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9db1a96739cb4e4d8cb2fa0f6ac750eb | 102 024-1 | 5.2 Reference connection for TIPHON scenario #1 | SCN Call initiated from IP Network to SCN IP Network IP Access TIPHON Terminal IWF Figure 6: Scenario 1 - Call from IP Network to SCN |
9db1a96739cb4e4d8cb2fa0f6ac750eb | 102 024-1 | 5.3 Reference connection for TIPHON scenario #2 | SCN Call initiated from SCN to IP Network IWF IP Network IP Access TIPHON Terminal Figure 7: Scenario 2 - Call from SCN to IP Network ETSI ETSI TR 102 024-1 V4.1.1 (2003-09) 16 |
9db1a96739cb4e4d8cb2fa0f6ac750eb | 102 024-1 | 5.4 Reference connection for TIPHON scenario #3 | SCN SCN IP Network IWF IWF IWF Figure 8: Scenario 3 - SCN to SCN over IP network |
9db1a96739cb4e4d8cb2fa0f6ac750eb | 102 024-1 | 5.5 Reference connection for TIPHON scenario #4 | IP Network SCN IP Network IP Access IP Access IWF IWF TIPHON Terminal TIPHON Terminal Figure 9: Scenario 4 - IP network to IP network over SCN ETSI ETSI TR 102 024-1 V4.1.1 (2003-09) 17 |
9db1a96739cb4e4d8cb2fa0f6ac750eb | 102 024-1 | 5.6 Reference model for a single transport domain | Figure 10: Reference model for a single transport domain |
9db1a96739cb4e4d8cb2fa0f6ac750eb | 102 024-1 | 5.7 Generic reference connection for TIPHON scenarios | Figure 11: Generic reference connection for TIPHON scenarios ETSI ETSI TR 102 024-1 V4.1.1 (2003-09) 18 Annex A (informative): Bibliography ETSI TS 102 025 series: TIPHON Release 5 QoS documents. ETSI ETSI TR 102 024-1 V4.1.1 (2003-09) 19 History Document history V1.2.5 October 1998 Publication as TR 101 329 (Historica... |
3b3de229ca53c3f2333a4b2db2b9555d | 102 016 | 1 Scope | The present document gives guidance on potential solutions to support the tranmission of Point-to-Point Protocol (PPP) packets over the D channel of an ISDN access without the need of an X.25 virtual circuit as used and defined in the Always On/Dynamic ISDN (AO/DI) [1] networking service. |
3b3de229ca53c3f2333a4b2db2b9555d | 102 016 | 2 References | For the purposes of this Technical Report, the following references apply: [1] IETF, PPP extensions, draft-ietf-pppext-aodi-02: "Always On/Dynamic ISDN (AO/DI)" (http://www.ietf.org/proceedings/00jul/I-D/pppext-aodi-02.txt) [2] IETF, RFC1548: "The Point-to-Point Protocol (PPP)". [3] IETF, RFC1990: "The PPP Multilink Pr... |
3b3de229ca53c3f2333a4b2db2b9555d | 102 016 | 3 Definitions and abbreviations | |
3b3de229ca53c3f2333a4b2db2b9555d | 102 016 | 3.1 Definitions | For the purposes of the present document, the following term and definition applies: Always On/Dynamic ISDN (AO/DI): networking service that provides an always-available connection to TCP/IP based services |
3b3de229ca53c3f2333a4b2db2b9555d | 102 016 | 3.2 Abbreviations | For the purposes of the present document, the following abbreviations apply: AO/DI Always On/Dynamic ISDN IETF Internet Engineering Task Force IP Internet Protocol ISDN Integrated Services Digital Network LAPD Link Access Protocol on channel D LCP Link Control Protocol MP Multilink Protocol MPoLAPD Multilink Protocol o... |
3b3de229ca53c3f2333a4b2db2b9555d | 102 016 | 4 Description | AO/DI [1] is a networking service that provides an always-available connection to TCP/IP based services. This service is provided to ISDN subscribers; an ISDN D channel permanent logical link is established between the subscriber and a packet handler, a X.25 virtual circuit is then established between the subscriber an... |
3b3de229ca53c3f2333a4b2db2b9555d | 102 016 | 5 LAPD restrictions | Whereas fragmentation exists at X.25 level, using bit M (More), there is no such mechanism within LAPD. As specified by ITU-T Recommendation Q.921 [4], the maximum number of octets in the information field is 260, thus the internet packets shall fit into these 260 octets. The LAPD address and control fields pair shall ... |
