1、INTERNATIONAL TELECOMMUNICATION UNION ITU-T TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU Q.2932.1 SERIES Q: SWITCHING AND SIGNALLING Broadband ISDN - B-ISDN application protocols for access si g na I I i ng (07/96) Digital Subscriber Signalling System No. 2 - Generic f u nct ion a I pro toco I :
2、Core functions ITU-T Recommendation Q.2932. I (Previously CCITT Recommendation) ITU-T Q-SERIES RECOMMENDATIONS SWITCHING AND SIGNALLING CLAUSES APPLICABLE TO ITU-T STANDARD SYSTEMS SPECIFICATION OF SIGNALLING SYSTEMS No. 4 AND No. 5 SPECIFICATIONS OF SIGNALLING SYSTEM No. 6 SPECIFICATIONS OF SIGNALL
3、ING 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 PUBLIC LAND MOBILE NETWORK INTERWORKING WITH SATELLITE MOBILE SYSTEMS INTELLIGENT NETWORK BROADBAND ISDN Gene
4、ral aspects ATM adaptation layer Signalling network protocols SIGNALLING IN THE INTERNATIONAL MANUAL SERVICE INTERNATIONAL AUTOMATIC AND SEMI-AUTOMATIC WORKING FUNCTIONS AND INFORMATION FLOWS FOR SERVICES IN THE ISDN Q.1-Q.3 Q.4-Q .59 Q. 60-Q. 99 Q. 100-Q. 1 19 Q. 120-(2.249 Q.250-Q.309 Q.310-Q.399
5、Q.400-Q.499 Q.500-Q.599 Q.600-Q.699 Q.700-Q.849 Q. 850-Q.999 Q. 1000-Q.l O99 Q.1100-Q.1199 Q.1200-Q.1999 Q.2000-Q.2999 Q.2000-Q.2099 (2.21 00-Q.21 99 Q.2200-Q.2599 ling and Q.2600-Q.2699 Common aspects of B-ISDN application protocols for -c network signalling and interworking B-ISDN application prot
6、ocols of the network ;S sign Q.2700-(2.2899 8-ISDN application protocols for access signalling .2900-Q.2999 For further details, please refer to ITU-T List of Recommendations. STD*ITU-T RECMN Q-2732.L-ENGL L77b Li8b257L Ob278b3 TL5 ITU-T RECOMMENDATION Q.2932.1 DIGITAL SUBSCRIBER SIGNALLING SYSTEM N
7、O. 2 - GENERIC FUNCTIONAL PROTOCOL: CORE FUNCTIONS Summary This Recommendation defines the operation of the Digital Subscriber Signalling System Number 2 (DSS 2) for Generic Functional Protocol core functions at the TB or at the coincident S, and TB reference point of the User to Network Interface o
8、f the Broadband-Integrated Services Digital Network (B-ISDN). The Generic Functional Protocol core functions defined in this Recommendation provide a means of exchanging ROSE components on behalf of signalling application in peer entities. These signalling applications may either be for the support
9、of supplementary services or provide protocol support for the other features (such as Look Ahead, Status request, Localh-emote interrogation), in association with existing calls and bearers (bearer related signalling), or independently of existing bearers (connection-oriented or connectionless beare
10、r independent signalling). Source ITU-T Recommendation 4.2932.1 was prepared by ITU-T Study Group 11 (1993-1996) and was approved under the WTSC Resolution No. 1 procedure on the 9th of July 1996. STD-ITU-T RECMN Q.2732.L-ENGL Lb Lib257L Ob278bLi 951 m FOREWORD ITU (International Telecommunication U
11、nion) 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 with a view
12、 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 Recommenda
13、tions by the Members of the ITU-T is covered by the procedure laid down in WTSC Resolution No. 1 (Helsinki, March 1-12, 1993). 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 Recomm
14、endation, the expression “Administration” is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. O ITU 1997 All rights reserved. No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, in
15、cluding photocopying and microfilm, without permission in writing from the ITU. 11 Recommendation Q.2932.1 (07/96) 1 2 3 4 5 5.1 5.2 5.3 5.4 6 6.1 6.2 6.3 7 7.1 7.2 8 8.1 8.2 9 STD*ITU-T RECMN Q-2732*L-ENGL L77b 48b257L Ub278b5 878 = CONTENTS Scope References Definitions Abbreviations . Description
16、. Overview 5.1.1 Local information exchange 5.1.2 Non-local information exchange . Application of the protocol model to local information exchange . Services provided by individual protocol entities Services provided by ROSE Services provided by bearer-related transport . Services provided by connec
17、tionless bearer-independent transport Operational requirements . Requirements on the originating network side . Protocol architecture . 5.4.1 5.4.2 5.4.3 5.4.4 5.4.5 Services provided by GFT-control Services provided by connection-oriented bearer-independent transport . Provision and withdrawal . Re
18、quirements on the destination network side . Primitive definitions and state definitions Primitive definitions . State definitions 7.2.1 APDU transport mechanisms 7.2.2 GFT-Control Coding requirements Message functional definitions and content . 8.1 . 1 Additional messages for bearer-related transac
