ETSI EG 202 090-1999 Broadband Integrated Services Digital Network (B-ISDN) H 323 B-ISDN Signalling Interoperability《宽带综合业务数字网(B-ISDN) H 323 B-ISDN信令互操作性(版本1 1 2)》.pdf

1、STD-ETSI EG 202 OSO-ENGL 1799 3400855 0387743 954 II EG 202 O90 1.1.2 (1999-03) ETSf Guide Broadband Integrated Services Digital Network (B-ISDN); H.323/B-ISDN signalling interoperability STD-ETSI EG 202 090-ENGL 1999 M 3400855 0387744 890 I 2 EG 2M O90 V1.1.2 (1999-03) Reference DEG/SPS-O5173 (jcoO

2、Oide.PDF) Kevwords , - ATM, audio, B-ISDN, broadband, interoperability, IP, ISDN, multimedia, speech, video Postal address F-O6921 Sophia Antipolis Cedex - FRANCE Office address 650 Route des Lucioles - Sophia Antipolis Valbonne - FRANCE Siret No 348 623 562 00017 - NAF 742 C Assoaation but non lucr

3、atif enregistre la Sous-Prfecture de Grasse (06) No 78W88 Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16 Internet secretariat Q etsi .fr Individual copies of this ETSI deliverable can be downloaded from http:/w.etsi.org If you find errors in the present document, send your comment to: editoretsi.fr

4、Copyright Notification No part may be reproduced except as authorized by written permission. The copyright and the foregoing restriction extend to reproduction in all media. O European Telecommunications Standards Institute 1999. All rights reserved. ETSI STD-ETSI EG 202 090-ENGL It999 m 3400855 038

5、7745 727 W EG 202 O90 v1.1.2 (i 99903) 3 Contents Intellectual Property Rights . 6 Foreword 6 1 2 3 4 4.1 4.1.1 4.1.2 4.1.3 4.1.4 4.1.5 4.1.6 4.2 4.3 4.4 5 5.1 5.2 5.3 5.3.1 5.3.2 5.4 5.5 5.6 5.6.1 5.6.2 5.6.3 5.6.4 6 7 7.1 7.2 7.2.1 7.2.1.1 7.2.1.2 7.2.1.3 7.2.2 7.2.2.1 7.2.2.2 7.2.2.3 7.2.3 7.2.3.

6、1 7.3 7.4 1 ;cope 7 Ceferences . 7 4bbreviations . 9 ntroduction 10 Overview of H.323 and related recommendations . 10 H.323 concept and entities . 10 Channels defined in H.323 . 11 Protocols and related standards 11 Call procedures 12 Fast connect 13 Overview of modelling work relating to B-ISDN si

7、gnalling . 13 Inter-domain signalling 13 Overview of B-ISDN signalling . combined callhearer control 15 Overview of B-ISDN signalling . separated call and bearer control 15 Related work 16 ECMA TC32-TG15 and ETSI SPS5 WG5 16 ITU-T Study Group 16 17 ETSI project TIPHON . 17 Gateway functional decompo

8、sition 19 ATM Forum SAA/RMOA . 20 ECMA TC32-TG13 . 20 General . 17 ETF . 20 SIP 20 IPTEL . 20 E.164 Birds of a Feather activity 20 NAVDEC . 20 H.323 and modelling of B-ISDN signalling 20 H.323 interworking via a gateway with B-ISDN separated call and bearer control . 21 Scenarios 21 Protocol interwo

9、rking architecture . 23 Scenario 1. 23 Sub-scenario la . null sessionhesource control in B-ISDN - LAN-based H.323 environment 23 environment without H.323 annex C 24 environment 25 Scenario 2 . 25 based H.323 environment . 25 ATM-based H.323 environment without H.323 annex C . 26 H.323 annex C in H.

