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7bf306cb4fc871d0f19a5dd15f9e901d | 101 728 | 5.6.2.1 Impedance testing at the POTS port | The test set-up is in figure 13. The DC feeding current is specified in clause 5.1.5. The requirements should be met with and without the ADSL port terminated. Line port Remote Splitter ADSL load |Z1 + Z2| RL = 20*log ------------ |Z1 - Z2| Z 1 Z 2 POTS port ADSL port Figure 13: Impedance testing on a Remote splitter (... |
7bf306cb4fc871d0f19a5dd15f9e901d | 101 728 | 5.6.2.2 Impedance testing at the Line port | The test set-up is in figure 14. The DC feeding current is specified in clause 5.1.5. The requirements should be met with and without the ADSL port terminated. Remote Splitter ADSL load |Z1 + Z2| RL = 20*log ------------- |Z1 - Z2| Z 2 POTS port ADSL port Z 1 Line- port Figure 14: Impedance testing on a Remote splitter... |
7bf306cb4fc871d0f19a5dd15f9e901d | 101 728 | 5.7 Unbalance about earth | The impedance unbalance about earth is expressed as the Longitudinal Conversion Loss (LCL). For the splitter, two slightly different tests can be distinguished. |
7bf306cb4fc871d0f19a5dd15f9e901d | 101 728 | 5.7.1 The two port test | This test is used for splitters with two electrically different ports e.g. the user splitter when the DC blocking function is not build-in in the splitter but in the ADSL modem (see figure 2). The Line port and ADSL port are electrically the same for this type. |
7bf306cb4fc871d0f19a5dd15f9e901d | 101 728 | 5.7.2 The three port test | Is used for splitters with three electrically different ports e.g. when the DC blocking function and/or HPF (see figures 3 and 4) is in the splitter. The test set-up is in figure 15. The DC feeding current is specified in clause 5.1.5. Line port Earth point POTS port ADSL port U 0 Earth point V ~ V R R R R U T S Splitt... |
7bf306cb4fc871d0f19a5dd15f9e901d | 101 728 | 5.8 Isolation (Insertion Loss) at 32 kHz to 1 100 kHz | The splitter needs to isolate the POTS port from the ADSL signals which may impact voiceband services through non- linear or other effects. The high Insertion Loss, required for this purpose is called isolation. Although the frequency range for full rate ADSL (ITU-T Recommendation G.992.1 [7]) starts at about 26 kHz, t... |
7bf306cb4fc871d0f19a5dd15f9e901d | 101 728 | 5.9 Noise | The noise produced by a splitter itself (without signals applied to it) should be limited. Especially "active splitters" can produce noise. The DC feeding current is specified in clause 5.1.5. ETSI ETSI TR 101 728 V1.2.1 (2002-05) 21 |
7bf306cb4fc871d0f19a5dd15f9e901d | 101 728 | 5.9.1 Noise 300 Hz to 4 000 Hz | The noise in the range 300 Hz to 4 000 Hz, measured at the Line port and the POTS port of a splitter, should be less than -70 dBV and, measured with a psophometer, less than -75 dBVp. Line port and POTS port should be terminated with ZR. The ADSL port is terminated with the ADSL load (ZADSL). |
7bf306cb4fc871d0f19a5dd15f9e901d | 101 728 | 5.9.2 Noise 26 kHz to 1 100 kHz | The noise, in the frequency range 26 kHz to 1 100 kHz, measured at the ADSL port and at the Line port should be less than -70 dBm measured in each bandwidth of 10 kHz, this is equal to -110 dBm/Hz. Line port, POTS port and ADSL port should be terminated with ZRHF. |
7bf306cb4fc871d0f19a5dd15f9e901d | 101 728 | 5.10 Distortion and Intermodulation | The harmonic distortion and possible intermodulation, with as result transferring of ADSL signal energy into the voice band, should be low to prevent degradation of the voice service. This could happen in case of non-linearities in the splitter (e.g. behaviour of coils or semiconductor devices). |
7bf306cb4fc871d0f19a5dd15f9e901d | 101 728 | 5.10.1 Distortion | Applied to the splitter are: • a 1 020 Hz signal at the Line port at a level of -9 dBV into ZR; • an ADSL signal (or an artificial equivalent with sufficient PAR) at the ADSL port (simulating the local modem). The level of the signal is +12,5 dBm (ADSL upstream signal); • an ADSL signal at the Line port (simulating the... |
7bf306cb4fc871d0f19a5dd15f9e901d | 101 728 | 5.10.2 Intermodulation | The DC feeding current is specified in clause 5.1.5. The following test signals are applied to the splitter: • A 4-tone test signal at the Line port (from ITU-T Recommendation O.42 [4]). • An ADSL signal (or an artificial equivalent with sufficient PAR) at the ADSL port (simulating the local modem). The level of the si... |
