1、 ETSI EG 201 973-2 V1.2.1 (2005-03)ETSI Guide Access and Terminals (AT);Public Switched Telephone Network;Support of legacy terminalsby Broadband IP networks and equipment;Part 2: Analogue PSTN terminalsETSI ETSI EG 201 973-2 V1.2.1 (2005-03) 2 Reference REG/AT-040005-02 Keywords access, analogue, b
2、roadband, IP, multimedia, terminal, PSTN ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16 Siret N 348 623 562 00017 - NAF 742 C Association but non lucratif enregistre la Sous-Prfecture de Grasse (06) N 7803/88 Important notice Indivi
3、dual copies of the present document can be downloaded from: http:/www.etsi.org The present document may be made available in more than one electronic version or in print. In any case of existing or perceived difference in contents between such versions, the reference version is the Portable Document
4、 Format (PDF). In case of dispute, the reference shall be the printing on ETSI printers of the PDF version kept on a specific network drive within ETSI Secretariat. Users of the present document should be aware that the document may be subject to revision or change of status. Information on the curr
5、ent status of this and other ETSI documents is available at http:/portal.etsi.org/tb/status/status.asp If you find errors in the present document, please send your comment to one of the following services: http:/portal.etsi.org/chaircor/ETSI_support.asp Copyright Notification No part may be reproduc
6、ed except as authorized by written permission. The copyright and the foregoing restriction extend to reproduction in all media. European Telecommunications Standards Institute 2005. All rights reserved. DECTTM, PLUGTESTSTM and UMTSTM are Trade Marks of ETSI registered for the benefit of its Members.
7、 TIPHONTMand the TIPHON logo are Trade Marks currently being registered by ETSI for the benefit of its Members. 3GPPTM is a Trade Mark of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. ETSI ETSI EG 201 973-2 V1.2.1 (2005-03) 3 Contents Intellectual Property R
8、ights5 Foreword.5 1 Scope 6 2 References 6 3 Definitions and abbreviations.8 3.1 Definitions8 3.2 Abbreviations .9 4 Overview 11 4.1 Principles for the Analogue presentation of the PSTN.11 5 Features and Functionality Summary.11 5.1 Summary of basic features of analogue PSTN terminal equipment .11 5
9、.2 Basic network functions .13 5.3 Enhanced network functions 13 6 Network Tones .17 6.1 General .17 6.2 Basic Network Tones .19 6.2.1 Dial Tone 19 6.2.2 Busy Tone.19 6.2.3 Ringing Tone 19 6.2.4 Release Tone.19 6.3 Additional Tones 19 6.3.1 Special Dial Tones19 6.3.1.1 Secondary Dial Tone.19 6.3.1.2
10、 Special (Intermittent or Stutter) Dial Tone19 6.3.2 Special Information Tone .19 6.3.3 Congestion Tone.20 6.3.4 Call Waiting Tone.20 7 Ringing.20 7.1 General .20 7.2 Basic Ringing Signals 20 7.3 Additional Ringing Signals 20 8 Dialling.20 8.1 DTMF Dialling.20 8.2 Loop Disconnect (Pulse) Dialling 21
11、 8.3 Other Dialling Systems 21 9 Supplementary Services .21 9.1 General .21 9.2 Signalling mechanisms supporting Supplementary Services .22 9.2.1 General22 9.2.2 DTMF signalling 22 9.2.3 Register Recall (RR).23 9.2.4 Additional signalling in the loop state 23 9.2.5 Signalling in the quiescent state2
12、3 9.2.6 Distinctive Ringing.23 9.2.7 Additional Supervisory Tones from the Network.23 9.2.8 Polarity Reversal.23 9.2.9 Short Message Service (SMS) 24 10 Presentation of Network Termination Point.24 Annex A (informative): Network Tones .25 ETSI ETSI EG 201 973-2 V1.2.1 (2005-03) 4 A.1 Basic Analogue
13、Network Tones.25 A.1.1 Dial Tone25 A.1.2 Busy Tone 25 A.1.3 Ringing Tone26 A.1.4 Release Tone 26 A.2 Additional Tones27 A.2.1 Special Dial Tones27 A.2.1.1 Secondary Dial Tone 27 A.2.1.2 Special (Intermittent or Stutter) Dial Tone .27 A.2.2 Special Information Tone.28 A.2.3 Congestion Tone 28 A.2.4 C
14、all Waiting Tone 28 Annex B (informative): Basic Call Information Flows .29 B.1 Purpose.29 B.2 Explanation of Basic Call Information Flows29 B.2.1 Detection of loop state by the NTE 29 B.2.2 Handling of supervisory tones by the NTE 29 B.2.3 Detection of Dial Tone by the TE 29 B.2.4 Handling of diall
15、ed digits by NTE .29 B.2.5 Detection of call progress tones by the TE.29 B.2.6 Generation of Ringing Signal by the NTE .30 B.2.7 Detection of Ringing signal30 B.2.8 Detection of on-hook state by the NTE30 B.2.9 Generation of clearing signal by the NTE 30 B.2.10 Detection of clearing signal by the TE
