (DECT); Radio in the Local Loop (RLL) Access Profile (RAP); Part 1: Basic telephony services". [65] ETSI EN 300 765-2: "Digital Enhanced Cordless Telecommunications (DECT); Radio in the Local Loop (RLL) Access Profile (RAP); Part 2: Advanced telephony services". [66] ETSI ETS 300 787: "Digital Enhanced Cordless Telecommunications (DECT); Global System for Mobile communications (GSM); Integrated Services Digital Network (ISDN); DECT access to GSM via ISDN; General description of service requirements". [67] ETSI ETS 300 788: "Digital Enhanced Cordless Telecommunications (DECT); Global System for Mobile communications (GSM); Integrated Services Digital Network (ISDN); DECT access to GSM via ISDN; Functional capabilities and information flows". [68] ETSI ETS 300 792: "Digital Enhanced Cordless Telecommunications (DECT); Global System for Mobile communications (GSM); DECT/GSM Interworking Profile (IWP); Implementation of facsimile group 3". [69] ETSI EN 300 822: "Digital Enhanced Cordless Telecommunications (DECT); Integrated Services Digital Network (ISDN); DECT/ISDN interworking for intermediate system configuration; Interworking and profile specification". [70] ETSI EN 300 824: "Digital Enhanced Cordless Telecommunications (DECT); Cordless Terminal Mobility (CTM); CTM Access Profile (CAP)". [71] ETSI ETS 300 825: "Digital Enhanced Cordless Telecommunications (DECT); 3 Volt DECT Authentication Module (DAM)". [72] ETSI EN 301 238: "Digital Enhanced Cordless Telecommunications (DECT); Data Services Profile (DSP); Isochronous data bearer services with roaming mobility (service type D, mobility class 2)". [73] ETSI EN 301 239: "Digital Enhanced Cordless Telecommunications (DECT); Data Services Profile (DSP); Isochronous data bearer services for closed user groups (service type D, mobility class 1)". [74] ETSI EN 301 241-1: "Digital Enhanced Cordless Telecommunications (DECT); Integrated Services Digital Network (ISDN); DECT/ISDN interworking for intermediate system configuration; Profile Implementation Conformance Statement (ICS); Part 1: Portable radio Termination (PT)". [75] ETSI EN 301 241-2: "Digital Enhanced Cordless Telecommunications (DECT); Integrated Services Digital Network (ISDN); DECT/ISDN interworking for intermediate system configuration; Profile Implementation Conformance Statement (ICS); Part 2: Fixed radio Termination (FT)". [76] ETSI EN 301 242: "Digital Enhanced Cordless Telecommunications (DECT); Global System for Mobile communications (GSM); DECT/GSM integration based on dual-mode terminals". [77] ETSI EN 301 361-1: "Digital Enhanced Cordless Telecommunications (DECT); Integrated Services Digital Network (ISDN); ISDN Mobility protocol Interworking specification Profile (IMIP); Part 1: DECT/ISDN interworking for Cordless Terminal Mobility (CTM) support". [78] ETSI EN 301 361-2: "Digital Enhanced Cordless Telecommunications (DECT); Integrated Services Digital Network (ISDN); ISDN Mobility protocol Interworking specification Profile (IMIP); Part 2: DECT/ISDN interworking for Global System for Mobile communications (GSM) support". [79] ETSI EN 301 371-1: "Digital Enhanced Cordless Telecommunications (DECT); Cordless Terminal Mobility (CTM); CTM Access Profile (CAP); Profile Test Specification (PTS); Part 1: Summary". [80] ETSI EN 301 371-2: "Digital Enhanced Cordless Telecommunications (DECT); Cordless Terminal Mobility (CTM); CTM Access Profile (CAP); Profile Test Specification (PTS); Part 2: Profile Specific Test Specification (PSTS) -Portable radio Termination (PT)". ETSI ETSI TR 101 178 V1.5.1 (2005-02) 12 [81] ETSI EN 301 371-3: "Digital Enhanced Cordless Telecommunications (DECT); Cordless Terminal Mobility (CTM); CTM Access Profile (CAP); Profile Test Specification (PTS); Part 3: Profile Specific Test Specification (PSTS) -Fixed radio Termination (FT)". [82] ETSI EN 301 439: "Digital Enhanced Cordless Telecommunications (DECT); Global System for Mobile communications (GSM); Attachment requirements for DECT/GSM dual-mode terminal equipment". [83] ETSI EN 301 440: "Digital Enhanced Cordless Telecommunications (DECT); Integrated Services Digital Network (ISDN); Attachment requirements for terminal equipment for DECT/ISDN interworking profile applications". [84] ETSI EN 301 614-1: "Digital Enhanced Cordless Telecommunications (DECT); Integrated Services Digital Network (ISDN); DECT/ISDN interworking for intermediate system configuration; Part 1: Profile Test Specification (PTS) summary". [85] ETSI EN 301 614-2: "Digital Enhanced Cordless Telecommunications (DECT); Integrated Services Digital Network (ISDN); DECT/ISDN interworking for intermediate system configuration; Part 2: Profile Specific Test Specification (PSTS) for Portable radio Termination (PT)". [86] ETSI EN 301 614-3: "Digital Enhanced Cordless Telecommunications (DECT); Integrated Services Digital Network (ISDN); DECT/ISDN interworking for intermediate system configuration; Part 3: Profile Specific Test Specification (PSTS) for Fixed radio Termination (FT)". [87] ETSI EN 301 649: "Digital Enhanced Cordless Telecommunications (DECT); DECT Packet Radio Service (DPRS)". [88] ETSI EN 301 650: "Digital Enhanced Cordless Telecommunications (DECT); DECT Multimedia Access Profile (DMAP) Application Specific Access Profile (ASAP)". [89] ETSI ETR 041: "Transmission and Multiplexing (TM); Digital European Cordless Telecommunications (DECT); Transmission aspects 3,1 kHz telephony Interworking with other networks". [90] ETSI ETR 043: "Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI); Services and facilities requirements specification". [91] ETSI ETR 056: "Digital Enhanced Cordless Telecommunications (DECT); System description document". [92] ETSI ETR 139: "Radio Equipment and Systems (RES); Radio in the Local Loop (RLL)". [93] ETSI ETR 159: "Digital Enhanced Cordless Telecommunications (DECT); Global System for Mobile communications (GSM); Wide area mobility using GSM". [94] ETSI TR 102 183: "Digital Enhanced Cordless Telecommunications (DECT); Conformance testing on DECT equipment". [95] ETSI TR 102 185: "Digital Enhanced Cordless Telecommunications (DECT); Data Services Profile (DSP); Profile overview". [96] ETSI ETR 246: "Digital Enhanced Cordless Telecommunications (DECT); Application of DECT Wireless Relay Stations (WRS)". [97] ETSI ETR 308: "Digital Enhanced Cordless Telecommunications (DECT); Services, facilities and configurations for DECT in the local loop". [98] ETSI ETR 341: "Digital Enhanced Cordless Telecommunications (DECT); Global System for Mobile communications (GSM); DECT/GSM Interworking Profile (IWP); Profile