7bf306cb4fc871d0f19a5dd15f9e901d | 101 728 | 5.11 Group Delay Distortion | The increase of the delay distortion by inserting one splitter as depicted in figure 17 should be less than the figures in table 7, relative to the lowest measured delay in the frequency range 300 Hz to 4 000 Hz. Splitter ADSL load Line port ADSL port POTS port ~ Signal source Group Delay meter Z (load) Figure 17: Test... |
7bf306cb4fc871d0f19a5dd15f9e901d | 101 728 | 5.12 Metering at 12 kHz or 16 kHz | Some network operators use 12 kHz or 16 kHz to provide metering or advice of charge information for the POTS service. These signals are transmitted at high signal levels using relatively low source and load impedances resulting in higher than normal signal currents. Support of 12 kHz or 16 kHz metering by a splitter re... |
7bf306cb4fc871d0f19a5dd15f9e901d | 101 728 | 5.13 Common Mode Impedance | POTS terminals may produce common mode impulses which will pass through a differential mode filter and cause bit-errors in the DSL modem. This may happen when going "on/off hook", POTS line cards may produce them at the start/stop of the ringing cadence. Another source of troublesome common mode signal can be from swit... |
7bf306cb4fc871d0f19a5dd15f9e901d | 101 728 | 5.14 Immunity to high level POTS signals | An important requirement of a POTS splitter/filter is to prevent any unwanted signals at DSL frequencies being generated due to the presence of high voltage signals/transients present on the line. The effect of such frequencies on the modem can be twofold. The high voltage swing on the line generates a corresponding hi... |
7bf306cb4fc871d0f19a5dd15f9e901d | 101 728 | 5.15 Additional requirements for Option 2 (LPF and "weak" HPF) | These are additional and/or more detailed requirements for splitter units according to Option 2, with an LPF and a weak HPF in the splitter unit (Option 2 is described in clause 4.3). The Option 2 splitter has to fulfil all the requirements of clause 5, (clauses 5.1 to 5.14). For Return Loss, the splitter shall fulfil ... |
7bf306cb4fc871d0f19a5dd15f9e901d | 101 728 | 6 Distributed filters (additional requirements) | Due to difficulties and the costs involved with installing the remote splitter at the users premises and the developments and experiences with G. Lite, (ITU-T Recommendation G.992.2 [6]) the idea has been developed to install a small filter at each connected TE instead of one central splitter. The expectation is that t... |
7bf306cb4fc871d0f19a5dd15f9e901d | 101 728 | 6.1 DC requirements | Due to the fact that in the case of distributed filters, there will most likely be a number of them connected in parallel (see figure 21) the additional DC requirements described in the following clauses will apply. |
7bf306cb4fc871d0f19a5dd15f9e901d | 101 728 | 6.1.1 DC resistance to earth | Splitters with an earth terminal shall have a sufficiently high resistance to earth. The DC resistance between each terminal (i.e. A-wire and B-wire) of the splitter and earth, when tested with 100 V DC, shall not be less than 100 MΩ. |
7bf306cb4fc871d0f19a5dd15f9e901d | 101 728 | 6.1.2 DC resistance between A-wire and B-wire | The DC resistance between the A-wire and B-wire terminal of the splitter, when tested with 100 V DC, shall not be less than 25 MΩ. |
7bf306cb4fc871d0f19a5dd15f9e901d | 101 728 | 6.2 Pass band | |
7bf306cb4fc871d0f19a5dd15f9e901d | 101 728 | 6.2.1 Voltage drop at 25 Hz and 50 Hz | A filter should have a sufficient low voltage drop for 25 Hz and 50 Hz ringing signals. The connected TE is in the quiescent state during ringing. The filter should fulfil the voltage drop requirement of clause 5.3.1 while there is a DC current in the range 0 mA to 0,5 mA (representing the quiescent state of the line).... |
7bf306cb4fc871d0f19a5dd15f9e901d | 101 728 | 6.2.2 Insertion Loss | The same requirement as in clause 5.3.2 applies. A test configuration is described in figure 21. The DC feeding current is specified in clause 5.1.5. ADSL load feeding bridge Filter 1 Filter 2 Filter N load TE 2 load TE N POTS port POTS port POTS port Line port Line port Line port DC supply IDC = loop current AC-load =... |