16、 .30 B.2.11 No Answer Time Out .30 B.2.12 Handling modem and facsimile transmission by NTE .30 Annex C (informative): Bibliography.34 History 35 ETSI ETSI EG 201 973-2 V1.2.1 (2005-03) 5 Intellectual Property Rights IPRs essential or potentially essential to the present document may have been declar
17、ed to ETSI. The information pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found in ETSI SR 000 314: “Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respect of ETSI standards“, which i
18、s available from the ETSI Secretariat. Latest updates are available on the ETSI Web server (http:/webapp.etsi.org/IPR/home.asp). Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not re
19、ferenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become, essential to the present document. Foreword This ETSI Guide (EG) has been produced by ETSI Technical Committee Access and Terminals (AT). The present document is part 2 of a multi-part deliverabl
20、e. Full details of the entire series can be found in part 1 33. ETSI ETSI EG 201 973-2 V1.2.1 (2005-03) 6 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 netwo
21、rks and equipment (e.g. IPCablecom MTA, FWA subscriber units) that support an analogue PSTN terminal. The present document does not include any Safety or EMC aspects or requirements. 2 References The following documents contain provisions which, through reference in this text, constitute provisions
22、of the present document. References are either specific (identified by date of publication and/or edition number or version number) or non-specific. For a specific reference, subsequent revisions do not apply. For a non-specific reference, the latest version applies. Referenced documents which are n
23、ot found to be publicly available in the expected location might be found at http:/docbox.etsi.org/Reference. 1 ETSI EG 201 121: “A guide to the application of TBR 21“. 2 ETSI EG 201 188: “Public Switched Telephone Network (PSTN); Network Termination Point (NTP) analogue interface; Specification of
24、physical and electrical characteristics at a 2-wire analogue presented NTP for short to medium length loop applications“. 3 ETSI ES 201 970: “Access and Terminals (AT); Public Switched Telephone Network (PSTN); Harmonized specification of physical and electrical characteristics at a 2-wire analogue
25、presented Network Termination Point (NTP)“. 4 ETSI TR 101 182: “Analogue Terminals and Access (ATA); Definitions, abbreviations and symbols“. 5 ETSI TR 101 183: “Public Switched Telephone Network (PSTN); Analogue ringing signals“. 6 ETSI TR 101 768: “Public Switched Telephone Network (PSTN); Study o
26、n the generation of analogue ringing signals“. 7 ETSI TR 103 000-1: “Access and Terminals (AT); Analogue Access to Public Telephone Network; Advisory Notes to Standards Harmonizing Terminal Interface; Part 1: List of all Advisory Notes“. 8 ETSI EN 300 659-1: “Access and Terminals (AT); Analogue acce
27、ss to the Public Switched Telephone Network (PSTN); Subscriber line protocol over the local loop for display (and related) services; Part 1: On-hook data transmission“. 9 ETSI EN 300 659-2: “Access and Terminals (AT); Analogue access to the Public Switched Telephone Network (PSTN); Subscriber line p
28、rotocol over the local loop for display (and related) services; Part 2: Off-hook data transmission“. 10 ETSI ES 200 659-3: “Access and Terminals (AT); Analogue acces to the Public Switched Telephone Network (PSTN); Subscriber line protocol over the local loop for display (and related) services; Part
29、 3: Data link message and parameter codings“. 11 ETSI ES 200 778-1: “Access and Terminals (AT); Analogue access to the Public Switched Telephone Network (PSTN); Protocol over the local loop for display and related services; Terminal equipment requirements; Part 1: On-hook data transmission“. ETSI ET
30、SI EG 201 973-2 V1.2.1 (2005-03) 7 12 ETSI ES 200 778-2: “Access and Terminals (AT); Analogue access to the Public Switched Telephone Network (PSTN); Protocol over the local loop for display and related services; Terminal equipment requirements; Part 2: Off-hook data transmission“. 13 ETSI ES 201 18
31、7: “2-wire analogue voice band interfaces; Loop Disconnect (LD) dialling specific requirements“. 14 ETSI ES 201 235-1: “Specification of Dual Tone Multi-Frequency (DTMF) Transmitters and Receivers; Part 1: General“. 15 ETSI ES 201 235-2: “Access and Terminals (AT); Specification of Dual-Tone Multi-F
32、requency (DTMF) Transmitters and Receivers; Part 2: Transmitters“. 16 ETSI ES 201 235-3: “Access and Terminals (AT); Specification of Dual-Tone Multi-Frequency (DTMF) Transmitters and Receivers; Part 3: Receivers“. 17 ETSI ES 201 235-4: “Access and Terminals (AT); Specification of Dual-Tone Multi-Fr