overview". [99] ETSI TR 101 072: "Digital Enhanced Cordless Telecommunications (DECT); Global System for Mobile communications (GSM); DECT/GSM integration based on dual-mode terminals". ETSI ETSI TR 101 178 V1.5.1 (2005-02) 13 [100] ETSI TR 101 159: "Digital Enhanced Cordless Telecommunications (DECT); Implementing DECT in an arbitrary spectrum allocation". [101] ETSI TR 101 310: "Digital Enhanced Cordless Telecommunications (DECT); Traffic capacity and spectrum requirements for multi-system and multi-service DECT applications co-existing in a common frequency band". [102] ETSI TR 101 370: "Digital Enhanced Cordless Telecommunications (DECT); Implementing DECT Fixed Wireless Access (FWA) in an arbitrary spectrum allocation". [103] Council Directive 89/336/EEC of 3 May 1989 on the approximation of the laws of the Member States relating to electromagnetic compatibility (Official Journal L139 of 23/5/89 including 92/31/EEC). [104] Council Directive 91/287/EEC of 3 June 1991 on the frequency band to be designated for the coordinated introduction of digital European cordless telecommunications (DECT) into the Community. [105] Council Recommendation 91/288/EEC of 3 June 1991 on the coordinated introduction of digital European cordless telecommunications (DECT) into the Community. [106] ITU-T Recommendation G.726: "40, 32, 24, 16 kbit/s adaptive differential pulse code modulation (ADPCM)". [107] TRAC Handbook: "Handbook on CTRs". [108] TRAC Procedure: "Procedure for the Production of CTRs". [109] ISO/IEC 9646: "Information technology - Open Systems Interconnection - Conformance testing methodology and framework". [110] ETSI EN 302 096: "Digital Enhanced Cordless Telecommunications (DECT); Cordless Terminal Mobility (CTM); Feature Package 1 (FP1); CTM circuit-switched data profile, 32 kbit/s and 64 kbit/s Unrestricted Digital Information (UDI)". [111] ETSI EN 300 700: "Digital Enhanced Cordless Telecommunications (DECT); Wireless Relay Station (WRS)". [112] IEEE 802.3: "Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier Sense Multiple Access with Collision Detection (CSMA/CD) Access Method and Physical Layer Specifications". [113] IEEE 802.5: "Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 5: Token Ring Access Method and Physical Layer Specifications". [114] ETSI TS 101 679: "Digital Enhanced Cordless Telecommunications (DECT); Broadband Integrated Services Digital Network (B-ISDN); DECT/B-ISDN interworking". [115] ETSI TBR 036: "Digital Enhanced Cordless Telecommunications (DECT); Global System for Mobile communications (GSM); DECT access to GSM Public Land Mobile Networks (PLMNs) for 3,1 kHz speech applications". [116] ETSI TR 101 176: "Digital Enhanced Cordless Telecommunications (DECT); Global System for Mobile communications (GSM); DECT/GSM advanced integration of DECT/GSM dual-mode terminal equipment". [117] ETSI ETR 337: "Broadband Integrated Services Digital Network (B-ISDN); Mobile networks requirements on B-ISDN". [118] ETSI EN 301 469-1: "Digital Enhanced Cordless Telecommunications (DECT); DECT Packet Radio Service (DPRS) Test Case Library (TCL); Part 1: Test Suite Structure (TSS) and Test Purposes (TP) - Medium Access Control (MAC) layer". ETSI ETSI TR 101 178 V1.5.1 (2005-02) 14 [119] ETSI EN 301 469-2: "Digital Enhanced Cordless Telecommunications (DECT); DECT Packet Radio Service (DPRS) Test Case Library (TCL); Part 2: Abstract Test Suite (ATS) - Medium Access Control (MAC) layer - Portable radio Termination (PT)". [120] ETSI EN 301 469-3: "Digital Enhanced Cordless Telecommunications (DECT); DECT Packet Radio Service (DPRS) Test Case Library (TCL); Part 3: Abstract Test Suite (ATS) - Medium Access Control (MAC) layer - Fixed radio Termination (FT)". [121] ETSI EN 301 469-4: "Digital Enhanced Cordless Telecommunications (DECT); DECT Packet Radio Service (DPRS) Test Case Library (TCL); Part 4: Test Suite Structure (TSS) and Test Purposes (TP) - Data Link Control (DLC) layer". [122] ETSI EN 301 469-5: "Digital Enhanced Cordless Telecommunications (DECT); DECT Packet Radio Service (DPRS) Test Case Library (TCL); Part 5: Abstract Test Suite (ATS) - Data Link Control (DLC) layer - Portable radio Termination (PT)". [123] ETSI EN 301 469-6: "Digital Enhanced Cordless Telecommunications (DECT); DECT Packet Radio Service (DPRS) Test Case Library (TCL); Part 6: Abstract Test Suite (ATS) - Data Link Control (DLC) layer - Fixed radio Termination (FT)". [124] ETSI EN 301 469-7: "Digital Enhanced Cordless Telecommunications (DECT); DECT Packet Radio Service (DPRS) Test Case Library (TCL); Part 7: Test Suite Structure (TSS) and Test Purposes (TP) - Network (NWK) layer". [125] ETSI EN 301 469-8: "Digital Enhanced Cordless Telecommunications (DECT); DECT Packet Radio Service (DPRS) Test Case Library (TCL); Part 8: Abstract Test Suite (ATS) - Network (NWK) layer - Portable radio Termination (PT)". [126] ETSI EN 301 469-9: "Digital Enhanced Cordless Telecommunications (DECT); DECT Packet Radio Service (DPRS) Test Case Library (TCL); Part 9: Abstract Test Suite (ATS) - Network (NWK) layer - Fixed radio Termination (FT)". [127] Council Directive 91/263/EEC of 29 April 1991 on the approximation of the laws of the Member States concerning telecommunications terminal equipment, including the mutual recognition of their conformity. [128] ETSI TS 101 869-1: "Digital Enhanced Cordless Telecommunications (DECT); DECT Packet Radio Services (DPRS); Profile requirement list and profile specific Implementation Conformance Statement (ICS) proforma; Part 1: Portable radio Termination (PT)". [129] ETSI TS 101 869-2: "Digital Enhanced Cordless Telecommunications (DECT); DECT Packet Radio Services (DPRS); Profile requirement list and profile specific Implementation Conformance Statement (ICS) proforma; Part 2: Fixed radio Termination (FT)". [130] ETSI TS 101 871-1: "Digital Enhanced Cordless Telecommunications (DECT); Application Specific Access Profile (ASAP); DECT Multimedia Access Profile (DMAP); Profile requirement list and profile specific Implementation Conformance Statement (ICS) proforma; Part 1: Portable radio Termination (PT)". [131] ETSI TS 101 871-2: "Digital Enhanced Cordless Telecommunications (DECT); Application Specific Access Profile (ASAP); DECT Multimedia Access Profile (DMAP); Profile requirement list and profile specific Implementation Conformance Statement (ICS) proforma; Part 2: Fixed radio Termination (FT)". [132] ETSI TS 101 945-1: "Digital Enhanced Cordless Telecommunications (DECT); Data Services Profile (DSP); Isochronous data bearer services with roaming capability (Service Type