19、tions . 8.1.2 Messages for connectionless bearer-independent transport 8.1.3 Messages for connection-oriented bearer-independent transport General message format and information element coding . 8.2.1 Message type . 8.2.2 Other information elements . Signalling procedures at the coincident S, and T,
20、 reference point Page 1 2 3 5 5 5 6 6 6 7 8 8 8 9 9 9 9 9 10 10 10 10 12 12 13 13 13 14 14 15 18 18 19 22 . Recommendation 4.2932.1 (07/96) 111 STD-ITU-T RECMN Q*2932=1-ENGL L99b qBb259L Ob278bb 72q 9.1 APDU transport mechanisms . 9.1 . 1 9.1.2 Bearer-independent transport mechanisms . 9.1.3 9.1.4 B
21、earer-related transport . Connection-oriented bearer-independent transport mechanism Connectionless bearer-independent transport mechanism 9.2.1 Local addressing supplementary service applies . 9.2 Addressing of APDUs 9.2.2 9.2.3 Additional transport procedures where the multiple subscriber number A
22、dditional transport procedures where the subaddressing supplementary service applies . 9.3 GFT-Control . 9.3.1 9.3.2 Transmission of generic functional data . Receipt of generic functional data . 9.4 Remote operations procedures 9.4.1 Introduction . 9.4.2 Procedures for operations 10 Procedures for
23、interworking with private ISDNs . 1 O . 1 APDU transport mechanisms . Bearer-related transport . 1 O . 1-1 1 O . 1.2 Bearer-independent transport mechanisms . 1 O . 1.3 Connection-oriented bearer-independent transport mechanism 1 O . 1.4 Connectionless bearer-independent transport mechanism 10.2 Add
24、ressing of APDUs 10.3 GFT-Control . 10.4 Generic functional protocol 11 1 1.1 Interactions with other networks Interworking with N-ISDNs . 1 1.1.1 Full termination of generic functional protocol 1 1.1.2 Generic interworking function 11.2 Interworking with non-ISDNs 1 1.3 Interworking with frame-rela
25、y 11.4 Interworking with PSPDNs 12 Parameter values . 12.1 Connection-oriented bearer-independent transport 13 Dynamic description (SDLs) 13.1 Block overview diagr am . 22 22 23 23 26 27 27 28 29 29 29 30 30 30 31 34 34 34 34 34 34 34 34 34 34 35 35 36 39 39 39 39 39 40 40 iv Recommendation Q.2932.1
26、 (07/96) STD*ITU-T RECMN Q-2732L-ENGL L77b 48b2572 Ob278b7 bbO 13.2 Coordination function . 13.3 Component transport mechanisms . 13.3.2 Connection-oriented bearer-independent transport mechanism 13.3.3 Connectionless bearer-independent transport mechanism Generic functional transport control (GFT-C
27、ontrol) 13.3.1 Bearer-related transport mechanism i 3.4 Annex A . Formal definition of data types using Recommendation X.208 6 A.l APDU types A.2 Annex B - Formal definition of data types using Recommendation X.680 8 B.l APDU types Definition of 4.293 1 information elements . Appendix I . Informatio
28、n flows I . 1 Connection-oriented bearer-independent transport mechanism . I . 1.1 Bearer independent establishment and data transfer . Appendix II - Instruction indicators Appendix III . Formal definitions of remote operations notation using Recommendation X.208 6 . Appendix IV . Formal definitions
29、 of remote operations notation using Recommendation X.680 8 . Appendix V . Assignment of object identifiers Page 41 41 41 41 41 41 79 79 81 82 82 86 86 86 87 88 89 92 Recommendation 4.2932.1 (07/96) V r- i STD-ITU-T RECMN Q-2732.1-ENGL 1996 m LIb259L Ob278b9 LI33 Recommendation Q.2932.1 DIGITAL SUBS
30、CRIBER SIGNALLING SYSTEM NO. 2 - GENERIC FUNCTIONAL PROTOCOL: CORE FUNCTIONS (Geneva, 1996) 1 Scope This Recommendation specifies the functional protocol for the Broadband Integrated Services Digital Network (B-ISDN), using local information exchange, for the application to a range of additional bas
31、ic call capabilities and supplementary services at the TB reference point or coincident S, and TB reference point (as defined in Recommendation 1.413 i by means of the Digital Subscriber Signalling System No. 2 (DSS 2) protocol. The functional protocol is based on the use of the Facility information
32、 element. To be functional, this protocol requires knowledge of the additional basic call capabilities and supplementary services supported by the user equipment. This facilitates user equipment operation without human intervention by defining the semantics for the protocol elements which user equip
33、ment can process on its own. The procedures specified in this Recommendation can be used for: - activation and deactivation; - invocation and operation; - interrogation; - status request; and - status notification; of additional basic call capabilities and supplementary services in association with
34、existing calls or outside any existing call. The application of this Recommendation to individual additional basic call capabilities and supplementary services is outside the scope of this Recommendation and is defined in those Recommendations which specie the individual capabilities. Further parts