7bf306cb4fc871d0f19a5dd15f9e901d | 101 728 | 6.2.3 Insertion Loss distortion | The absolute difference between the Insertion Loss at any frequency in the range 200 Hz to 4 000 Hz and the Insertion Loss at 1 kHz shall be less than 1 dB. A test configuration is described in figure 21. ETSI ETSI TR 101 728 V1.2.1 (2002-05) 28 |
7bf306cb4fc871d0f19a5dd15f9e901d | 101 728 | 6.3 Impedance of distributed (remote) filters | |
7bf306cb4fc871d0f19a5dd15f9e901d | 101 728 | 6.3.1 Impedance testing at the POTS port | A test configuration is presented in figure 22. The DC feeding current is specified in clause 5.1.5. ZR / ZSL Z1 Z2 ADSL load RL test equipment feeding bridge Filter 1 Filter 2 Filter N load TE 2 load TE N POTS port POTS port POTS port Line port Line port Line port DC supply IDC=loop current IDC = quiescent state AC-lo... |
7bf306cb4fc871d0f19a5dd15f9e901d | 101 728 | 6.3.2 Impedance testing at the Line port | A test configuration is presented in figure 23, the DC feeding current is specified in clause 5.1.5. ZR / ZSL Z1 Z2 ADSL load RL test equipment feeding bridge Filter 1 Filter 2 Filter N load TE 2 load TE 1 load TE N POTS port POTS port POTS port Line port Line port Line port DC supply IDC = loop current AC-load = ZR / ... |
7bf306cb4fc871d0f19a5dd15f9e901d | 101 728 | 6.4 Unbalance about earth | Unbalance about earth of a single filter is tested with the test method of clause 5.7. For filters with dynamic behaviour (dependant on the DC current) the filter shall fulfil the requirements with the DC feeding current is specified in clause 5.1.5. |
7bf306cb4fc871d0f19a5dd15f9e901d | 101 728 | 6.5 Isolation (Insertion Loss) at 32 kHz to 1 100 kHz | Using the test configuration described in figure 21 and the DC feeding current as specified in clause 5.1.5. The isolation requirements of clause 5.8 should be fulfilled. 6.6 Line side impedance of low pass filter at ADSL frequencies (32 kHz to 1 100 kHz) The low pass filter should present an impedance to the line side... |
7bf306cb4fc871d0f19a5dd15f9e901d | 101 728 | 6.7 Installation of filters | It is recommended that the filter be clearly marked to indicate which port connects to line and which to phone, in order to prevent incorrect user installation. NOTE: This does not apply to filters which are reversible because both ports are electrically equal. It is however expected that it could be difficult to make ... |
7bf306cb4fc871d0f19a5dd15f9e901d | 101 728 | 7 Other requirements | |
7bf306cb4fc871d0f19a5dd15f9e901d | 101 728 | 7.1 "Signature network" for maintenance purposes | Some operators are using a test system for their POTS lines. It could be beneficial to add a "signature network" to the splitters to enable the test system to recognize the splitters in a line. Examples signature networks are in figures 24 and 25. The signatures are located on the POTS port side of the splitters. ADSL ... |
7bf306cb4fc871d0f19a5dd15f9e901d | 101 728 | 7.2 Line tests | It is known that particularly in cases of unbundled local loops some difficulties arise from testing the access lines, e.g. who and how is testing which facility and what impact does this testing have on other services sharing the physical line. ETSI ETSI TR 101 728 V1.2.1 (2002-05) 31 Annex A: Impedance of splitters f... |
db2cdb5dce32777910df5b2264c2eca0 | 101 794 | 1 Scope | The present document identifies various requirements for a mobility service that allow users with Wireless Terminals (WTs) to freely move beyond the domain of their home network and still be able to access the telecommunication services of their own Private Integrated Services Network (PISN), also called the home netwo... |
db2cdb5dce32777910df5b2264c2eca0 | 101 794 | 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. • Fo... |
db2cdb5dce32777910df5b2264c2eca0 | 101 794 | 3 Definitions and abbreviations | |
db2cdb5dce32777910df5b2264c2eca0 | 101 794 | 3.1 External definitions | The following external definitions apply: Address ISO/IEC 11571 [22] Additional Network Feature (ANF) ISO/IEC 15428 [25] Basic call ISO/IEC 11574 [23] Call ISO/IEC 11574 [23] Home Data Base ISO/IEC 15428 [25] Integrated Services Digital Network (ISDN) ITU-T Recommendation I.112 [34] Number ISO/IEC 11571 [22] Private In... |
db2cdb5dce32777910df5b2264c2eca0 | 101 794 | 3.2 Internal definitions | |