D, mobility class 2); Profile requirement list and profile specific Implementation Conformance Statement (ICS) proforma; Part 1: Portable radio Termination (PT)". [133] ETSI TS 101 945-2: "Digital Enhanced Cordless Telecommunications (DECT); Data Services Profile (DSP); Isochronous data bearer services with roaming capability (Service Type D, mobility class 2); Profile requirement list and profile specific Implementation Conformance Statement (ICS) proforma; Part 2: Fixed radio Termination (FT)". ETSI ETSI TR 101 178 V1.5.1 (2005-02) 15 [134] Directive 1999/5/EC of the European Parliament and of the Council of 9 March 1999 on radio equipment and telecommunications terminal equipment and the mutual recognition of their conformity (R&TTE Directive). [135] ETSI TS 101 859-1: "Digital Enhanced Cordless Telecommunications (DECT); DECT Multimedia Access Profile (DMAP); Application Specific Access Profile (ASAP); Profile Test Specification (PTS); Part 1: Summary". [136] ETSI TS 101 859-2: "Digital Enhanced Cordless Telecommunications (DECT); DECT Multimedia Access Profile (DMAP); Application Specific Access Profile (ASAP); Profile Test Specification (PTS); Part 2: Profile Specific Test Specification (PSTS) Portable radio Termination (PT)". [137] ETSI TS 101 859-3: "Digital Enhanced Cordless Telecommunications (DECT); DECT Multimedia Access Profile (DMAP); Application Specific Access Profile (ASAP); Profile Test Specification (PTS); Part 3: Profile Specific Test Specification (PSTS) - Fixed radio Termination (FT)". [138] FCC 02-151: "Federal Communications Commission, Second Report and Order, Amendment of Part 15 of the Commission's Rules Regarding Spread Spectrum Devices". [139] ITU-R Recommendation M.1457: "Detailed specifications of the radio interfaces of International Mobile Telecommunications-2000 (IMT-2000)". [140] ITU-R Recommendation M.1579: "Global circulation of IMT-2000 terminals". [141] ITU-R Recommendation M.1580: "Generic unwanted emission characteristics of base stations using the terrestrial radio interfaces of IMT-2000". [142] ITU-R Recommendation M.1581: "Generic unwanted emission characteristics of mobile stations using the terrestrial radio interfaces of IMT-2000". [143] ERC/DEC(99)25: "ERC Decision of 29 November 1999 on the harmonized utilization of spectrum for terrestrial Universal Mobile Telecommunications System (UMTS) operating within the bands 1 900 - 1 980 MHz, 2 010 - 2 025 MHz and 2 110 - 2 170 MHz". [144] ERC/DEC(00)01: "ERC Decision of 28 March 2000 extending ERC/DEC/(97)07 on the frequency bands for the introduction of terrestrial Universal Mobile Telecommunications System (UMTS)". [145] ETSI EN 301 489-6: "Electromagnetic compatibility and Radio spectrum Matters (ERM); ElectroMagnetic Compatibility (EMC) standard for radio equipment and services; Part 6: Specific conditions for Digital Enhanced Cordless Telecommunications (DECT) equipment". [146] ETSI TS 101 808-1: "Digital Enhanced Cordless Telecommunications (DECT); Wireless Relay Station (WRS); Test Case Library (TCL); Part 1: Test Suite Structure (TSS) and Test Purposes (TP) for Medium Access Control (MAC) layer". [147] ETSI TS 101 808-2: "Digital Enhanced Cordless Telecommunications (DECT); Wireless Relay Station (WRS); Test Case Library (TCL); Part 2: Abstract Test Suite (ATS) for Medium Access Control (MAC) layer - Cordless Radio Fixed Part Portable radio Termination (CRFP-PT)". [148] ETSI TS 101 808-3: "Digital Enhanced Cordless Telecommunications (DECT); Wireless Relay Station (WRS); Test Case Library (TCL); Part 3: Abstract Test Suite (ATS) for Medium Access Control (MAC) layer - Cordless Radio Fixed Part Fixed radio Termination (CRFP-FT)". [149] ETSI TS 101 808-4: "Digital Enhanced Cordless Telecommunications (DECT); Wireless Relay Station (WRS); Test Case Library (TCL); Part 4: Test Suite Structure (TSS) and Test Purposes (TP) - Data Link Control (DLC) layer". [150] ETSI TS 101 808-5: "Digital Enhanced Cordless Telecommunications (DECT); Wireless Relay Station (WRS); Test Case Library (TCL); Part 5: Abstract Test Suite (ATS) - Data Link Control (DLC) layer; Cordless Radio Fixed Part Portable radio Termination (CRFP-PT)". ETSI ETSI TR 101 178 V1.5.1 (2005-02) 16 [151] ETSI TS 101 808-6: "Digital Enhanced Cordless Telecommunications (DECT); Wireless Relay Station (WRS); Test Case Library (TCL); Part 6: Abstract Test Suite (ATS) - Data Link Control (DLC) layer; Cordless Radio Fixed Part Fixed radio Termination (CRFP-FT)". [152] ETSI TS 101 808-7: "Digital Enhanced Cordless Telecommunications (DECT); Wireless Relay Station (WRS); Test Case Library (TCL); Part 7: Test Suite Structure (TSS) and Test Purposes (TP) - Network (NWK) layer". [153] ETSI TS 101 808-8: "Digital Enhanced Cordless Telecommunications (DECT); Wireless Relay Station (WRS); Test Case Library (TCL); Part 8: Abstract Test Suite (ATS) for Network (NWK) layer - Cordless Radio Fixed Part Portable radio Termination (CRFP-PT)". [154] ETSI TS 101 808-9: "Digital Enhanced Cordless Telecommunications (DECT); Wireless Relay Station (WRS); Test Case Library (TCL); Part 9: Abstract Test Suite (ATS) for Network (NWK) layer - Cordless Radio Fixed Part Fixed radio Termination (CRFP-FT)". [155] ETSI TS 101 950: "Digital Enhanced Cordless Telecommunications (DECT); DECT Packet Radio Service (DPRS); Interoperability Test Specification". [156] ETSI TS 101 946-1: "Digital Enhanced Cordless Telecommunications (DECT); Low Rate Messaging Service (LRMS) including Short Message Service (SMS); Profile requirement list and profile specific Implementation Conformance Statement (ICS) proforma; Part 1: Portable radio Termination (PT)". [157] ETSI TS 101 946-2: "Digital Enhanced Cordless Telecommunications (DECT); Low Rate Messaging Service (LMRS) including Short Message Service (SMS); Profile requirement list and profile specific Implementation Conformance Statement (ICS) proforma; Part 2: Fixed radio Termination (FT)". [158] ETSI TS 101 947: "Digital Enhanced Cordless Telecommunications (DECT); DECT Packet Radio Service (DPRS); Application Specific Access Profile (ASAP): V.24 Interworking". [159] ETSI TS 102 011 (Parts 1 and 2): "Digital Enhanced Cordless Telecommunications (DECT); DECT Packet Radio Service (DPRS); Application Specific Access Profile (ASAP): V.24 Interworking; Profile Implementation Conformance Statement (ICS)". [160] ETSI TS 102 012: "Digital Enhanced Cordless Telecommunications (DECT); DECT Packet Radio Service (DPRS); Application Specific Access Profile (ASAP): V.24 Interworking; Profile Test Specification (PTS)". [161] ETSI TS 101 942: "Digital Enhanced