1、INTERNATIONAL TELECOMMUNICATION UNION ITU-T TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU Q.2761 (1 211 999) SERIES Q: SWITCHING AND SIGNALLING Broadband ISDN - B-ISDN application protocols for the n e two r k s i g n a I I i n g Functional description of the B-ISDN user part (B-ISUP) of signallin
2、g system No. 7 ITU-T Recommendation Q.2761 (Formerly CCITT Recommendation) ITU-T Q-SERIES RECOMMENDATIONS SWITCHING AND SIGNALLING SIGNALLING IN THE INTERNATIONAL MANUAL SERVICE INTERNATIONAL AUTOMATIC AND SEMI-AUTOMATIC WORKING FUNCTIONS AND INFORMATION FLOWS FOR SERVICES IN THE ISDN SPECIFICATIONS
3、 OF SIGNALLING SYSTEMS No. 4 AND No. 5 SPECIFICATIONS OF SIGNALLING SYSTEM No. 6 SPECIFICATIONS OF SIGNALLING SYSTEM RI SPECIFICATIONS OF SIGNALLING SYSTEM R2 DIGITAL EXCHANGES INTERWORKING OF SIGNALLING SYSTEMS SPECIFICATIONS OF SIGNALLING SYSTEM No. 7 DIGITAL SUBSCRIBER SIGNALLING SYSTEM No. 1 PUB
4、LIC LAND MOBILE NETWORK INTERWORKING WITH SATELLITE MOBILE SYSTEMS INTELLIGENT NETWORK CLAUSES APPLICABLE TO ITU-T STANDARD SYSTEMS SIGNALLING REQUIREMENTS AND PROTOCOLS FOR IMT-2000 BROADBAND ISDN General aspects Signalling ATM adaptation layer (SAAL) Signalling network protocols Common aspects of
5、B-ISDN application protocols for access signalling and network signalling and interworking Q.1-Q.3 Q.4-Q. 59 Q.60-Q.99 Q.100-Q.119 Q. 120-Q.249 Q.250-Q.309 Q.310-Q.399 Q.400-Q.499 Q.500-Q.599 Q.600-Q.699 Q.700-Q.849 Q.850-Q.999 Q. 1000-Q. 1 O99 Q.1100-Q.1199 Q. 1200-Q. 1699 Q. 1700-Q. 1799 Q.2000-Q.
6、2999 Q.2000-Q.2099 Q.21 00-Q.2199 Q.2200-Q.2299 Q.2600-Q.2699 B-ISDN application protocols for the network signalling Q.270W.2899 B-ISDN application protocols for access signalling Q.2900-Q.2999 For further details, please rer to the list of ITD-T Recommendations. ITU-T RECOMMENDATION 4.2761 FUNCTIO
7、NAL DESCRIPTION OF THE B-ISDN USER PART (B-ISUP) OF SIGNALLING SYSTEM No. 7 Summary This Recommendation is one of a set of Recommendations that describe the Broadband ISDN User Part. It specifies an overview of the signalling capabilities and functions required to support basic call and bearer servi
8、ces, additional featwes and supplementary services for B-ISDN applications. The scope of the B-ISDN User Part covers international B-ISDN networks. However, the B-ISDN User Part is suitable for national applications. Most signalling procedures, information elements and message types specified for in
9、ternational use are also required in typical national applications. Source ITU-T Recommendation 4.2761 was revised by ITU-T Study Group 11 (1997-2000) and was approved under the WTSC Resolution No. 1 procedure on 3 December 1999. Recommendation 4.2761 (12/1999) 1 FOREWORD ITU (International Telecomm
10、unication Union) is the United Nations Specialized Agency in the field of telecommunications. The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of the ITU. The ITU-T is responsible for studying technical, operating and tariff questions and issuing Recommendations on them
11、with a view to standardizing telecommunications on a worldwide basis. The World Telecommunication Standardization Conference (WTSC), which meets every four years, establishes the topics for study by the ITU-T Study Groups which, in their turn, produce Recommendations on these topics. The approval of
12、 Recommendations by the Members of the ITU-T is covered by the procedure laid down in WTSC Resolution No. 1. In some areas of information technology which fall within ITU-Ts purview, the necessary standards are prepared on a collaborative basis with IS0 and IEC. NOTE In this Recommendation, the expr
13、ession “Administration“ is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. INTELLECTUAL PROPERTY RIGHTS The ITU draws attention to the possibility that the practice or implementation of this Recommendation may involve the use of a claimed I
14、ntellectual Property Right. The ITU takes no position concerning the evidence, validity or applicability of claimed Intellectual Property Rights, whether asserted by ITU members or others outside of the Recommendation development process. As of the date of approval of this Recommendation, the ITU ha
15、d not received notice of intellectual property, protected by patents, which may be required to implement this Recommendation. However, implementors are cautioned that this may not represent the latest information and are therefore strongly urged to consult the TSB patent database. o ITU 2001 All rig
16、hts reserved. No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing fi-om the ITU. 11 Recommendation 4.2761 (12/1999) CONTENTS 1 2 3 4 5 5.1 5.2 5.3 5.4 Scope . References .