10、323 environment 27 Scenario 3 . 27 environment 27 Session control in B-ISDN environment 28 Resource control in B-ISDN environment . 28 Sub-scenario lb . null sessiodresource control in B-ISDN - IF-over-ATM-based H.323 Sub-scenario IC . null sessionhesource control in B-ISDN . use of H.323 annex C in

11、 H.323 Sub-scenario 2a . each environment operates own sessiodresource control protocols . LAN- Sub-scenario 2b . each environment operates own sessionhesource control protocols . IF-over- Sub-scenario 2c . each environment operates own sessiodresource control protocols - use of Sub-scenario 3c . en

12、d-to-end sessionhesource control protocols . use of H.323 annex C in H.323 ETSI STD-ETSI EG 202 090-ENGL L999 3400855 038774b bb3 = 7.5 7.6 7.7 7.7.1 7.7.2 7.7.3 7.8 7.8.1 7.8.2 7.8.3 7.8.4 7.8.5 7.9 7.10 7.10.1 7.10.2 7.10.3 7.10.4 7.10.5 7.1 1 7.12 4 EG 202 O90 V1.1.2 (1 999-03) Call establishment

13、 29 Bearer establishment 29 Addressing . 30 Addressing in H.323 . 30 Addressing in B-ISDN and B-PISN . 31 Address interworking between H.323 and B-ISDN . 31 Message sequences for basic communication establishment . 32 Scenarios la and lb 32 Scenario IC . 34 Scenarios 2a and 2b 35 Scenario 2c . 37 Sc

14、enario 3c . 39 Generic Functional Protocol 40 Supplementary services 40 Introduction 40 Supplementary services in scenario 1 . 41 Supplementary services in scenario 2 . 41 Supplementary services in scenario 3 . 41 Areas for further work 42 Conferencing 42 Impact of T.120 . 42 8 H.323 interworking vi

15、a a gateway with B-ISDN combined calihearer control . 42 8.1 8.2 8.2.1 8.2.1.1 8.2.1.2 8.2.1.3 8.2.2 8.2.2.1 8.2.2.2 8.2.2.3 8.2.3 8.2.3.1 8.3 8.4 8.5 8.6 8.7 8.7.1 8.7.2 8.7.3 8.7.4 8.7.5 8.8 8.9 8.10 8.11 Scenarios 43 Protocol interworking architecture . 45 Scenario 1 . 45 Sub-scenario la - null s

16、essiodresource control in B-ISDN - LAN-based H.323 environment 45 Sub-scenario lb - null sessiodresource control in B-ISDN - IP-over-ATM-based H.323 environment without H.323 annex C 45 Sub-scenario IC - null sessiodresource control in B-ISDN - use of H.323 annex C in H.323 environment 45 Scenario 2

17、 . 45 Sub-scenario 2a - each environment operates own sessiodresource control protocols - LAN- based H.323 environment . 46 Sub-scenario 2b - each environment operates own session/resource control protocols - Ip-over- ATM-based H.323 environment without H.323 annex C . 46 Sub-scenario 2c - each envi

18、ronment operates own sessiodresource control protocols - use of H.323 annex C in H.323 environment 46 Scenario 3 . 46 Sub-scenario 3c - end-to-end sessiodresource control protocols - use of H.323 annex C in H.323 environment 46 Session control in B-ISDN environment 47 Resource control in B-ISDN envi

19、ronment . 47 Callbearer establishment . 47 Addressing . 47 Message sequences for basic communication establishment . 48 Scenarios la and lb 48 Scenario IC . 49 Scenarios 2a and 2b 50 Scenario 2c . 52 Scenario 3c . 53 Supplementary services 54 Conferencing 54 Impact ofT.120 . 54 Generic functional pr

20、otocol . 53 9 Summary of interworking scenarios in 7 and 8 . 54 9.1 Scenario 1 54 Scenario 2 54 9.2 9.3 Scenario 3 55 ETSI STD.ETS1 EL ?OZ 090-ENGL L999 - 3400855 O387747 5TT EG 202 O90 V1.1.2 (1999-03) 5 1 O 11 11.1 11.2 11.2.1 11.2.1 * 1 11.2.1.2 11.2.2 11.2.3 11.2.3.1 11.2.3.2 1 1.2.4 1 1.2.5 12

21、13 13.1 Introduction . 59 13.2 Mobility concepts 59 13.3 Mobility architecture 60 13.4 Virtual Home Environment (VI%) 61 14 Bibliography 64 History 65 Application of B-ISDN separated protocols to gatekeeper-to-gatekeeper communication . 55 Connection of remote H.323 environments via B-ISDN . 55 Case