Cordless Telecommunications (DECT); DECT Packet Radio Service (DPRS); Application Specific Access Profile (ASAP): Ethernet (Eth) Interworking". [162] ETSI TS 102 013 (Parts 1 and 2): "Digital Enhanced Cordless Telecommunications (DECT); DECT Packet Radio Service (DPRS); Application Specific Access Profile (ASAP): Ethernet Interworking; Profile Implementation Conformance Statement (ICS)". [163] ETSI TS 102 014: "Digital Enhanced Cordless Telecommunications (DECT); DECT Packet Radio Service (DPRS); Application Specific Access Profile (ASAP): Ethernet Interworking; Profile Test Specification (PTS)". [164] ETSI EN 301 406: "Digital Enhanced Cordless Telecommunications (DECT); Harmonized EN for Digital Enhanced Cordless Telecommunications (DECT) covering essential requirements under article 3.2 of the R&TTE Directive; Generic radio". [165] ETSI TR 102 010: "Digital Enhanced Cordless Telecommunications (DECT); DECT access to IP networks". [166] ETSI EN 301 908-10: "Electromagnetic compatibility and Radio spectrum Matters (ERM); Base Stations (BS), Repeaters and User Equipment (UE) for IMT-2000 Third-Generation cellular networks; Part 10: Harmonized EN for IMT-2000, FDMA/TDMA (DECT) covering essential requirements of article 3.2 of the R&TTE Directive". [167] ETSI TS 101 863-1: "Digital Enhanced Cordless Telecommunications (DECT); DECT/UMTS Interworking Profile (IWP); Part 1: General description and overview". ETSI ETSI TR 101 178 V1.5.1 (2005-02) 17 [168] ETSI TS 101 863-2: "Digital Enhanced Cordless Telecommunications (DECT); DECT/UMTS Interworking Profile (IWP); Part 2: CN-FP interworking". [169] ETSI TS 101 863-3: "Digital Enhanced Cordless Telecommunications (DECT); DECT/UMTS Interworking Profile (IWP); Part 3: 3,1 kHz speech service". [170] ETSI TS 101 863-4: "Digital Enhanced Cordless Telecommunications (DECT); DECT/UMTS Interworking Profile (IWP); Part 4: Supplementary services". [171] ETSI TS 101 863-5: "Digital Enhanced Cordless Telecommunications (DECT); DECT/UMTS Interworking Profile (IWP); Part 5: SMS point-to-point and cell broadcast". [172] ETSI TS 101 863-6: "Digital Enhanced Cordless Telecommunications (DECT); DECT/UMTS Interworking Profile (IWP); Part 6: Packet switched data". [173] ETSI TS 102 265: "Digital Enhanced Cordless Telecommunications (DECT); DECT access to IP networks". [174] ETSI TS 102 342: "Digital Enhanced Cordless Telecommunications (DECT); Cordless multimedia communication system; Open Data Access Profile (ODAP)". [175] ETSI TS 102 379: "Digital Enhanced Cordless Telecommunications (DECT); Fixed network Multimedia Message Service (F-MMS) Interworking Profile". [176] FCC 04-219 (1994): "Sixth Report and Order, Third Memorandum Opinium and Order, and Fith Memorandum and Order". |
5be8745fbd6c3768de450df8cbe68990 | 101 178 | 3 Abbreviations | For the purposes of the present document, the following abbreviations apply: ACTE Approvals Committee for Terminal Equipment ADPCM Adaptive Differential Pulse Code Modulation AMPS Advanced Mobile Phone Service AN Advisory Notes ARI Access Rights Identity ASAP Application Specific Access Profile ATS Abstract Test Suite CAP CTM Access Profile CC Call Control CI Common Interface CRFP Cordless Radio Fixed Part CTA Cordless Terminal Adapter CTM Cordless Terminal Mobility CTR Common Technical Regulations D8PSK Differential Octal Phase Shift Keying DAM DECT Authentication Module DBPSK Differential Binary Phase Shift Keying DCS Dynamic Channel Selection DECT Digital Enhanced Cordless Telecommunications DLC Data Link Control DMAP DECT Multimedia Application Profile DMT Dual Mode Terminal DPRS DECT Packet Radio Service DPSK Differential Phase Shift Keying DQPSK Differential Quadruple Phase Shift Keying DSP Data Services Profile DSS1 Digital Subscriber Signalling System No. 1 protocol DTAAB DECT Type Approval Advisory Board DTMF Dual Tone Multiple Frequency EEC European Economic Community EMC ElectroMagnetic Compatibility ETSI ETSI TR 101 178 V1.5.1 (2005-02) 18 EN European Standard ES End System F-MMS Fixed line-Multimedia Messaging Service FP Fixed Part FP2FP Fixed Part to Fixed Part F-SMS Fixed line-Short Messaging Service FT Fixed radio Termination FWA Fixed Wireless Access GAP Generic Access Profile GFSK Gaussian Frequency Shift Keying GSM Global System for Mobile communications ICS Implementation Conformance Statement IDBS Isochronous Data Bearer Service iDCS instantaneous Dynamic Channel Selection IF InterFace IMT International Mobile Telecommunications IN Intelligent Network IP Internet Protocol IS Intermediate System ISDN Integrated Services Digital Network ITU International Telecommunication Union IWP Inter-Working Profile IWU Inter-Working Unit LAN Local Area Network LOS Line Of Sight LRMS Low Rate Message Service MAC Medium Access Control MC Multi Carrier MM Mobility Management MMS Multimedia Messaging Service MSC Mobile services Switching Centre NA Network Aspects NGN Next Generation Networks NMT Nordic Mobile Telephone NWK Network O&M Operation and Maintenance ODAP Open Data Access Profile PARK Portable Access Rights Key PBX Private Branch eXchange PHL Physical Layer PICS Protocol Implementation Conformance Statement PLMN Public Land Mobile Network POTS Plain Old Telephone Service PP Portable Part PSPDN Packet-Switched Public Data Network PSTN Public Switched Telephone Network PT Portable radio Termination PTS Profile Test Specification PWT Personal Wireless Telecommunications QAM Quadrature amplitude modulation QoS Quality of Service RAP Radio local loop Access Profile REP Repeater Part RFP Radio Fixed Part RLL Radio in the Local Loop SARI Secondary Access Rights Identity SIM Subscriber Identity Module SIP Session Initiation Protocol SMG Special Mobile Group SMS Short Message Service SOHO Small Office and Home Office TACS Total Access Communications System ETSI ETSI TR 101 178 V1.5.1 (2005-02) 19 TBR Technical Basis for Regulation TCAM Telecommunication Conformity Assessment and Market surveillance committee TCL Test Case Library TDD Time Division Duplex TDMA Time Division Multiple Access TIA Telecommunications Industry Association TISPAN Telecoms & Internet converged Services & Protocols for Advanced Networks TRAC Technical Regulations Application Committee UDI Unrestricted Digital Information UMTS Universal Mobile Telecommunications System UPCS Unlicensed Personal Communications Service VoIP Voice over Internet Protocol WLL Wireless Local Loop WRS Wireless Relay Station |