db2cdb5dce32777910df5b2264c2eca0 | 101 794 | 3.2.1 Access rights | An indication that the wireless terminal has appropriate access allowances to the WTM service. |
db2cdb5dce32777910df5b2264c2eca0 | 101 794 | 3.2.2 Authentication | A property by which the correct identity of an entity or party is established with a required assurance. |
db2cdb5dce32777910df5b2264c2eca0 | 101 794 | 3.2.3 Call Completion WTM user Not Reachable | An optional subscription service that allows completion of calls to a WTM user that previously was unreachable because the mobile station was switched off, detached or outside radio coverage. |
db2cdb5dce32777910df5b2264c2eca0 | 101 794 | 3.2.4 Call Forwarding WTM user Not Reachable | An optional subscription service that directs incoming calls to an answering position whenever the mobile station can not be reached because it is switched off, detached or outside radio coverage. |
db2cdb5dce32777910df5b2264c2eca0 | 101 794 | 3.2.5 Calling user | The entity that originates a call to a user. |
db2cdb5dce32777910df5b2264c2eca0 | 101 794 | 3.2.6 Coverage area | The area over which reliable radio communication can be established and maintained. |
db2cdb5dce32777910df5b2264c2eca0 | 101 794 | 3.2.7 CTM user | A user whose CTM service is provided by a service provider to the general public. |
db2cdb5dce32777910df5b2264c2eca0 | 101 794 | 3.2.8 Fixed Part (FP) | A physical grouping that contains all of the WT processes and procedures on the fixed side on the WT air interface. A FP contains the logical elements of one Fixed Radio Termination, plus additional implementation specific elements. |
db2cdb5dce32777910df5b2264c2eca0 | 101 794 | 3.2.9 Handover | The process of switching a call in progress from one physical channel to another physical channel. |
db2cdb5dce32777910df5b2264c2eca0 | 101 794 | 3.2.10 Location area | The area where a mobile station may receive calls as the result of a single location registration. |
db2cdb5dce32777910df5b2264c2eca0 | 101 794 | 3.2.11 Mobile station | A generic term for any type of mobile terminal. |
db2cdb5dce32777910df5b2264c2eca0 | 101 794 | 3.2.12 Network operator | An organization that provides the network operating elements and resources for the execution of the applicable service(s). ETSI ETSI TR 101 794 V1.1.1 (2000-03) 10 |
db2cdb5dce32777910df5b2264c2eca0 | 101 794 | 3.2.13 Optional service feature | An optional function added to a service in order to enhance the service offering. |
db2cdb5dce32777910df5b2264c2eca0 | 101 794 | 3.2.14 Private | An attribute indicating that the application of the so qualified item, e.g. a network, a unit of equipment, a service, is offered to or is in the interest of a determined set of users. NOTE: The term does not include legal or regulatory aspects, nor does it indicate any aspects of ownership. |
db2cdb5dce32777910df5b2264c2eca0 | 101 794 | 3.2.15 Private User Mobility (PUM) | A service whereby the static relationship between the user and the terminal providing the telecommunications services is abandoned. PUM makes it possible for the user to change terminal, wired or wireless, whilst retaining the telecommunications services. This change of terminal may take place between calls or during a... |
db2cdb5dce32777910df5b2264c2eca0 | 101 794 | 3.2.16 Public | An attribute indicating that the application of the so qualified item, e.g. a network, a unit of equipment, a service, is offered to the general public. NOTE: The term does not include legal or regulatory aspects, nor does it indicate any aspects of ownership. |
db2cdb5dce32777910df5b2264c2eca0 | 101 794 | 3.2.17 Public ISDN | A public telecommunication network that supports public ISDN services. |
db2cdb5dce32777910df5b2264c2eca0 | 101 794 | 3.2.18 Roaming | The movement, without a call in progress of a wireless terminal, from one coverage area to another coverage area. |
db2cdb5dce32777910df5b2264c2eca0 | 101 794 | 3.2.19 Service | A telecommunication function that is offered to a customer in order to satisfy a telecommunication requirement. |
db2cdb5dce32777910df5b2264c2eca0 | 101 794 | 3.2.20 Service feature | A specific aspect of a telecommunication service that can also be used in conjunction with other telecommunication services or service features as part of a commercial offering. It is either a mandatory part of a telecommunication service or an optional part offered as an enhancement to a telecommunication service. |
