1、 INTERNATIONAL TELECOMMUNICATION UNION ITU-T Q.2630.3TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (10/2003) SERIES Q: SWITCHING AND SIGNALLING Broadband ISDN Common aspects of B-ISDN application protocols for access signalling and network signalling and interworking AAL type 2 signalling protocol
2、 Capability Set 3ITU-T Recommendation Q.2630.3 ITU-T Q-SERIES RECOMMENDATIONS SWITCHING AND SIGNALLING SIGNALLING IN THE INTERNATIONAL MANUAL SERVICE Q.1Q.3 INTERNATIONAL AUTOMATIC AND SEMI-AUTOMATIC WORKING Q.4Q.59 FUNCTIONS AND INFORMATION FLOWS FOR SERVICES IN THE ISDN Q.60Q.99 CLAUSES APPLICABLE
3、 TO ITU-T STANDARD SYSTEMS Q.100Q.119 SPECIFICATIONS OF SIGNALLING SYSTEMS No. 4, 5, 6, R1 AND R2 Q.120Q.499 DIGITAL EXCHANGES Q.500Q.599 INTERWORKING OF SIGNALLING SYSTEMS Q.600Q.699 SPECIFICATIONS OF SIGNALLING SYSTEM No. 7 Q.700Q.799 Q3 INTERFACE Q.800Q.849 DIGITAL SUBSCRIBER SIGNALLING SYSTEM No
4、. 1 Q.850Q.999 PUBLIC LAND MOBILE NETWORK Q.1000Q.1099 INTERWORKING WITH SATELLITE MOBILE SYSTEMS Q.1100Q.1199 INTELLIGENT NETWORK Q.1200Q.1699 SIGNALLING REQUIREMENTS AND PROTOCOLS FOR IMT-2000 Q.1700Q.1799 SPECIFICATIONS OF SIGNALLING RELATED TO BEARER INDEPENDENT CALL CONTROL (BICC) Q.1900Q.1999
5、BROADBAND ISDN Q.2000Q.2999 General aspects Q.2000Q.2099 Signalling ATM adaptation layer (SAAL) Q.2100Q.2199 Signalling network protocols Q.2200Q.2299 Common aspects of B-ISDN application protocols for access signalling and network signalling and interworking Q.2600Q.2699 B-ISDN application protocol
6、s for the network signalling Q.2700Q.2899 B-ISDN application protocols for access signalling Q.2900Q.2999 For further details, please refer to the list of ITU-T Recommendations. ITU-T Rec. Q.2630.3 (10/2003) i ITU-T Recommendation Q.2630.3 AAL type 2 signalling protocol Capability Set 3 Summary This
7、 Recommendation specifies the inter-node protocol and nodal functions that control AAL type 2 point-to-point connections. The AAL type 2 signalling protocol specified in this Recommendation is usable in switched and non-switched environments and can operate in public or private networks over a range
8、 of signalling transport protocol stacks. It also provides maintenance capabilities, carriage of user-plane protocol stack information and carriage of an identifier to link the connection control protocol with other higher layer control protocols. Source ITU-T Recommendation Q.2630.3 was approved on
9、 14 October 2003 by ITU-T Study Group 11 (2001-2004) under the ITU-T Recommendation A.8 procedure. ii ITU-T Rec. Q.2630.3 (10/2003) FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications. The ITU Telecommunication Standard
10、ization Sector (ITU-T) is a permanent organ of ITU. ITU-T is responsible for studying technical, operating and tariff questions and issuing Recommendations on them with a view to standardizing telecommunications on a worldwide basis. The World Telecommunication Standardization Assembly (WTSA), which
11、 meets every four years, establishes the topics for study by the ITU-T study groups which, in turn, produce Recommendations on these topics. The approval of ITU-T Recommendations is covered by the procedure laid down in WTSA Resolution 1. In some areas of information technology which fall within ITU
12、-Ts purview, the necessary standards are prepared on a collaborative basis with ISO and IEC. NOTE In this Recommendation, the expression “Administration“ is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. Compliance with this Recommendation
13、 is voluntary. However, the Recommendation may contain certain mandatory provisions (to ensure e.g. interoperability or applicability) and compliance with the Recommendation is achieved when all of these mandatory provisions are met. The words “shall“ or some other obligatory language such as “must“
14、 and the negative equivalents are used to express requirements. The use of such words does not suggest that compliance with the Recommendation is required of any party. INTELLECTUAL PROPERTY RIGHTS ITU draws attention to the possibility that the practice or implementation of this Recommendation may
15、involve the use of a claimed Intellectual Property Right. 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
16、Recommendation, ITU had 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 databa
17、se. ITU 2004 All rights reserved. No part of this publication may be reproduced, by any means whatsoever, without the prior written permission of ITU. ITU-T Rec. Q.2630.3 (10/2003) iii CONTENTS Page 1 Scope 1 2 References. 2 2.1 Normative references 2 2.2 Informative references 3 3 Definitions 3 4 A
18、bbreviations 5 5 General framework of the AAL type 2 signalling protocol 9 5.1 Interface between the AAL type 2 signalling entity and the AAL type 2 served user 11 5.2 Interface between the AAL type 2 signalling entity and the generic signalling transport . 15 5.3 Interface between the AAL type 2 si