3b3de229ca53c3f2333a4b2db2b9555d | 102 016 | 6 PPP over LAPD (PPPoLAPD) | The length of a PPP frame is fixed by parameter Maximum Receive Unit (MRU) which is negotiated at the beginning of any PPP session, during the first negotiation phase using the Link Control Protocol (LCP). There are three basic phases of negotiation: Link Control Protocol (LCP) negotiation, Authentication & Link Qualit... |
3b3de229ca53c3f2333a4b2db2b9555d | 102 016 | 7 MP over LAPD (MPoLAPD) | A second solution to implement internet protocols over LAPD of an ISDN access is to use the PPP Multilink Protocol (MP) [1]. MP specifies a means to negotiate MP mode, detect the establishment of new links (termed bundling), detect fragment loss, and fragment and reassemble messages. MP does not specify when (or even i... |
3b3de229ca53c3f2333a4b2db2b9555d | 102 016 | 8 Conclusion | Two solutions are available to transfer internet protocols over the LAPD of an ISDN access: • Point-to-point Protocol over LAPD (PPPoLAPD); • PPP Multilink protocol over LAPD (MPoLAPD). The main difference between these two solutions resides at the IP level. PPPoLAPD limits the size of an IP datagram to 258 octets wher... |
28caa408552b0c1c4c0d3f1cf1bb9783 | 101 973-3 | 1 Scope | The present document describes the functional technical characteristics supported by PSTNs across the wider European market, in order to provide guidance to developers of broadband networks and equipment (e.g. IPCablecom embedded MTA, FWA subscriber units) that support an ISDN terminal. The present document does not in... |
28caa408552b0c1c4c0d3f1cf1bb9783 | 101 973-3 | 2 References | For the purposes of this Technical Report (TR) the following references apply: [1] ETSI TBR 003/A1 (Edition 1): "Integrated Services Digital Network (ISDN); Attachment requirements for terminal equipment to connect to an ISDN using ISDN basic access". [2] ETSI TBR 004/A1 (Edition 1): "Integrated Services Digital Networ... |
28caa408552b0c1c4c0d3f1cf1bb9783 | 101 973-3 | 3 Definitions and abbreviations | |
28caa408552b0c1c4c0d3f1cf1bb9783 | 101 973-3 | 3.1 Definitions | For the purposes of the present document, the following terms and definitions apply: basic access: user-network access arrangement that corresponds to the interface structure composed of two B-channels and one D-channel NOTE: The bit rate of the D-channel for this type of access is 16 kbit/s (ITU-T Recommendation I.430... |
28caa408552b0c1c4c0d3f1cf1bb9783 | 101 973-3 | 3.2 Abbreviations | For the purposes of the present document, the following abbreviations apply: 3PTY Three Party Service ACC Account Card Calling ACCS Automatic Credit Card Service ACR Anonymous Call Rejection AOC Advice of Charge AOC-D Advice of Charge, Charging Information During the Call AOC-E Advice of Charge, Charging Information at... |
28caa408552b0c1c4c0d3f1cf1bb9783 | 101 973-3 | 4 Overview | The Telecommunications industry in Europe and surrounding regions has started to deploy broadband IP access networks using both wired and wireless access technologies (sometimes referred to as Next Generation Networks (NGN)). The initial rollout of these Broadband networks has been focussed on supporting both data and ... |
28caa408552b0c1c4c0d3f1cf1bb9783 | 101 973-3 | 4.1 Principles for the ISDN presentation of the PSTN | Although the presentation of national public switched telephone networks has evolved over an extended period, much effort within ETSI TC Access and Terminals and its predecessors (EP DTA and STC TE4 and STC TE5) has brought about a massive reduction in the presentation of technical differences between the networks. The... |