5be8745fbd6c3768de450df8cbe68990 | 101 178 | 4 DECT services and applications | DECT is a general radio access technology for wireless telecommunications. It is a high capacity digital technology, for cell radii ranging from a few meters to several kilometres, depending on application and environment. It provides telephony quality voice services, and a broad range of data services, including Integrated Services Digital Network (ISDN) and packet data over the Internet. It can be effectively implemented in a range from simple residential cordless telephones up to large systems providing a wide range of telecommunications services, including FWA (WLL). ETSI ETSI TR 101 178 V1.5.1 (2005-02) 20 Figure 1 gives a high level graphic overview of applications and features of DECT. M ultiple environm ents M ultiple netw orks access M ultiple features M ultiple services M ultiple configurations R obust self planned real tim e radio channel selection Cost effective Q oS C oexistence Security M obility Interoperability C onfidentiality H igh capacity M ultiple access rights Seam less handover Flexible data rates PSTN /D SL ISD N /D SL IP (voice) LA N IEE E 802 IP (Internet) X .25 GSM U M TS AM PS N M T TAC S IM T-2000 4G R esidential B usiness R LL Public Telephony Fax D ata Im ages m 2m M essaging Internet E volutionary V ideo O ffice/Factory H om e RLL/CTM FP FP FP W RS W RS CTA W RS FP PPs PPs PPs PPs PPs PPs PPs Figure 1: Overview of DECT applications and features In addition to the basic FP to PP communication DECT also provides "Direct PP to PP Communications", "Direct FP to FP (FP2FP) Communications", and "Distributed Communications" (see clause 6.1.3). |
5be8745fbd6c3768de450df8cbe68990 | 101 178 | 4.1 General access technology | DECT, as a general radio access technology, can be used by many different applications to connect to different telecommunication networks. ETSI ETSI TR 101 178 V1.5.1 (2005-02) 21 It is essential to see the implications of the difference between an access technology and mobile radio systems like NMT, TACS, AMPS, GSM or UMTS. In these mobile radio systems the whole network is part of the specification and a mobile unit can only access the unique network that is part of the mobile radio system. DECT as a general access technology provides a comprehensive set of protocols, which provide the flexibility to interwork between numerous different applications and networks, including UMTS and IP networks. Thus a local and/or public network is not part of the DECT specification. Figure 2 illustrates this. DECT FT DECT CI DECT PT ES DECT FP DECT PP Local and/or public network IWU Figure 2: The DECT Common Interface (CI) DECT covers, in principle, only the air interface between the DECT Fixed Part (FP) and Portable Part (PP). The Inter-Working Unit (IWU) between a network and the DECT Fixed radio Termination (FT) is network specific and is not part of the DECT CI specification. Similarly, the End System (ES), the application(s) in a DECT PP is also excluded. The IWU and end systems are only specified as regards general end-to-end compatibility requirements e.g. on speech transmission. The IWU and ES are also subject to general attachment requirements for the relevant public network, e.g. the PSTN/ISDN. NOTE: An ES depends on the application supported in a PP. For a speech telephony application the ES may be a microphone, speaker, keyboard and display. The ES could equally well be a serial computer port, a fax machine or whatever the application requires. For each specific network, local or global, the specific services and features of that network are made available via the DECT air interface to the users of DECT PPs/handsets. Except for cordless capability and mobility, DECT does not offer a specific service; it is transparent to the services provided by the connected network. Thus the DECT CI standard is, and has to be, a tool box with protocols and messages from which a selection is made to access any specific network, and to provide means for market success for simple residential systems as well as for much more complex systems e.g. office ISDN services. The detailed requirements that have governed the DECT standardization efforts are provided by the ETR 043 [90], "Common Interface (CI); Services and facilities requirements specification", where one requirement is flexibility for additions and evolutionary applications. The DECT CI standard has a layered structure and is contained in EN 300 175 parts 1 [1] to 8 [8], see clause 6.1. It contains a complete set of requirements, procedures and messages. The messages also contain codes that are reserved for evolutionary applications and proprietary extensions. The basic telephony speech quality offered by DECT is very high compared to other wireless systems. This is provided by application of the ITU-T Recommendation G.726 [106] 32 kbit/s ADPCM speech codec and other speech transmission characteristics defined in EN 300 175-8 [8]. The DECT authentication algorithm and the DECT encryption algorithm are not part of the CI standard, but are obtained from ETSI through a special legal procedure. The administration of global unique DECT identity codes for manufacturing, installation and public operation are also handled by ETSI. ETSI ETSI TR 101 178 V1.5.1 (2005-02) 22 |
5be8745fbd6c3768de450df8cbe68990 | 101 178 | 4.2 Support of multiple applications | The DECT Instant or Continuous Dynamic Channel Selection provides effective coexistence of multiple applications on the common designated DECT frequency band. Furthermore different DECT applications can share the same resources: - the same PP; and/or - the same base station. 4.2.1 Co-existence of uncoordinated installations on a common frequency band The mandatory Instant Dynamic Channel Selection messages and procedures provide effective co-existence of uncoordinated private and public systems on the common designated DECT frequency band and avoid any need for traditional frequency planning. Each device has access to all channels (time/frequency combinations). When a connection is needed, the channel is selected, that at that instant and at that locality, is least interfered of all the common access channels. This avoids any need for traditional frequency planning, and greatly simplifies the installations. This procedure also provides higher and higher capacity by closer and closer Radio Fixed Parts (RFPs) installation, while maintaining a high radio link quality. Not needing to split the frequency resource between different services or users gives a very efficient use of the allocated spectrum. There is a large spectrum efficiency gain in sharing spectrum between applications and between operators. Much unique knowledge and experience is available in