db2cdb5dce32777910df5b2264c2eca0 | 101 794 | 3.2.21 Service provider | An organization offering a service for subscription. The network operator may be the service provider. |
db2cdb5dce32777910df5b2264c2eca0 | 101 794 | 3.2.22 Service profile | A user specific record containing all the services and service options that a user can use. |
db2cdb5dce32777910df5b2264c2eca0 | 101 794 | 3.2.23 Service subscriber | A human or organization that subscribes to the service(s) offered by a Service Provider. ETSI ETSI TR 101 794 V1.1.1 (2000-03) 11 |
db2cdb5dce32777910df5b2264c2eca0 | 101 794 | 3.2.24 Visitor Database (VDB) | The database in which location information concerning a wireless terminal or a mobile user is stored, as long as the wireless terminal or the mobile user is localized in the corresponding visitor area. |
db2cdb5dce32777910df5b2264c2eca0 | 101 794 | 3.2.25 Visitor area | The coverage area of a visitor database. |
db2cdb5dce32777910df5b2264c2eca0 | 101 794 | 3.2.26 WTM Location area | The area in which a wireless terminal may receive calls as the result of a single location registration. |
db2cdb5dce32777910df5b2264c2eca0 | 101 794 | 3.2.27 WTM Location deregistration | A process whereby the wireless terminal is made temporarily unavailable for incoming calls. |
db2cdb5dce32777910df5b2264c2eca0 | 101 794 | 3.2.28 WTM Location registration | A process whereby the position of a wireless terminal is determined to the level of one Location Area. |
db2cdb5dce32777910df5b2264c2eca0 | 101 794 | 3.2.29 Wireless Terminal Mobility-Authentication of Network | A supplementary service that enables a served WTM user, as a security measure, to validate the identity of the PISN. |
db2cdb5dce32777910df5b2264c2eca0 | 101 794 | 3.2.30 Wireless Terminal Mobility-Authentication of Terminal | A supplementary service that enables a PISN, as a security measure, to validate the identity provided by the WTM user. |
db2cdb5dce32777910df5b2264c2eca0 | 101 794 | 3.2.31 WTM user | A user whose WTM service provider is with a PISN. |
db2cdb5dce32777910df5b2264c2eca0 | 101 794 | 3.2.32 Wireless Terminal Mobility number | A number that uniquely identifies a WTM user (e.g., the WTM user’s PISN number or an E.164 [31] number (ITU-T Recommendation E.164 [31]) and which is used by the Calling user to address the call to the WTM user. |
db2cdb5dce32777910df5b2264c2eca0 | 101 794 | 3.2.33 Wireless Terminal Mobility User (WTM user) | A user, primarily a human, of a wireless terminal, but also including those entities within both the wireless terminal and Fixed Part (FP) that act on behalf of the user to provide protocol translation and autonomous actions such as location registration requests and responses to authentication requests. ETSI ETSI TR 1... |
db2cdb5dce32777910df5b2264c2eca0 | 101 794 | 3.3 Abbreviations | For the purposes of the present document, the following abbreviations apply: ANF Additional Network Feature ANF-WTMI, WTMI Additional Network feature- Wireless Terminal Mobility Incoming Call ANF-WTMO, WTMO Additional Network feature- Wireless Terminal Mobility Outgoing Call ANF-WTH, WTH Additional network feature - Wi... |
db2cdb5dce32777910df5b2264c2eca0 | 101 794 | 4 Description | The intention of the Wireless Terminal Mobility (WTM) service is to enable WTM users with a single service subscription, to make and/or receive calls regardless of the WTM user’s current location if: - radio coverage is provided; - a roaming agreement exists between the service providers and/or network operators; - the... |
db2cdb5dce32777910df5b2264c2eca0 | 101 794 | 4.1 Location functions | Location registration functions are used to keep the WTM user’s home network updated of the WTM users last known location area within the home PISN or in a visited network. A WTM service may be implemented by manually invoking the location registration function. However, it is recommended that the WTM service is based ... |
db2cdb5dce32777910df5b2264c2eca0 | 101 794 | 4.1.1 WTM Location Registration (WTLR) | Location Registration is a process enabling WTM users to register their current location area with the user’s Home Data Base (HDB) thus allowing fast delivery of incoming calls to the WTM user. As an additional service feature, the location registration process may be enhanced by a transfer of the WTM user’s service pr... |