28caa408552b0c1c4c0d3f1cf1bb9783 | 101 973-3 | 5 Features and functionality summary | 5.1 Summary of basic features of ISDN terminal and network equipment Table 1 lists the basic features of ISDN TE or NT and how they are implemented. Table 1: Basic features supported by ISDN terminal and network equipment Implementation by TE Related standards Comments Call establishment at the originating interface EN... |
28caa408552b0c1c4c0d3f1cf1bb9783 | 101 973-3 | 5.2 Enhanced network functions | In some cases, Enhanced network functions (e.g. supplementary services and SMS) will require a variety of additional signalling arrangements beyond those necessary for a basic call. Table 2 describes possible technical solutions for the implementation of a variety of supplementary services and other enhanced network fu... |
28caa408552b0c1c4c0d3f1cf1bb9783 | 101 973-3 | 6 Call States | |
28caa408552b0c1c4c0d3f1cf1bb9783 | 101 973-3 | 6.1 General | In this report the terms "incoming" and "outgoing" are used to describe the call as viewed by the user side of the interface. In the paragraphs which follow states are defined for circuit switched calls in clauses 6.2 and 6.3 and for the interface in clause 6.4. These clauses define the basic call control states that i... |
28caa408552b0c1c4c0d3f1cf1bb9783 | 101 973-3 | 6.2 Call states at the user side of the interface | The states which may exist on the user side of the user-network interface are defined in this clause. |
28caa408552b0c1c4c0d3f1cf1bb9783 | 101 973-3 | 6.2.1 Null state (U0) | No call exists. |
28caa408552b0c1c4c0d3f1cf1bb9783 | 101 973-3 | 6.2.2 Call initiated (U1) | This state exists for an outgoing call, when the user requests call establishment from the network. |
28caa408552b0c1c4c0d3f1cf1bb9783 | 101 973-3 | 6.2.3 Overlap sending (U2) | This state exists for an outgoing call when the user has received acknowledgement of the call establishment request which permits the user to send additional call information to the network in overlap mode. |
28caa408552b0c1c4c0d3f1cf1bb9783 | 101 973-3 | 6.2.4 Outgoing call proceeding (U3) | This state exists for an outgoing call when the user has received acknowledgement that the network has received all call information necessary to effect call establishment. |
28caa408552b0c1c4c0d3f1cf1bb9783 | 101 973-3 | 6.2.5 Call delivered (U4) | This state exists for an outgoing call, when the calling user has received an indication that remote user alerting has been initiated. |
28caa408552b0c1c4c0d3f1cf1bb9783 | 101 973-3 | 6.2.6 Call present (U6) | This state exists for an incoming call when the user has received a call establishment request but has not yet responded. |
28caa408552b0c1c4c0d3f1cf1bb9783 | 101 973-3 | 6.2.7 Call received (U7) | This state exists for an incoming call when the user has indicated alerting but has not yet answered. |
28caa408552b0c1c4c0d3f1cf1bb9783 | 101 973-3 | 6.2.8 Connect request (U8) | This state exists for an incoming call when the user has answered the call and is waiting to be awarded the call. ETSI ETSI TR 101 973-3 V1.1.1 (2003-03) 20 |
28caa408552b0c1c4c0d3f1cf1bb9783 | 101 973-3 | 6.2.9 Incoming call proceeding (U9) | This state exists for an incoming call when the user has sent acknowledgement that the user has received all call information necessary to effect call establishment. |
28caa408552b0c1c4c0d3f1cf1bb9783 | 101 973-3 | 6.2.10 Active (U10) | This state exists for an incoming call when the user has received an acknowledgement from the network that the user has been awarded the call. This state exists for an outgoing call when the user has received an indication that the remote user has answered the call. |
28caa408552b0c1c4c0d3f1cf1bb9783 | 101 973-3 | 6.2.11 Disconnect request (U11) | This state exists when the user has requested the network to clear the end-to-end connection (if any) and is waiting for a response. |