the DECT community on the subject of sharing spectrum between uncoordinated installations. To assist regulators, operators and manufacturers, information on this subject has been collected in TR 101 310 [101]. TR 101 310 [101] describes configurations for typical DECT applications and relevant mixes of these, including residential, office, public and RLL applications, and the traffic capacity is analysed, mainly by advanced simulations. These results are used together with relevant deployment scenarios to estimate spectrum requirements for reliable services, specifically for a public multi-operator licensing regime. Recommendations are given on conflict solving rules that conserves the high spectrum efficiency gain of shared spectrum while maintaining required control of the service quality of the own system. These recommendations regard synchronization, directional gain antennas, traffic limits per DECT Radio Fixed Part (RFP), use of Wireless Relay Stations (WRSs), different rules for private and public operators, and procedures needed for timely local adjustments where and when the local traffic increases. |
5be8745fbd6c3768de450df8cbe68990 | 101 178 | 4.2.2 Access to different systems by the same PP | Each DECT system, FP, has a broadcast globally unique Access Rights Identity (ARI). To each ARI are linked the available services, the related protocols and when required e.g. a cipher-key and/or authentication-key. For each service suitable protocols have been selected from the CI toolbox to efficiently provide these services. Similarly each DECT PP (handset) has one or more Portable Access Rights Keys (PARKs). One PARK relates to one FP or a group of FPs belonging to the same operator. To each PARK are linked the corresponding FP ARIs, related services and protocols, and when required e.g. a ciphering-key and/or authentication-key. Thus the same PP will have access to several different types of systems, if equipped with the relevant PARKs and associated protocols. Thus, it is basically not a common protocol for all systems that provide inter system roaming, but it is that the PP is equipped with access rights and related protocols to the wanted systems. A detailed description of the flexible and powerful DECT identity provisions are found in EN 300 175-6 [6]. |
5be8745fbd6c3768de450df8cbe68990 | 101 178 | 4.2.3 Access to several applications through the same base station | DECT also provides the means for sharing base stations or systems between different operators or applications, e.g. hosting private user groups in a large public system, Providing public access through a privately owned system, or hosting public access to several service providers in one system owned by one of the service providers. The ARIs related to available additional accesses are broadcast as Secondary Access Rights Identities (SARIs) by a system, FP. ETSI ETSI TR 101 178 V1.5.1 (2005-02) 23 |
5be8745fbd6c3768de450df8cbe68990 | 101 178 | 5 The standards making process | This clause describes the bodies which have influence on the DECT standardization and gives an introduction to the DECT related ETSI documents. |
5be8745fbd6c3768de450df8cbe68990 | 101 178 | 5.1 Standardization bodies | |
5be8745fbd6c3768de450df8cbe68990 | 101 178 | 5.1.1 ETSI EP DECT | The DECT standardization has been carried out by the members of the European Telecommunications Standards Institute (ETSI). More specifically, the technical work has been carried out by the Technical Body ETSI Project DECT (EP DECT). EP DECT has defined several working groups which focus on special areas like CI, Data, Testing, etc. NOTE: Initially the ETSI Technical Body responsible for DECT standardization was the Radio Equipment and Systems Sub-Technical Committee No. 3 (STC RES-03). Following re-organization in ETSI along project-oriented lines the work of STC RES-03 had been transferred to EP DECT in October 1996. In the followings the DECT Technical Body in ETSI is referred to as EP DECT regardless whether the actual work has been carried out by STC RES-03. The membership of ETSI is open to manufacturers, operators, users and regulators of telecommunications systems. |
5be8745fbd6c3768de450df8cbe68990 | 101 178 | 5.1.2 Related work in other ETSI Technical Bodies | |
5be8745fbd6c3768de450df8cbe68990 | 101 178 | 5.1.2.1 ElectroMagnetic Compatibility (EMC) standards | Like all other electronic equipment sold in EU member states, DECT equipment is subject to the requirements of the EMC directive 89/336/EEC [103]. It is the responsibility of ETSI to produce the standards which define the actual EMC performance requirements for compliance to the directive. The Technical Committee for EMC and Radio Spectrum Matters (TC ERM) is responsible for writing all EMC standards. The relevant EMC standard for DECT equipment is EN 301 489-6 [145]. The ETS 300 329 [17], which initially contained the DECT EMC requirements, became obsolete when EN 301 489-6 [145] had been implemented throughout European countries in 2003. EN 301 489-6 [145] specifies the applicable test conditions, performance assessment and performance criteria for DECT equipment. Outside Europe other EMC standards may be applicable according to local regulations. |
5be8745fbd6c3768de450df8cbe68990 | 101 178 | 5.1.2.2 Network standardization related to DECT | DECT is designed as an access technology to many networks. The DECT standards specify protocols which allow the provision of the mobility. But DECT does not define how the networks behind a DECT FP keep track of the location of a PP or deliver an incoming call to the PP. There is work in various ETSI committees to introduce the necessary protocols to support mobility in different networks. ETSI and ECMA have produced standards that specify mobility support in private telecommunications networks, thereby providing the ability for users to roam between different company offices connected to a corporate network. 2G and 3G networks such as GSM and UMTS standardized in ETSI and the Third Generation Partnership Project (3GPP), in which ETSI is a leading partner, already support mobility. The ETSI Telecoms & Internet converged Services & Protocols for Advanced Networks (TISPAN) project is looking in this issue in the area of fixed networks. There is therefore interest to re-use the mobility protocols of GSM/UMTS networks and [fixed] Next Generation Networks (NGN) in conjunction with the DECT air interface (these are DECT/GSM and DECT/UMTS interworking). The work of Special Mobile Group (SMG) in the past, and, the work of the 3GPP and TISPAN today therefore are of relevance to the DECT standardization. ETSI ETSI TR 101 178 V1.5.1 (2005-02) 24 ETSI Technical Committee Network Aspects (TC NA) and Technical Committee Signalling Protocols & Switching (TC SPS) have produced standards that specify mobility support in IN based networks thereby allowing users to roam across very wide areas of the public network. This work formed part of the ETSI Project Cordless Terminal Mobility (EP CTM). The CTM Project also included roaming between different networks (public-public and/or public-private). |