db2cdb5dce32777910df5b2264c2eca0 | 101 794 | 4.1.2 WTM Location De-registration | Location De-registration is a process that may be used to make a WTM user temporarily unavailable, e.g., when the WTM user is unable to use the WTM service. Having invoked this service, an incoming call to the WTM user can be informed that the call can not be delivered to the called WTM user. The Location-De-registrati... |
db2cdb5dce32777910df5b2264c2eca0 | 101 794 | 4.2 Call handling functions | |
db2cdb5dce32777910df5b2264c2eca0 | 101 794 | 4.2.1 WTM Incoming call (WTMI) | Incoming call handling allows calls to be routed to the called WTM user's registered location area based on the WTM user’s PISN address. This address may be its PISN number or a globally unique identity, e.g., an E.164 [31] number (ITU-T Recommendation E.164 [31]) In the single PISN scenario case it is recommended to u... |
db2cdb5dce32777910df5b2264c2eca0 | 101 794 | 4.2.2 WTM Outgoing call (WTMO) | Outgoing call handling is a capability provided to a WTM user in order to initiate calls from its current location area. Preferably outgoing calls should be set up by use of the home PINX's dialling plan. Service validation, either at the visited location or by the home PINX, should be possible in order to verify that ... |
db2cdb5dce32777910df5b2264c2eca0 | 101 794 | 4.2.3 WTM Handover (WTH) | Handover is a service that is intended to maintain an active call as the terminal moves within the limits of radio coverage, available network resources and access rights. Due to the complexity of this service it is recommended to develop the standards in three steps. The first step was to write a standard for handover... |
db2cdb5dce32777910df5b2264c2eca0 | 101 794 | 4.2.4 Emergency call | The Emergency call service is intended to allow WTM user, without access rights, to call a predefined emergency number via any compatible radio access. As a part of this service, the network should remember the WTM user’s identity and the address of the radio base station used to access the service. These types of call... |
db2cdb5dce32777910df5b2264c2eca0 | 101 794 | 4.3 Security functions | Any radio based system is, by nature, vulnerable to unauthorized use or eavesdropping. This fact requires development of various security mechanisms both at the radio side as well as in the network. However, the present document is limited to those problems that are directly related to the radio link itself, see 4.3.1,... |
db2cdb5dce32777910df5b2264c2eca0 | 101 794 | 4.3.1 Authentication of WTM users (WTAT) | Authentication of WTM users is a security mechanism activated by the telecommunication network in order to validate the identity provided by the WTM user. It should be possible to invoke wireless terminal authentication at any time (e.g., for outgoing call, incoming call, handover request, etc.). Table 14A: Standards f... |
db2cdb5dce32777910df5b2264c2eca0 | 101 794 | 4.3.2 Authentication of the telecommunication network (WTAN) | Authentication of the telecommunication network is a security mechanism activated by the WTM user in order to validate the identity of the network in order to avoid the terminal to log on a wrong network and/or revealing confidential information. WTAN should be possible to invoke at any time (e.g., for location registr... |
db2cdb5dce32777910df5b2264c2eca0 | 101 794 | 4.3.3 Encryption of user data and signalling information | Encryption is a security mechanism by which the WTM user’s data and signalling information is encrypted over the air interface in order to protect them from eavesdropping. Such functions should be provided by the relevant radio technologies. If not, the use of the particular radio system for the WTM service is not reco... |
db2cdb5dce32777910df5b2264c2eca0 | 101 794 | 4.4 Access to supplementary services for roaming WTM users | |
db2cdb5dce32777910df5b2264c2eca0 | 101 794 | 4.4.1 General | Any user in a PISN may choose to use either a fixed terminal or a Wireless terminal in order to access his or her telecommunication services. There should also be possible to use both types of terminals with the same PISN number without changes in the available services or user procedures. However, this may not always ... |