28caa408552b0c1c4c0d3f1cf1bb9783 | 101 973-3 | 6.2.12 Disconnect indication (U12) | This state exists when the user has received an invitation to disconnect because the network has disconnected the end- to-end connection (if any). |
28caa408552b0c1c4c0d3f1cf1bb9783 | 101 973-3 | 6.2.13 Suspend request (U15) | This state exists when the user has requested the network to suspend the call and is waiting for a response. |
28caa408552b0c1c4c0d3f1cf1bb9783 | 101 973-3 | 6.2.14 Resume request (U17) | This state exists when the user has requested the network to resume a previously suspended call and is waiting for a response. |
28caa408552b0c1c4c0d3f1cf1bb9783 | 101 973-3 | 6.2.15 Release request (U19) | This state exists when the user has requested the network to release and is waiting for a response. |
28caa408552b0c1c4c0d3f1cf1bb9783 | 101 973-3 | 6.2.16 Overlap receiving (U25) | This state exists for an incoming call when the user has acknowledged the call establishment request from the network and is prepared to receive additional call information (if any) in overlap mode. |
28caa408552b0c1c4c0d3f1cf1bb9783 | 101 973-3 | 6.3 Call states at the network side of the interface | The states which may exist on the network side of the user-network interface are defined in this clause. |
28caa408552b0c1c4c0d3f1cf1bb9783 | 101 973-3 | 6.3.1 Null state (N0) | No call exists. |
28caa408552b0c1c4c0d3f1cf1bb9783 | 101 973-3 | 6.3.2 Call initiated (N1) | This state exists for an outgoing call when the network has received a call establishment request but has not yet responded. |
28caa408552b0c1c4c0d3f1cf1bb9783 | 101 973-3 | 6.3.3 Overlap sending (N2) | This state exists for an outgoing call when the network has acknowledged the call establishment request and is prepared to receive additional call information (if any) in overlap mode. ETSI ETSI TR 101 973-3 V1.1.1 (2003-03) 21 |
28caa408552b0c1c4c0d3f1cf1bb9783 | 101 973-3 | 6.3.4 Outgoing call proceeding (N3) | This state exists for an outgoing call when the network has sent acknowledgement that the network has received all call information necessary to effect call establishment. |
28caa408552b0c1c4c0d3f1cf1bb9783 | 101 973-3 | 6.3.5 Call delivered (N4) | This state exists for an outgoing call when the network has indicated that remote user alerting has been initiated. |
28caa408552b0c1c4c0d3f1cf1bb9783 | 101 973-3 | 6.3.6 Call present (N6) | This state exists for an incoming call when the network has sent a call establishment request but has not yet received a satisfactory response. |
28caa408552b0c1c4c0d3f1cf1bb9783 | 101 973-3 | 6.3.7 Call received (N7) | This state exists for an incoming call when the network has received an indication that the user is alerting but has not yet received an answer. |
28caa408552b0c1c4c0d3f1cf1bb9783 | 101 973-3 | 6.3.8 Connect request (N8) | This state exists for an incoming call when the network has received an answer but the network has not yet awarded the call. |
28caa408552b0c1c4c0d3f1cf1bb9783 | 101 973-3 | 6.3.9 Incoming call proceeding (N9) | This state exists for an incoming call when the network has received acknowledgement that the user has received all call information necessary to effect call establishment. |
28caa408552b0c1c4c0d3f1cf1bb9783 | 101 973-3 | 6.3.10 Active (N10) | This state exists for an incoming call when the network has awarded the call to the called user. This state exists for an outgoing call when the network has indicated that the remote user has answered the call. |
28caa408552b0c1c4c0d3f1cf1bb9783 | 101 973-3 | 6.3.11 Disconnect request (N11) | This state exists when the network has received a request from the user to clear the end-to-end connection (if any). |