35、of this Recommendation cover the capabilities for non-local addressing within the generic functional protocol. All conformance to this Recommendation is based on the external behaviour at the interface at the T, or coincident S, and T, reference point, i.e. on the generation of the correct message s
36、tructure and in the proper sequence as specified in this Recommendation. Further part(s) of this Recommendation speci the method of testing required to identi conformance to this Recommendation. This Recommendation is applicable to equipment, supporting additional basic call capabilities and supplem
37、entary services using the functional protocol, to be attached at either side of a TB reference point or coincident SB and TB reference point when used as an access to the public ISDN. Recommendation Q.2932.1 (07/96) 1 2 References The following Recommendations and other references contain provisions
38、 which, through reference in this text, constitute provisions of this Recommendation. At the time of publication, the editions indicated were valid. All Recommendations and other references are subject to revision; all users of this Recommendation are therefore encouraged to investigate the possibil
39、ity of applying the most recent addition of the Recommendations and other references listed below. A list of the currently valid ITU-T Recommendations is regularly published. i i51 2 ITU-T Recommendation 1.41 3 (1 993), B-ISDN user-network interface. CCITT Recommendation X.229 (1 988), Remote operat
40、ions: Protocol specijication. CCITT Recommendation X.219 (1988) Remote operations: Model, notation and service dejhition. CCITT Recornmendation 4.9 (i 988), Vocabulary ofswitching and signalling terms. ITU-T Recommendation 1.1 12 (1993), Vocabulary of terms for ISDNs. CCITT Recommendation X.208 (1 9
41、88), SpeciJication of Abstract Syntax Notation One (ASN. 1). CCITT Recommendation X.209 (1988), SpeciJication of basic encoding rules for Abstract Syntax Notation One (ASN. 1). ITU-T Recommendation X.680 (1 994), Information technology - Abstract Syntax Notation One (ASN I): Specijication of basic n
42、otation. ITU-T Recommendation X.690 (1 994), Information technology - ASN. 1 encoding rules; SpeciJication of Basic Encoding Rules (BER), Canonical Encoding Rules (CER) and Distinguished Encoding Rules (DER). CCITT Recommendation 1.2 1 O (1 988), Principles of telecommunication services supported by
43、 an ISDN and the means to describe them. ITU-T Recommendation 4.295 1.2 (1995); Stage 3 description for number identijcation supplementary services using B-ISDN Digital Subscriber Signalling System No. 2 (DSS 2) - Basic call: Multiple Subscriber Number (MSN). ITU-T Recommendation 4.295 1.8 (1 995),
44、Stage 3 description for number identijkation supplementary services using B-ISDN; Digital Subscriber Signalling System No. 2 (DSS 2) - Basic call: Sub-addressing (SUB). ITU-T Recommendation 4.293 1 (1 995), Broadband Integrated Services Digital Network (B-ISDN) - Digital Subscriber Signalling System
45、 No. 2 (DSS 2) - User-Network Interface (UNQ layer 3 speciJication for basic caWconnection control. ITU-T Recommendation 4.297 1 (1 995), Broadband Integrated Services Digital Network (B-ISDN) - Digital Subscriber Signalling System No. 2 (DSS 2) - User-network interface layer 3 specijkation for poin
46、t-to-multipoint call/connection control. ITU-T Recommendation 4.2 130 (i 994) B-ISDN ATM Adaptation layer-Service Specifx Coordination Function (SSCF) for support of signalling at the User Network Interface (SSCF at UNQ. ITU-T Recommendation Z. 1 O0 (1 993), CCITT Specycation and Description Languag
47、e (SDL). Recommendation Q.2932.1 (07/96) 171 ITU-T Recommendation X.880 (1 994), Information technology - Remote operations: Concepts, model and notation. 3 Definitions This Recommendation makes use of the following terms defined in Recommendation X.219 3: - remote operation; - operation; - - associ
48、ation (initiator; responder); - invoking (application entity; invoker). For the purposes of this Recommendation, the following definitions apply: 3.1 application protocol data unit (APDU); component: Data structure as defined in A.l. The term component that appears in Recommendations defining DSS 1
49、has an identical meaning. 3.2 bearer-independent control message: A message as defined in 8.1.3, which on sending or receipt causes a change of the call/connection state at either the network or the user. 3.3 bearer-related transport mechanism: A procedure tied to the procedures for basic call control and tied to a connection in progress, active or in the clearing phase. The call reference used by the basic call control procedure is adopted by the bearer-related service invocations to correlate with the appropriate basic call control transac