5be8745fbd6c3768de450df8cbe68990 | 101 178 | 5.1.3 Other bodies | In addition to ETSI several other bodies are involved in or related to the DECT standardization process. The Commission of the European Community provides support in developing the market for DECT equipment both in terms of legislation covering the allocation of the frequencies used by DECT (in conjunction with CEPT ERC), in supporting the regulatory environment for DECT products (through the ACTE committee), and financing of part of the standardization effort. CEPT has a membership of 45 European administrations. Its ECTRA committee is responsible for managing telecommunications matters; its ERC committee manages radio matters. The ERC plans and allocates spectrum for pan-European services and promotes measures to harmonize standards and regulatory requirements for these services. ACTE was the Approvals Committee for Terminal Equipment. It did consist of representatives of telecommunications regulators from all EC countries. ACTE was replaced under the new R&TTE Directive [134] by a committee which is called TCAM (Telecommunication Conformity Assessment and Market Surveillance Committee) composed of representatives of the Member States and chaired by a representative of the Commission. DTAAB (DECT Type Approval Advisory Board) was a sub-group of the Technical Regulations Application Committee (TRAC). It included representatives from test houses, operators, standardization bodies, type approval authorities, regulatory authorities and manufacturers. DTAAB considered the resolution of problems in a harmonized way relating to the DECT area. The common understanding was recorded in various Advisory Notes (ANs) which combine to define a set of advice on the best practice to be applied to regulatory type examination and approval of DECT terminal equipment. DTAAB was closed under the new R&TTE Directive [134]. There is a close co-operation between ITU and EP DECT regarding the standardization work for the International Mobile Telecommunications 2000 system (IMT-2000). ITU-R has included DECT as one of the five radio interfaces in the recommendation ITU-R Recommendation M.1457 [139] that contains the detailed specifications for the IMT-2000 radio interfaces. The Telecommunications Industry Association (TIA) and ETSI have signed a document exchange agreement. Under this agreement the TIA publishes the PWT standards, which are based in major part on the DECT standards, but changes have been made to conform to North American national regulations. |
5be8745fbd6c3768de450df8cbe68990 | 101 178 | 5.2 ETSI documents | There are several types of documents that have been produced by EP DECT: ETSI ENs (European Standards (telecommunications series)) The European Standards (telecommunication series) contain the detailed technical requirements and are published after a formal European wide review process (Public Enquiry and Vote). The set of DECT related European Standards consists of: - the basic DECT standards; - profiles; and - testing standards. The basic DECT standards specify a set of protocols, telecommunication services, interfaces and encoding rules. They are described in clause 6. The DECT profiles identify a consistent set of chosen options from one or more base specifications for a given application. Base specifications are mainly the basic DECT standards (especially DECT CI) but they may be also other profiles. Information on the currently existing profiles and their applications is given in clause 7. ETSI ETSI TR 101 178 V1.5.1 (2005-02) 25 Furthermore testing standards are specified which are described in clauses 8 and 9. NOTE 1: Following the re-organization of ETSI new deliverable types and procedures have been introduced. Prior to this change most of the DECT standards were published as ETSs; new editions of DECT ETSs (ETSI European Standards) are published as ENs. ETSI Technical Specification (TSs) TSs contain the detailed technical requirements and are published after the approval of the technical body thereby allowing for shorter time to market, validation and maintenance. The set of DECT related TSs currently consists of: - Profiles; and - testing standards. For new specifications and standards the preferred delivered type is TS, and the number of ENs will see a corresponding decrease. ETSI Technical Basis for Regulations (TBRs) and Harmonized Standards (H ENs) TBRs contain technical requirements and test methods for use in the corresponding Common Technical Regulations (CTRs), earlier used in Europe. Some TBRs have still value for conformance testing, but have no regulatory impact any longer in Europe. Some non-European countries may still have regulations related to DECT TBRs. The new regulatory standards for Europe are Harmonized Standards. The issue of regulatory requirements are covered in further detail in clause 10. ETSI Technical Reports (TRs and ETRs) Technical Reports contain information of a more general nature which provides useful background information on the standards. A summary of DECT Technical Reports is given in clause 11. NOTE 2: Following the re-organization of ETSI new deliverable types and procedures have been introduced. Prior to this change the DECT technical reports were published as ETRs; new editions of ETRs (ETSI Technical Reports) are published as TRs. |
5be8745fbd6c3768de450df8cbe68990 | 101 178 | 6 The basic DECT standards | The basic DECT standards are the: - DECT Base Standard, Common Interface (CI); - Wireless Relay Station (WRS); and - DECT Authentication Module (DAM). |
5be8745fbd6c3768de450df8cbe68990 | 101 178 | 6.1 The DECT Base Standard, Common Interface (CI) | |