28caa408552b0c1c4c0d3f1cf1bb9783 | 101 973-3 | 6.3.12 Disconnect indication (N12) | This state exists when the network has disconnected the end-to-end connection (if any) and has sent an invitation to disconnect the user-network connection. |
28caa408552b0c1c4c0d3f1cf1bb9783 | 101 973-3 | 6.3.13 Suspend request (N15) | This state exists when the network has received a request to suspend the call but has not yet responded. |
28caa408552b0c1c4c0d3f1cf1bb9783 | 101 973-3 | 6.3.14 Resume request (N17) | This state exists when the network has received a request to resume a previously suspended call but has not yet responded. |
28caa408552b0c1c4c0d3f1cf1bb9783 | 101 973-3 | 6.3.15 Release request (N19) | This state exists when the network has requested the user to release and is waiting for a response. ETSI ETSI TR 101 973-3 V1.1.1 (2003-03) 22 |
28caa408552b0c1c4c0d3f1cf1bb9783 | 101 973-3 | 6.3.16 Call abort (N22) | This state exists for an incoming call for the point-to-multipoint configuration when the call is being cleared before any user has been awarded the call. |
28caa408552b0c1c4c0d3f1cf1bb9783 | 101 973-3 | 6.3.17 Overlap receiving (N25) | This state exists for an incoming call when the network has received acknowledgement of the call establishment request |
28caa408552b0c1c4c0d3f1cf1bb9783 | 101 973-3 | 6.4 Call states associated with the global call reference | This clause defines the states that the protocol may adopt using the global call reference. There is only one global call reference per interface. |
28caa408552b0c1c4c0d3f1cf1bb9783 | 101 973-3 | 6.4.1 Call states at the user side of the interface | The states which may exist on the user side of the user-network interface are defined in this clause. |
28caa408552b0c1c4c0d3f1cf1bb9783 | 101 973-3 | 6.4.1.1 Null (Rest 0) | No transaction exists. |
28caa408552b0c1c4c0d3f1cf1bb9783 | 101 973-3 | 6.4.1.2 Restart request (Rest 1) | This state exists for a restart transaction when the user has sent a restart request but has not yet received an acknowledgement response from the network. |
28caa408552b0c1c4c0d3f1cf1bb9783 | 101 973-3 | 6.4.1.3 Restart (Rest 2) | This state exists when a request for a restart has been received from the network and responses have not yet been received from all locally active call references. |
28caa408552b0c1c4c0d3f1cf1bb9783 | 101 973-3 | 6.4.2 Call states at the network side of the interface | The states which may exist on the network side of the user-network interface are defined in this clause. |
28caa408552b0c1c4c0d3f1cf1bb9783 | 101 973-3 | 6.4.2.1 Null (Rest 0) | No transaction exists. |
28caa408552b0c1c4c0d3f1cf1bb9783 | 101 973-3 | 6.4.2.2 Restart request (Rest 1) | This state exists for a restart transaction when the network has sent a restart but has not yet received an acknowledgement response from the user. |
28caa408552b0c1c4c0d3f1cf1bb9783 | 101 973-3 | 6.4.2.3 Restart (Rest 2) | This state exists when a request for a restart has been received from the user and a response has not yet been received from all locally active call references. ETSI ETSI TR 101 973-3 V1.1.1 (2003-03) 23 |
28caa408552b0c1c4c0d3f1cf1bb9783 | 101 973-3 | 7 Supplementary Services | |
28caa408552b0c1c4c0d3f1cf1bb9783 | 101 973-3 | 7.1 General | A variety of signalling is required to support calling features such as: • Advice of Charge; • Completion of Calls to Busy Subscriber; • Call Waiting; • Cancel Call Waiting; • Call Forwarding (no-answer, busy, variable); • Three-way Calling (3PTY); • Voice mail Message Waiting Indicator; • Calling Line Identification P... |
28caa408552b0c1c4c0d3f1cf1bb9783 | 101 973-3 | 7.2 Signalling mechanisms supporting supplementary services | |