33、equency (DTMF) Transmitters and Receivers; Part 4: Transmitters and Receivers for use in Terminal Equipment for end-to-end signalling“. 18 ETSI TR 101 959: “Access and Terminals (AT); Ringing without DC for Terminal Equipment (TE), Terminal Support Interfaces (TSI) and Local Exchange Interfaces (LEI
34、)“. 19 ETSI TBR 021: “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 Mu
35、lti Frequency (DTMF) signalling“. 20 ITU-T Recommendation G.165: “Echo cancellers“. 21 ITU-T Recommendation G.168: “Digital network echo cancellers“. 22 ITU-T Recommendation G.711: “Pulse code modulation (PCM) of voice frequencies“. 23 ITU-T Recommendation G.723.1: “Speech coders: Dual rate speech c
36、oder for multimedia communications transmitting at 5,3 and 6,3 kbit/s“. 24 ITU-T Recommendation G.729: “Coding of speech at 8 kbit/s using conjugate-structure algebraic-code-excited linear-prediction (CS-ACELP)“. 25 ITU-T Recommendation T.30: “Procedures for document facsimile transmission in the ge
37、neral switched telephone network“. 26 ITU-T Recommendation T.38: “Procedures for real-time Group 3 facsimile communication over IP networks“. 27 IETF RFC 2833: “RTP Payload for DTMF Digits, Telephony Tones and Telephony Signals“. 28 ETSI EN 300 001: “Attachments to the Public Switched Telephone Netw
38、ork (PSTN); General technical requirements for equipment connected to an analogue subscriber interface in the PSTN“. 29 ETSI ES 201 729: “Public Switched Telephone Network (PSTN); 2-wire analogue voice band switched interfaces; Timed break recall (register recall); Specific requirements for terminal
39、s“. 30 ETSI TR 101 041-2: “Human Factors (HF); European harmonization of network generated tones; Part 2: Listing and analysis of European, World and Standardized tones“. 31 ETSI ES 201 912: “Access and Terminals (AT); Short Message Service (SMS) for PSTN/ISDN; Short Message Communication between a
40、fixed network Short Message Terminal Equipment and a Short Message Service Centre“. 32 ETSI ETS 300 085: “Integrated Services Digital Network (ISDN); 3,1 kHz telephony teleservice; Attachment requirements for handset terminals (Candidate NET 33)“. ETSI ETSI EG 201 973-2 V1.2.1 (2005-03) 8 33 ETSI EG
41、 201 973-1: “Access and Terminals (AT); Public Switched Telephone Network; Support of legacy terminals by Broadband IP networks and equipment; Part 1: General (common part covering both PSTN Analogue and ISDN TE)“. 34 ITU-T Recommendation V.18: “Operational and interworking requirements for DCEs ope
42、rating in the text telephone mode“. 35 ETSI TBR 038: “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“
43、. 36 ETSI EN 301 437: “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
44、(DTMF) signalling“. 37 IETF RFC 3550: “RTP: A Transport Protocol for Real-Time Applications“. 3 Definitions and abbreviations 3.1 Definitions For the purposes of the present document, the terms and definitions given in TR 101 182 4 and the following apply: distinctive ringing: special ringing patter
45、ns 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 101 183 5. idle line signalling state: state into which the TE when connected to the network, is placed such that it is capable of receiving or s
46、ending speechband signalling without entering the loop state loop state: state where the TE draws sufficient DC current to activate the exchange NOTE: The Loop state is also known as the on-line state or the off-hook state. See TBR 021 19. loop steady state: loop state excluding the transitions from
47、 and to quiescent state NOTE: See TBR 021 19. off-hook: See loop state. on-hook: See quiescent 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 quiescent state: state wh
48、ere the TE draws insufficient DC current to activate the exchange NOTE 1: The Quiescent state is also known as the idle state, off-line state or the on-hook state. NOTE 2: See TBR 021 19. quiescent steady state: quiescent state excluding the transitions from and to quiescent state Register Recall si
49、gnal (RR): signal sent from the TE to the telephone network during the communication phase of a call requesting the connection of a dialling detector release: transition from loop to quiescent state NOTE: It includes the time slot from the end of loop steady state to the begin of quiescent steady state. ETSI ETSI EG 201 973-2 V1.2.1 (2005-03) 9 repeat call attempt: further call attempt to the same network address resulting from a failure to establish connection during the previous call a