5be8745fbd6c3768de450df8cbe68990 | 101 178 | 6.1.1 General | The base standard for DECT is the Common Interface (CI) EN 300 175 [1] to [8]. It defines the operation of the DECT air interface and contains details of all messages and procedures used in DECT equipment. Not all of the procedures described in EN 300 175 [1] to [8] are actually required in any particular application. EN 300 175 [1] to [8] do not specify which procedures are required in each particular application. To achieve interoperability of equipment other documents (profiles, see clause 7) are required to specify more specific requirements for each applications. The content of each part of EN 300 175 [1] to [8] is now described. ETSI ETSI TR 101 178 V1.5.1 (2005-02) 26 EN 300 175 Part 1: Overview [1] This is a general introduction to the other parts of EN 300 175 [1] to [8]. Among others, it contains a comprehensive list with definitions and abbreviations used by the DECT technology specification. EN 300 175 Part 2: Physical Layer (PHL) [2] The PHL layer describes the requirements of the radio parameters of the DECT system, e.g. the frequency of operation, the modulation method, the TDMA data transmission structure, power limits, spurious emission requirements, etc. Most of the requirements of this part of the base standard are applicable to all DECT products. EN 300 175 Part 3: Medium Access Control (MAC) layer [3] The MAC layer defines the procedures and protocols used to set-up transmission bearers across the air interface. EN 300 175 Part 4: Data Link Control (DLC) layer [4] The DLC layer is concerned with the provision of reliable data links to the Network layer. Its function can be compared to the ISDN layer 2 LAPD protocol. EN 300 175 Part 5: Network (NWK) layer [5] The NWK layer is the main signalling layer of the protocol stack, containing the functions for call control, mobility management, connection oriented service, connectionless message service and supplementary services. EN 300 175 Part 6: Identities and addressing [6] Each DECT equipment, whether Portable Part (PP) of Fixed Part (FP), requires to be programmed with various identities to enable PPs to access the appropriate networks and to route calls to the appropriate terminal. DECT has a very flexible identity structure, which is explained in part 6. EN 300 175 Part 7: Security features [7] The use of radio in telecommunications introduces several security issues, including, but not limited to, prevention of eavesdropping and fraudulent access to networks via impersonation of PT identities. The DECT security procedures are defined in part 7. EN 300 175 Part 8: Speech coding and transmission [8] Part 8 defines the telephony requirements for DECT systems used for the transmission of 3,1 kHz speech e.g. digital transmission levels, audio frequency masks, echo control/suppression requirements necessary to ensure interworking with public telecommunications networks. |
5be8745fbd6c3768de450df8cbe68990 | 101 178 | 6.1.2 DECT special properties | |
5be8745fbd6c3768de450df8cbe68990 | 101 178 | 6.1.2.1 The DECT 4-level/8-level/16-level/64-level modulation option | Initially the DECT base standard provided 2-level modulation option only. Driven by requirements for higher data rates backwards compatible 4-, 8-level, 16-level and 64-level modulation options were introduced, which provide up to 5 Mbit/s effective user data services via a single DECT radio as shown in table 1. Table 1: Available physical layer bit rates Levels Narrow bandwidth 2 1,152 Mbit/s 4 2,304 Mbit/s 8 3,456 Mbit/s 16 4,608 Mbit/s 64 6,912 Mbit/s ETSI ETSI TR 101 178 V1.5.1 (2005-02) 27 The 4-level modulation is π/4-DQPSK, the 8-level modulation π/8-D8PSK, the 16-level modulation 16-QAM and the 64-level modulation 64-QAM. The shaping filter shall be root-raised cosine with Ts = 1/1 152 000 s (Ts = symbol duration) and roll-off (α) = 0,5 for all types of modulation. π/2-DPSK may be generally used as 2-level modulation instead of the GFSK modulation. The higher level modulation schemes options increase the bit rate of single radio DECT equipment by a factor 2, 3, 4 or 6 with retained transmitter bandwidth, carrier spacing and slot structure. It is only allowed to use 4-level and/or higher level modulation in the B + Z or the A + B + Z fields EN 300 175-3 [3], whereby the S + A or the S field respectively shall use the π/2-DBPSK 2-level modulation. π/2-DPSK may be generally used as 2-level modulation instead of the GFSK modulation. The allowed combinations of modulation schemes are defined in table 2. Table 2: Allowed combinations of modulation schemes Configuration S-field A-field B + Z-field 1a GFSK GFSK GFSK 1b π/2-DBPSK π/2-DBPSK π/2-DBPSK 2 π/2-DBPSK π/2-DBPSK π/4-DQPSK 3 π/2-DBPSK π/2-DBPSK π/8-D8PSK 4a π/2-DBPSK π/4-DQPSK π/4-DQPSK 4b π/2-DBPSK π/8-D8PSK π/8-D8PSK 5 π/2-DBPSK π/2-DBPSK 16-QAM 6 π/2-DBPSK π/2-DBPSK 64-QAM Configuration 1a is the basic DECT modulation scheme. Configurations 2, 3, 5 and 6 ensure that equipment with basic 2 level modulation, and equipment with a higher rate option, can efficiently share a common base station infrastructure. The GFSK modulation can be detected for instance in a non-coherent π/2-DPSK receiver, and the π/2-DPSK modulation can be detected in a GFSK receiver. Therefore all A-field information including broadcast system information, paging and call control can be received independently of whether configuration 1, 2, 3, 5 or 6 is used. The modulation accuracy for configurations 1b, 2, 3, 4a, 4b, 5 and 6 shall be such that high performance coherent demodulation and equalization can be implemented in the receivers. The chosen types of modulation are also suitable for differential detector implementations. A typical sensitivity of -95 dBm is expected for the 4-level modulation if coherent demodulation is implemented, and about -93 dBm with a differential digital detector. In addition to the higher level modulation schemes channel coding based on turbo channel encoding combined with puncturing has been introduced. The Encoder is intended to mitigate deep fading effects that damage the B-field data transmission. Burst errors during the transmission affect both useful bits and parity bits. Decoding processing leads to an improved decision on transmitted useful bits. Turbo decoding integrated in an iterative processing loop ensures an efficient and adaptive decoding processing fit to the propagation channel constraints and the desired bit rate target and QoS to the service transmission. The Puncturing combined with several modulation level schemes allows a large available bit rate range for each propagation scenario. The adaptive bit rate implementation is adjusted in regards with the concerned propagation scenario and the B-field data framing. Puncturing gives an efficient mapping of encoded bits within every symbol. It is defined in such a way that parity bits and net bits are arranged in a specific way within the symbols. |
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