db2cdb5dce32777910df5b2264c2eca0 | 101 794 | 4.4.2 Service Profile Transfer | Transfer of Service Profile to the visited location is a supplementary services that transfer the WTM user’s service details from the WTM user's home PINX to the visited node/network. If the visitor exchange requires access to the service profile one possibility is to send the information, in part or as a whole, to the... |
db2cdb5dce32777910df5b2264c2eca0 | 101 794 | 4.4.3 Signalling enquiry | This supplementary service allows the visited network to request additional instructions from the WTM user’s home network if the visited network is unable to process an action related to the visiting WTM user. Table 22: Signalling enquiry standards for the single PISN scenario Standards organization Stage 1 Stage 2 Sta... |
db2cdb5dce32777910df5b2264c2eca0 | 101 794 | 4.4.4 Remote access | This service enables incoming and outgoing calls to or from the WTM user, and user initiated commands, to be routed via the WTM user’s home PINX. In this way the service logic can be provided by the WTM user’s home PINX. Consequently the WTM user will experience a consistent man-machine interface in accordance with the... |
db2cdb5dce32777910df5b2264c2eca0 | 101 794 | 4.4.5 Predefined service profiles | Another alternative to support access to the user's range of services, at the visited location, is to provide fixed, network-defined sets of service capabilities. In this case, the transmitted service profile is just a number that identifies which fixed set of capabilities that applies to the WTM user. The profile may ... |
db2cdb5dce32777910df5b2264c2eca0 | 101 794 | 4.4.6 User management of service profiles | |
db2cdb5dce32777910df5b2264c2eca0 | 101 794 | 4.4.6.1 Service profile interrogation | This feature allows the WTM user to interrogate the information stored in the WTM user’s service profile. This service may be offered with or without the ability of Service profile modification. ETSI ETSI TR 101 794 V1.1.1 (2000-03) 25 Table 28: WTM Service Profile interrogation standards for the single PISN scenario S... |
db2cdb5dce32777910df5b2264c2eca0 | 101 794 | 4.4.6.2 Service profile modification | Service profile modification allows a WTM user to remotely access and modify the user-controlled part of the service profile. If supported, this service should be offered together with Service profile interrogation. Table 30: WTM Service Profile modification standards for the single PISN scenario Standards organization... |
db2cdb5dce32777910df5b2264c2eca0 | 101 794 | 4.5 Recommended new WTM specific supplementary services | |
db2cdb5dce32777910df5b2264c2eca0 | 101 794 | 4.5.1 Call Completion - WTM user Not Reachable (CCNRc) | This is a service that, if the cordless terminal can not be reached e.g., because the terminal is outside radio coverage, turned off, detached, de-registered, etc., reestablishes the path between the calling user and the called WTM user whenever the called WTM makes its location known to the network again. The new loca... |
db2cdb5dce32777910df5b2264c2eca0 | 101 794 | 4.5.2 Call Forwarding - WTM user Not Reachable (CFNRc) | This is a service that, if the cordless terminal can not be reached e.g., because the terminal is outside radio coverage, turned off, detached, de-registered, etc., routes incoming WTM calls to an answering position determined by the user (e.g. home telephone, answering machine, etc.). This service should not be invoke... |
db2cdb5dce32777910df5b2264c2eca0 | 101 794 | 4.5.3 WTM Message Waiting | This service may be used to inform WTM users about unread messages, e.g., as a part of the location registration process, that messages about calls routed to the CFNRc number are available at the specified message service centre. It is not intended to use this service to also transfer the message itself to the terminal... |
db2cdb5dce32777910df5b2264c2eca0 | 101 794 | 4.5.4 Over the Air subscription registration | Over the air subscription registration is a service that enables to exchange subscription details between the WTM user and the network over the air interface. The intended use of this service is to avoid taking the WTM terminal to a maintenance centre when/if the user's subscription needs to be modified or to initiate ... |
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