22、 1 . full interworking 56 Case 2 - tunnelling . 56 Scenario T1 - tunnelling of session and resource control protocols . 56 Scenario T1.l - tunnelling of session and resource control protocols through B-ISDN . 56 Scenario T1.2 - transmission of session and resource control protocols through IP networ

23、k, by- passing B-ISDN 57 Scenario T2 - tunnelling of session control protocol only 57 Scenario T3 - tunnelling of resource control protocol only 57 Scenario T3.1 - tunnelling of resource control protocol through B-ISDN 57 Scenario T3.2 - transmission of resource control protocol through P network, b

24、y-passing B-ISDN . 58 Additional considerations when endstations employ H.323 annex C (native IP network or IF over ATM network) . 58 Conclusions on tunnelling scenarios 58 Co-existence of H.323 annex C and B-ISDN signalling in the same network 59 Impact of H.323 on future mobility protocols . 59 Co

25、nclusions and recommendations . 62 ETSI STD-ETSI EG 202 090-ENGL 1979 3400855 0383748 436 6 EG 202 O90 V1.1.2 (199943) intellectual Property Rights IPRs essential or potentially essential to the present document may have been declared to ETSI. The information pertaining to these essential IFRs, if a

26、ny, is publicly available for ETSI members and non-members, and can be found in SR 000 3 14: Tntellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respect of ETSI standards”, which is available free of charge from the ETSI Secretanat. Latest updates are a

27、vailable on the ETSI Web server (http:/www.etsi.org/ipr). 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 referenced in SR 000 314 (or the updates on the ETSI Web server) which ar

28、e, or may be, or may become, essential to the present document. Foreword This ETSI Guide (EG) has been produced by ETSI Technical Committee Signalling Protocols and Switching (SPS). ETSf STD*ETSI EG 202 090-ENGL 3999 I 3400855 0387749 372 I 7 EG 202 O90 V1.1.2 (1999-03) 1 Scope The present document

29、is to investigate the interoperability of H.323 and B-ISDN signalling environments with a view to identifying possible standardization activities in this area. The following aspects of interoperability are investigated: 0 0 the interworking of H.323 and B-ISDN environments, both separated and combin

30、ed, via a gateway; the connection of remote H.323 environments via B-ISDN; the use of H.323 annex C (H.323 on ATM), including the Co-existence of H.323 annex C and B-ISDN signalling in the same network and possible future enhancement of annex C; the application of the B-ISDN separated call control p

31、rotocol to gatekeeper-to-gatekeeper communication; 0 the impact of H.323 on future mobility protocols. For each of the above, due consideration is given to the following: addressing impact (including use of IP addressing); conferencing models; T. 120 data impact; basic call procedures; generic funct

32、ional procedures (GFP) and supplementary services; end-to-end resource and session levei protocols. Possible future standardization activities resulting from the present document will include H.323 work items as well as B-ISDN signalling work items. 2 References The following documents contain provi

33、sions which, through reference in this text, constitute provisions of the present document. 0 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 ref

34、erence, 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. il I21 ECMA- 155 (1997): “Private Integrated Services Networks - Addressing“. ECMA-254 (1996): “B-PISN - Inter-Exchange Signalling Protoco

35、l - Generic Functional Protocol (B-QSIG-GF)“. ATM Forum P-NNI V1 .O (1996): “Private Network-Network Interface Specification Version 1.0 (af-pnni-0055 .ooO) “ . ATM Forum UNI 4.0 (1996): “ATM User-Network interface (UNI) Signalling Specification Version 4.0 (af-sig-0061.000)“. 131 141 151 Void. 61 T

36、R 101 300 (Vi. 1): “Telecommunications and Internet Protocol Harmonization Over Network (TIPHON); Description of technical issues“. TS 101 3 13: “Telecommunications and Internet Protocol Harmonization Over Networks (TIPHON); Network architecture and reference configurations; Scenario 2“. TS 101 324

37、(Vl.1): “Telecommunications and Internet Protocol Harmonization Over Networks (TIPHON); Naming and addressing; Scenario 1“. IETF RFC 1483 (1993): “Multiprotocol Encapsulation over ATM Adaptation Layer 5“. 71 SI I91 ETSI STD-ETSI EG 202 070-ENGL L777 3400855 0387750 O94 W 8 EG 202 090 Vi .1.2 (1999-0