19、gnalling entity and layer management 16 6 Forward and backward compatibility . 18 6.1 Backward compatibility rules. 18 6.2 Forward compatibility mechanism. 18 7 Format and coding of AAL type 2 signalling protocol. 19 7.1 Coding conventions for the AAL type 2 signalling protocol . 19 7.2 Format and c
20、oding of the AAL type 2 signalling protocol messages 21 7.3 Parameter specification of the AAL type 2 signalling protocol messages. 26 7.4 Field specification of the AAL type 2 signalling protocol parameters 34 8 Procedure of the AAL type 2 signalling protocol. 47 8.1 Compatibility 48 8.2 Nodal func
21、tions 52 8.3 Protocol entity 75 8.4 List of timers. 102 Annex A Support for non-switched scenario 102 A.1 Introduction 102 A.2 References 103 A.3 Definitions 103 A.4 Abbreviations . 103 A.5 General framework of the AAL type 2 signalling protocol . 103 A.6 Forward and backward compatibility. 105 A.7
22、Format and coding of AAL type 2 signalling protocol 105 A.8 Procedure of the AAL type 2 signalling protocol 108 iv ITU-T Rec. Q.2630.3 (10/2003) Page Annex B Coding of the compatibility information . 111 B.1 Coding of the compatibility information for CS-1 and CS-2 networks using link characteristic
23、s for connection resource allocation. 111 B.2 Coding of the compatibility information for CS-1 and CS-2 networks using service specific information for connection resource allocation 113 B.3 Coding of the compatibility information of the new parameters for CS-1 and CS-2 networks . 114 Annex C Interw
24、orking with CS-1 and CS-2 nodes for connection resource allocation . 116 C.1 Connection resources indicated with link characteristic parameters 116 C.2 Connection resources indicated with service specific information parameters. 120 C.3 Service Specific Information indicated with SSCS information pa
25、rameters. 124 Annex D SDL Definition of the AAL type 2 Signalling Protocol 126 Appendix I Example message sequences 127 I.1 Successful establishment and release . 127 I.2 Unsuccessful establishment 128 I.3 Management message sequences . 128 I.4 Release crossover/release collision 129 I.5 Resource co
26、ntention . 130 I.6 Successful modification 131 I.7 Unsuccessful modification . 131 I.8 Modification Collision 132 Appendix II Conversion of CS-1 or CS-2 (Preferred) Link Characteristics to (Preferred) Transfer Capability parameters 132 II.1 Guidelines and definitions 132 II.2 Bit rates. 134 II.3 Max
27、imum allowed packet sizes 135 II.4 Token bucket sizes . 136 II.5 Determination of the TC class 136 II.6 Source traffic type 136 Appendix III Interworking examples 137 III.1 Symbols and abbreviations. 137 III.2 Connection Establishment 138 III.3 Connection Resource Modification 148 ITU-T Rec. Q.2630.
28、3 (10/2003) 1 ITU-T Recommendation Q.2630.3 AAL type 2 signalling protocol Capability Set 3 1 Scope This Recommendation describes the AAL type 2 signalling protocol that supports the dynamic establishment and release of individual AAL type 2 point-to-point connections. It also describes the maintena
29、nce procedures, the framework of the protocol, and the interactions between an AAL type 2 signalling protocol entity and: the signalling protocol user; a signalling transport converter; and layer management. This Recommendation also describes the connection states, messages, parameters, timers, loca
30、l, and peer-to-peer procedures used for the control of those connections. The scope of this Recommendation is illustrated in Figure 1-1. The AAL type 2 signalling protocol can be deployed over a range of signalling transport protocol stacks. This Recommendation is based on the requirements defined i
31、n ITU-T Q-series Recommendations Supplement 42 21 “Signalling Requirements for AAL type 2 Link Control Capability Set 3“. Q.2630.3_F1-1Primitives PrimitivesSAPGeneric primitives Generic primitivesSignallingtransport converterPrimitivesSAP(Note 2)SAPPrimitives PrimitivesPrimitivesSAPLayermanagementLa
32、yermanagementSignallingtransport converterSAPSAPSpecific primitives Specific primitivesSignallingtransportSignallingtransportSAPSAPAAL type 2served userAAL type 2served user(Note 2)AAL type 2signallingAAL type 2signallingNOTE 1 The entities and Service Access Points (SAP) bounded by the gray broken
33、line indicate the extent of the definitionsspecified in this Recommendation.NOTE 2 There are cases where the AAL type 2 served user is not present.AAL type 2signalling messagesThis Recommendation(Note 1)Figure 1-1/Q.2630.3 Functional architecture of the AAL type 2 signalling 2 ITU-T Rec. Q.2630.3 (1