17、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Relationships to other Recommendations . . . . . . . . . . . . . . . .
18、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
19、 . . . . . . . . . . . . . . . Introduction to B-ISDN User Part signalling procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Address signalling . Basic procedures . . . Extensions integrated into the basic procedures . . . . . . . . . . . . . . . . . .
20、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.3.1 5.3.2 5.3.3 5.3.4 5.3.5 5.3.6 5.3.7 5.3.8 5.3.9 5.3.10 Former ITU-T Recommendation 4.2723.1 (07/96), B-ISDN User Part - Support of additional traffic parameters for Sustainable Cell Rate (SCR) and Quality of Service
21、 (40s) Former ITU-T Recommendation 4.2723.2 (09/97), Extensions to the B-ISDN User Part - Support of ATM transfer capability in the broadband bearer capability parameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
22、 . . . . . . . . Former ITU-T Recommendation 4.2723.3 (09/97), Extensions to the B-ISDN User Part - Signalling capabilities to support traffic parameters for the Available Bit Rate (ABR) ATM transfer capability Former ITU-T Recommendation 4.2723.4 (09/97), Extensions to the B-ISDN User Part - Signa
23、lling capabilities to support traffic parameters for the ATM Block Transfer (ABT) ATM transfer capability . . . . . . . . . . . . . . . . . . . . . Former ITU-T Recommendation 4.2723.5 (03/99), B-ISDN User Part - Support of cell delay variation tolerance indication . . . . . . . . . . . . . . . . .
24、 . . . . . . . . . . . . . . . . . . . . Former ITU-T Recommendation 4.2723.6 (05/98), Extension to the Signalling Systems No. 7 B-ISDN User Part - Signalling capabilities to support the indication of the statistical bit rate configuration 2 (SBR 2) and 3 (SBR 3) ATM transfer capabilities Former IT
25、U-T Recommendation 4.2725.1 (05/98), B-ISDN User Part - Support of negotiation during connection setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Modification procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
26、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Former ITU-T Recommendation 4.2726.1 (07/96), B-ISDN User Part - ATM end system address . Former ITU-T Recommendation 4.2727 (07/96), B-ISDN User Part - Support of frame relay . Extensions to the basic procedure presented as sepa
27、rate Recommendations . . . . . . . . . . . . . 5.4.1 ITU-T Recommendation 4.2722.1 (1996), B-ISDN User Part - Network node interface specification for point-to-multipoint call/connection control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
28、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ITU-T Recommendation 4.2724.1 (1996), B-ISDN User Part - bok- ahead without state change for the network node interface . ITU-T Recommendation 4.2726.2 (1996), B-ISDN User Part - Call prior
29、ity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.4.2 5.4.3 Recommendation 4.2761 (12/1999) Page 1 4 6 7 8 8 8 9 9 9 9 9 9 10 10 1
30、0 12 12 12 12 12 12 . 111 5.5 6 7 7.1 7.2 8 8.1 8.2 5.4.4 5.4.5 5.4.6 5.4.7 5.4.8 5.4.9 5.4.10 ITU Recommendation 4.2726.3 (1996). B-ISDN User Part - Network generated session identifier ITU Recommendation 4.2726.4 (1997), Extensions to the B-ISDN User Part - Application generated identifiers ITU Re
31、commendation 4.2730 (1 995), Broadband integrated services digital network (B-ISDN) Signalling System No . 7 B-ISDN User Part (B-ISUP) - Supplementary services ITU Recommendation 4.2735.1 (1997), Stage 3 description for community of interest supplementary services for B-ISDN using SS No . 7: Closed
32、User Group (CUG) ITU Recommendation 4.2765 (1999), Signalling System No . 7 B-ISDN User Part (B-ISUP) - Application transport mechanism (APM) ITU-T Recommendation 4.2766.1 (1998), Switched Virtual Path ITU-T Recommendation 4.2767.1 (1 998), Soft PVC capability capability B-ISDN User Part interworkin
33、g Capabilities supported by the B-ISDN User Part Services assumed fiom the MTP General Description of primitives 7.2.1 Transfer 7.2.2 Pause 7.2.3 Resume 7.2.4 Status . Future enhancements Version compatibility Coding guidelines for compatibility of B-ISDN User Parts supporting different releases of
34、B-ISDN services . 8.2.1 Messages 8.2.2 Parameters . . Appendix I . Guidelines for use of instruction indicators . I . 1 Introduction . 1.2 Priority or execution . 1.3 Notification . 1.4 Considerations 1.4.1 Discarding unrecognized messages . 1.4.2 Essential services . 1.4.3 Non-essential services .