38、3) IETF WC 1577 (1994): “Classical IP and ARP over ATM“. ISO/IEC 13247 (1997): “Information technology - Telecommunications and information exchange between systems - Broadband Private Integrated Services Network - Inter-exchange signalling protocol - Basic calkonnection control“. ISOEC 1 157 1: “In

39、formation technology - Telecommunications and information exchange between systems - Numbering and sub-addressing in private integrated services networks“. ITU-T Recommendation H.225.0 (1998): “Call signalling protocols and media stream packetization for packet based multimedia communication systems

40、“. ITU-T Recommendation H.245 (1998): “Control protocol for multimedia communication“. ITU-T Recommendation H.323 (1 998): “Packet based multimedia communication systems“. ITU-T Recommendation H.450.1 (1998): “Generic functional protocol for the support of supplementary services in H.323“. IT-T Reco

41、mmendation H.450.2 (1998): “Call transfer supplementary service for H.323“. ITU-T Recommendation H.450.3 (1998): “Call diversion supplementary service for H.323“. ITU-T Recommendation 4.2726.1 (1996): “B-ISDN user part - ATM end system address“. ITU-T Recommendation 4.293 1 (1995): “Digital Subscrib

42、er Signalling system No. 2 SS 2) - User-Network Interface (UNI) Layer 3 specification for basic calUconnection control“. ITU-T Recommendation 4.2932.1 (1996): “Digital subscriber signalling system No. 2 - Generic functional protocol: Core functions“. ITU-T Recommendation 4.931 (1993): “ISDN user-net

43、work interface layer 3 specification for basic call control“. ITU-T Recommendation T. 120 (1996): “Data protocols for multimedia conferencing“ Void. Void. Void. ITU-T Recommendation H.235: “Security and encryption for H-Series (H.323 and other H.245-based) multimedia terminais“. ITU-T Recommendation

44、 G.711: “Pulse code modulation (PCM) of voice frequencies“. ITU-T Recommendation G.723.1: “Dual rate speech coder for multimedia communications transmitting at 5.3 and 6.3 kbitls“. ITU-T Recommendation G.728: “Coding of speech at 16 kbits using low-delay code excited linear prediction“. ITU-T Recomm

45、endation G.729: “Coding of speech at 8 kbitls using conjugate-structure algebraic-code-excited linear-prediction“. ITU-T Recommendation H.261: “Video codec for audiovisual services at p x 64 kbit/s“. ITU-T Recommendation H.263: “Video coding for low bit rate communication“. ITU-T Recommendation E. 1

46、64: “The international public telecommunication numbering plan“. ITU-T Recommendation Q. 2761: “Functional description of the B-ISDN user part (B-ISUP) of signalling system No. 7“. ETSI 9 EG 202 O90 VI .i .2 (i 999-03) 361 ITU-T Recommendation Q. 2762: “General Functions of messages and signals of t

47、he B-ISDN user part (B-ISUP) of Signalling System No. 7“. ITU-T Recommendation Q. 2763: “Signalling System No. 7 B-ISDN User Part (B-ISUP) - Formats and codes“. ITU-T Recommendation Q. 2764: “Signalling System No. 7 B-ISDN User Part (B-ISUP) - Basic call procedures“. IT-T Recommendation H.246: “Inte

48、rworking of H-Series multimedia terminals with H-Series multimedia terminals and voicehoiceband terminais on GSTN and ISDN“. i371 t381 391 401 i411 ATM Forum UNI 3.1: “ATM User-Network Interface Specification V3.1“. IT-T Recommendation E. 191 : “B-ISDN numbering and addressing“. 3 Abbreviations For

49、the purposes of the present document, the following abbreviations apply: AESA AFI ATM BC B-HLI B-ISDN B-ISUP B-PISN cc CN DCC GFP GFT GSM GSTN ICD ETF IMT IN JP ISDN LAN LANE MC MCU MGCP MIE3 MP MPLS MPOA MT NAVDEC NSAP PISN PNNI PNP PUM PVC QOS RAN ATM End System Address Authority and Format Identifier Asynchronous Transfer Mode Bearer Control Broadband6 High Layer Information Broadband-ISDN Broadband-ISDN User Part Broadband-PISN Call Control Core Network Designated Country Code Generic Functional Protocol Generic Functional Transport Global System Mobile G