34、0/2003) 2 References 2.1 Normative references The following ITU-T Recommendations and other references contain provisions 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
35、references are subject to revision; users of this Recommendation are therefore encouraged to investigate the possibility of applying the most recent edition of the Recommendations and other references listed below. A list of currently valid ITU-T Recommendations is regularly published. The reference
36、 to a document within this Recommendation does not give it, as a stand-alone document, the status of a Recommendation. 1 ITU-T Recommendation I.363.2 (2000), B-ISDN ATM adaptation layer specification: Type 2 AAL. 2 ITU-T Recommendation I.361 (1999), B-ISDN ATM layer specification. 3 ITU-T Recommenda
37、tion X.200 (1994) ISO/IEC 7498-1:1994, Information technology Open Systems Interconnection Basic Reference Model: The basic model. 4 ITU-T Recommendation X.210 (1993) | ISO/IEC 10731:1994, Information technology Open Systems Interconnection Basic Reference Model: Conventions for the definition of OS
38、I services. 5 ITU-T Recommendation X.213 (2001) | ISO/IEC 8348:2002, Information technology Open Systems Interconnection Network service definition. 6 ITU-T Recommendation Q.850 (1998), Usage of cause and location in the Digital Subscriber Signalling System No. 1 and the Signalling System No. 7 ISDN
39、 User Part. 7 ITU-T Recommendation Q.2610 (1999), Usage of cause and location in B-ISDN user part and DSS2. 8 ITU-T Recommendation I.366.2 (1999), AAL type 2 service specific convergence sublayer for trunking. 9 ITU-T Recommendation I.366.1 (1998), Segmentation and Reassembly Service Specific Conver
40、gence Sublayer for the AAL type 2. 10 ITU-T Recommendation E.164 (1997), The international public telecommunication numbering plan. 11 IEEE Standard 802-2001, IEEE Standards for Local and Metropolitan Area Networks: Overview and Architecture. 12 ITU-T Recommendation Q.2150.0 (2001), Generic signalli
41、ng transport service. 13 ITU-T Recommendation I.356 (2000), B-ISDN ATM layer cell transfer performance. 14 ITU-T Recommendation I.366.2 (2000), AAL type 2 service specific convergence sublayer for narrow-band services. 15 ITU-T Recommendation Q.2630.1 (1999), AAL type 2 signalling protocol Capabilit
42、y Set 1. 16 ITU-T Recommendation Q.2630.2 (2000), AAL type 2 signalling protocol Capability Set 2. 17 ITU-T Recommendation E.412 (2003), Network management controls. ITU-T Rec. Q.2630.3 (10/2003) 3 18 ITU-T Recommendation Q.542 (1993), Digital exchange design objectives Operations and maintenance. 1
43、9 ITU-T Recommendation I.378 (2002), Traffic control and congestion control at the ATM Adaptation Layer Type 2. 2.2 Informative references The documents listed in this clause provide informative background information for the reader and are not normative within this Recommendation. 21 ITU-T Q-series
44、 Recommendations Supplement 42 (2003), Technical Report TRQ.2402: Transport control signalling requirements Signalling requirements for AAL type 2 link control Capability Set 3. 22 ITU-T Recommendation Q.2150.1 (2001), Signalling transport converter on MTP3 and MTP3b. 23 ITU-T Recommendation Q.2150.
45、2 (2001), Signalling transport converter on SSCOP and SSCOPMCE. 24 ITU-T Recommendation Q.2210 (1996), Message transfer part level 3 functions and messages using the services of ITU-T Recommendation Q.2140. 25 ITU-T Recommendation Q.2110 (1994), B-ISDN ATM adaptation layer Service Specific Connectio
46、n Oriented Protocol (SSCOP). 26 ITU-T Recommendation Q.2130 (1994), B-ISDN signalling ATM adaptation layer Service specific coordination function for support of signalling at the user-network interface (SSCF at UNI). 27 ITU-T Recommendation Q.2941.2 (1999), Digital Subscriber Signalling System No. 2
47、 Generic identifier transport extensions. 28 ITU-T Recommendation Q.2150.3 (2002), Signalling transport converter on SCTP. 29 ITU-T Recommendation Q.2140 (1995), B-ISDN ATM adaptation layer Service specific coordination function for signalling at the network node interface (SSCF at NNI). 30 ETSI TS
48、126 103 V 5.1.0 (2002), Universal Mobile Telecommunications System (UMTS); Speech codec list for GSM and UMTS (3GPP TS 26.103 version 5.1.0 Release 5). 3 Definitions This Recommendation is based upon the concepts developed in ITU-T Recs X.200 3 and X.210 4. In addition, for the purposes of this Reco
49、mmendation, the following definitions apply: 3.1 AAL type 2 channel: A concept used in ITU-T Rec. I.363.2 1 to describe transport of CPS-packets 1 associated in a common unique identifier value called CID on an ATM VCC. 3.2 AAL type 2 connection: The logical concatenation of one or more AAL type 2 links between two AAL type 2 service endpoints. 3.3 AAL type 2 connection resource: Describe the attributes of the AAL type 2 links making up