28caa408552b0c1c4c0d3f1cf1bb9783 | 101 973-3 | 7.2.1 General | Annex B provides a high level study into the interactions between the different supplementary services, together with the references for definition standards. |
28caa408552b0c1c4c0d3f1cf1bb9783 | 101 973-3 | 7.2.2 Short Message Service (SMS) | The ETSI SMS assumes that both the sending and receiving terminal equipment (TE) have appropriate capabilities to send, receive, store, display and delete short messages. The SMS can be realised in two ways: • either a User Based Solution (UBS) using the basic call procedures, or • a Network Based Solution (NBS). ETSI ... |
28caa408552b0c1c4c0d3f1cf1bb9783 | 101 973-3 | 8 Presentation of Network Termination Point | The recommended harmonized arrangement for the presentation of the NTP to ISDN TE is as a socket, as specified in TBR 003/A1 [1] for basic rate access and TBR 004/A1 [2] for primary rate access. ETSI ETSI TR 101 973-3 V1.1.1 (2003-03) 25 Annex A: Basic Call Information Flows This Annex describes basic call flows in the... |
7e5b32671f65f6457d40f06966f2fe94 | 101 973-2 | 1 Scope | The present document describes the functional technical characteristics supported by PSTNs across the wider European market, in order to provide guidance to developers of broadband networks and equipment (e.g. IPCablecom MTA, FWA subscriber units) that support an analogue PSTN terminal. The present document does not in... |
7e5b32671f65f6457d40f06966f2fe94 | 101 973-2 | 2 References | For the purposes of this Technical Report (TR) the following references apply: [1] ETSI 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)". [2] ETSI EG 201 121: "A guide to the applicat... |
7e5b32671f65f6457d40f06966f2fe94 | 101 973-2 | 3 Definitions and abbreviations | |
7e5b32671f65f6457d40f06966f2fe94 | 101 973-2 | 3.1 Definitions | For the purposes of the present document, the terms and definitions given in TR 101 182 [8] and the following apply: 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 NOTE: See TR 101 1... |
7e5b32671f65f6457d40f06966f2fe94 | 101 973-2 | 3.2 Abbreviations | For the purposes of the present document, the following abbreviations apply: 3PTY Three Party Service ACC Account Card Calling ACCS Automatic Credit Card Service ACR Anonymous Call Rejection AoC Advice of Charge AoC-E Advice of Charge, charging information at the End of the call CB Call Back CCBS Completion of Calls to... |
7e5b32671f65f6457d40f06966f2fe94 | 101 973-2 | 4 Overview | |
7e5b32671f65f6457d40f06966f2fe94 | 101 973-2 | 4.1 Principles for the Analogue presentation of the PSTN | Although the presentation of national public switched telephone networks has evolved over an extended period, much effort within ETSI TC Access and Terminals and its predecessors (EP ATA and STC TE4 and STC TE5) has brought about a massive reduction in the presentation of technical differences between the networks. The... |
7e5b32671f65f6457d40f06966f2fe94 | 101 973-2 | 5 Features and Functionality Summary | 5.1 Summary of basic features of analogue PSTN terminal equipment Table 1 lists the basic features of analogue TE and how they are implemented. Table 1: Basic features supported by analogue PSTN terminal equipment Feature Name Implementation by TE Related standards Comments Seize Off-hook d.c. conditions established TB... |
7e5b32671f65f6457d40f06966f2fe94 | 101 973-2 | 5.2 Basic network functions | Table 2 lists the essential network facilities/functions and identifies how they are supported by analogue NTE. Table 2: Basic Network functions supported by analogue PSTN NTE Function Name Implementation by NTE Related standards Comments Seize Detection of loop current ES 201 970 [6] Hold Detection of loop current ES ... |