35、Page 13 13 13 13 13 13 13 14 14 16 16 16 16 17 17 17 17 18 18 18 18 19 19 19 19 19 19 19 20 iv Recommendation 4.2761 (12/1999) 1.4.4 BroadbandNarrow-band intenvorking 1.4.5 Pass on . Appendix II - Text rom Recommendation 4.272 1.1 B-ISDN network Node Interface II . 1 Signalling Capability Set 2, Ste
36、p 1 . B-ISDN NNI CS-2.1 content II.l.l II . 1.2 II . 1.3 II . 1.4 II . 1.5 II.1.6 II . 1.7 II.1.8 II . 1.9 Point-to-multipoint calls Additional traffic parameters . Negotiation of traffic characteristics during call setup Modification of traffic characteristic during the active phase of the call Cal
37、l priority Look-ahead ATM end system address . Network call correlation ID . Frame relay 11.2 11.3 Functional limitations of B-ISDN NNI CS-2.1 Common protocol principles for B-ISDN NNI CS-2.1 II.3.1 General specification model Modelling examples for CS-2.1 . Intenvorking with CS- 1 exchanges . II.3.
38、2 11.4 II.4.1 II.4.2 II.4.3 II.4.4 II.4.5 II.4.6 II.4.7 II.4.8 II.4.9 Point-to-multipoint calls (multi-party calls) Look-ahead capability Negotiation of traffic characteristics during call setup Modification of traffic characteristics during the active phase of the call . Call priority Additional tr
39、affic parameters . ATM end system address . Network call correlation ID . Frame relay Page 20 20 20 20 21 21 21 21 22 22 22 22 22 22 23 23 25 30 30 30 30 30 31 31 31 31 31 Recommendation 4.2761 (12/1999) V Recommendation 4.2761 FUNCTIONAL DESCRIPTION OF THE B-ISDN USER PART (B-ISUP) OF SIGNALLING SY
40、STEM No. 7 (Geneva, 1999) 1 Scope This Recommendation specifies an overview of the signalling capabilities and functions required to support basic call and bearer services and supplementary services for B-ISDN applications. The B-ISDN User Part protocol will form the basis for future capability sets
41、 of B-ISDN signalling protocols. The B-ISDN User Part is applicable to international B-ISDN networks. At transit nodes the B-ISDN User Part supports the N-ISUP services depicted in ISUP 1997 Recommendations. Furthermore, the B-ISDN User Part is suitable for national applications. Most signalling pro
42、cedures, information elements and message types specified for international use are also required in typical national applications. Moreover, coding space has been reserved in order to allow national Administrations and recognized operating agencies to introduce network specific signalling messages
43、and elements of information within the internationally standardized protocol structure. Architecturally, the B-ISDN User Part can be viewed as a set of functional blocks each representative of a particular type of protocol function. This architectural separation can be seen in Figure 1. The B-ISDN U
44、ser Part makes use of the services provided by the Message Transfer Part (MTP) level 3. This Recommendation is one of a set of Recommendations that describe the Broadband ISDN User Part. Other ITU-T Recommendations in this group include: ITU-T Recommendation 4.26 1 O (1 999), Usage of course and loc
45、ation in B-ISDN User Part and DSS2. ITU-T Recommendation 4.2650 (1999), Interworking between Signalling System No. 7 Broadband ISDN User Part -ISUP) and Digital Subscriber Signalling System No. 2 ITU-T Recommendation 4.2660 (1999), Interworking between Signalling System No. 7 Broadband ISDN User Par
46、t -ISUP) and Narrow-band ISDN User Part (IV-ISUP). ITU-T Recommendation 4.2722.1 (1996), B-ISDN User Part - Network node interface specijkation for point-to-multipoint callUconnection control. ITU-T Recommendation 4.2724.1 (1996), B-ISDN User Part - Look-ahead without state change for the network no
47、de interface. ITU-T Recommendation 4.2726.2 (1996), B-ISDN User Part - Call priority. ITU-T Recommendation 4.2726.3 (1996), B-ISDN User Part - Network generated session iden tiper. ITU-T Recommendation 4.2726.4 (1997), Extensions to the B-ISDN User Part - Application generated identipers. ITU-T Reco
48、mmendation 4.2730 (1999), Signalling System No. 7 B-ISDN User Part -ISUP) - Supplementary services. (aSS2). Recommendation 4.2761 (12/1999) 1 ITU-T Recommendation 4.2735.1 (1997), Stage 3 description for community of interest supplementary services for B-ISDN using SS No. 7: Closed User Group (CUG).
49、 ITU-T Recommendation 4.2762 (1999), General Junctions of messages and signals of the B-ISDN User Part -ISUP) of Signalling System No. 7. ITU-T Recommendation 4.2763 (1999), Signalling System No. 7 B-ISDN User Part -ISUP) -Formats and codes. ITU-T Recommendation 4.2764 (1999), Signalling System No. 7 B-ISDN User Part -ISUP) - Basic call procedures. ITU-T Recommendation 4.2765 (1999), Signalling System No. 7 B-ISDN User Part -ISUP) - Application transport mechanism (APM). ITU-T Recommendation 4.2766.1 (1998), Switched virtual path capa