7e5b32671f65f6457d40f06966f2fe94 | 101 973-2 | 5.3 Enhanced network functions | In some cases, Enhanced network functions (e.g. supplementary services and SMS) will require a variety of additional signalling arrangements beyond those necessary for a basic call. Table 3 describes possible technical solutions for the implementation of a variety of supplementary services and other enhanced network fu... |
7e5b32671f65f6457d40f06966f2fe94 | 101 973-2 | 6 Network Tones | |
7e5b32671f65f6457d40f06966f2fe94 | 101 973-2 | 6.1 General | When a user makes a telephone call, tones are a necessary part of the interaction between the network and the user in the process of setting up the call. The user of a simple telephone terminal only requires that the tones be presented at a suitable time and at a suitable level. This generally implies that when going o... |
7e5b32671f65f6457d40f06966f2fe94 | 101 973-2 | 6.2 Basic Network Tones | |
7e5b32671f65f6457d40f06966f2fe94 | 101 973-2 | 6.2.1 Dial Tone | Taking into consideration the harmonization of analogue TE throughout the European Union based upon TBR 021 [27], the recommended nominal cadences and frequency values for Dial Tone are those specified in ES 201 970 [6] and are shown in annex A: table A.1 under group A. |
7e5b32671f65f6457d40f06966f2fe94 | 101 973-2 | 6.2.2 Busy Tone | Taking into consideration the harmonization of analogue TE throughout the European Union based upon TBR 021 [27], the recommended values for Busy Tone are those specified in ES 201 970 [6] and are shown in annex A: table A.2 under group A. |
7e5b32671f65f6457d40f06966f2fe94 | 101 973-2 | 6.2.3 Ringing Tone | Taking into consideration the harmonization of analogue TE throughout the European Union based upon TBR 021 [27], the recommended values for Ringing Tone are those specified in ES 201 970 [6] and are shown in annex A: table A.3 under group A. |
7e5b32671f65f6457d40f06966f2fe94 | 101 973-2 | 6.2.4 Release Tone | Taking into consideration the harmonization of analogue TE throughout the European Union based upon TBR 021 [27], the recommended values for Release Tone are those specified in ES 201 970 [6] and are shown in annex A: table A.4 under group A. |
7e5b32671f65f6457d40f06966f2fe94 | 101 973-2 | 6.3 Additional Tones | Call Progress Indication is an expression preferred in the ISDN environment and is covered in this clause on additional Network Tones. |
7e5b32671f65f6457d40f06966f2fe94 | 101 973-2 | 6.3.1 Special Dial Tones | |
7e5b32671f65f6457d40f06966f2fe94 | 101 973-2 | 6.3.1.1 Secondary Dial Tone | Taking into consideration the harmonization of analogue TE throughout the European Union based upon TBR 021 [27], the recommended values for Secondary Dial Tone are those specified in ES 201 970 [6] and are shown in annex A: table A.5 under group A. |
7e5b32671f65f6457d40f06966f2fe94 | 101 973-2 | 6.3.1.2 Special (Intermittent or Stutter) Dial Tone | Taking into consideration the harmonization of analogue TE throughout the European Union based upon TBR 021 [27], the recommended values for Special Dial Tone are those specified in ES 201 970 [6] and are shown in annex A: table A.6 under group A. |
7e5b32671f65f6457d40f06966f2fe94 | 101 973-2 | 6.3.2 Special Information Tone | Taking into consideration the harmonization of analogue TE throughout the European Union based upon TBR 021 [27], the recommended values for Special Information Tone are those specified in ES 201 970 [6] and are shown in annex A: table A.7 under group A. ETSI ETSI TR 101 973-2 V1.1.1 (2002-12) 20 |
7e5b32671f65f6457d40f06966f2fe94 | 101 973-2 | 6.3.3 Congestion Tone | Taking into consideration the harmonization of analogue TE throughout the European Union based upon TBR 021 [27], the recommended values for Congestion Tone are those specified in ES 201 970 [6] and are shown in annex A: table A.8 under group A. |
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