1、 INTERNATIONAL TELECOMMUNICATION UNION ITU-T Q.2631.1TELECOMMUNICATION 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 IP connection control signalli
2、ng protocol Capability Set 1 ITU-T Recommendation Q.2631.1 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 CLAUSE
3、S APPLICABLE 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 SIGNALLI
4、NG SYSTEM No. 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
5、1900Q.1999 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 applicat
6、ion protocols 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.2631.1 (10/2003) i ITU-T Recommendation Q.2631.1 IP connection control signalling protocol Capabi
7、lity Set 1 Summary This Recommendation specifies the inter-node protocol and nodal functions that support the dynamic establishment, modification and release of individual IP connections. The IP connection control signalling protocol specified in this Recommendation can operate in public or private
8、networks over a range 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.2
9、631.1 was approved by ITU-T Study Group 11 (2001-2004) under the ITU-T Recommendation A.8 procedure on 14 October 2003. ii ITU-T Rec. Q.2631.1 (10/2003) FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications. The ITU Telec
10、ommunication Standardization 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 A
11、ssembly (WTSA), which 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
12、which fall within ITU-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 wit
13、h this Recommendation 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 la
14、nguage such as “must“ 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 thi
15、s Recommendation may 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
16、 of approval of this 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
17、the TSB patent database. 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.2631.1 (10/2003) iii CONTENTS Page 1 Scope 1 2 References. 2 2.1 Normative references 2 2.2 Informative references
18、2 3 Definitions 3 4 Abbreviations 4 5 General framework of the IPC signalling protocol 5 5.1 Interface between the IPC signalling entity and the IPC user 6 5.2 Interface between the IPC signalling entity and the generic signalling transport 9 5.3 Interface between the IPC signalling entity and layer
19、 management 10 6 Forward and backward compatibility . 11 6.1 Backward compatibility rules. 11 6.2 Forward compatibility mechanism. 11 7 Format and coding of the IPC signalling protocol 12 7.1 Coding conventions for the IPC signalling protocol 12 7.2 Format and coding of the IPC signalling protocol m
20、essages . 14 7.3 Parameter specification of the IPC signalling protocol messages 18 7.4 Field specification of the IPC signalling protocol parameters . 22 8 Procedure of the IPC signalling protocol . 31 8.1 Compatibility 31 8.2 IP connection control procedures . 35 8.3 General protocol rules 43 8.4
21、List of timers. 45 Annex A Handling of the transfer capability in conjunction with the connection set-up and modification procedures. 45 A.1 Preferred transfer capability parameter present 45 A.2 Preferred transfer capability parameter not present 46 ITU-T Rec. Q.2631.1 (10/2003) 1 ITU-T Recommendat
22、ion Q.2631.1 IP connection control signalling protocol Capability Set 1 1 Scope This Recommendation describes the IP connection control signalling protocol that supports the dynamic establishment, modification and release of individual IP connections. It also describes the maintenance procedures, th
23、e framework of the protocol, and the interactions between an IPC signalling entity and: the signalling protocol user; a signalling transport converter; and layer management. The scope of this Recommendation is illustrated in Figure 1-1. The IPC signalling protocol can be deployed over a range of sig
24、nalling transport protocol stacks. This Recommendation is based on the requirements defined in ITU-T Technical Report TRQ.2415 25 “Signalling requirements for IP connection control in radio access networks Capability Set 1“. Q.2631.1_F1-1PrimitivesIPCU-SAPGeneric primitivesPrimitivesIPC signalling m
25、essagesGST-SAPLM-SAPPrimitivesSAPIPC userIPC signallingLayermanagementLayermanagementNOTE 1 The entities and Service Access Points (SAP) bounded by the grey broken line indicate the extent of the definitionsspecified in this Recommendation.Signallingtransport converterSignallingtransportSpecific pri
26、mitivesThis Recommendation(Note 1)LM-SAPPrimitivesPrimitivesIPCU-SAPGeneric primitivesGST-SAPPrimitivesSAPIPC userIPC signallingSignallingtransport converterSignallingtransportSpecific primitivesIPC service endpoint IPC service endpointFigure 1-1/Q.2631.1 Functional architecture of IPC signalling 2
27、ITU-T Rec. Q.2631.1 (10/2003) 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 Reco
28、mmendations and other 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 the currently valid ITU-T Recommendations is regularl
29、y published. The reference to a document within this Recommendation does not give it, as a stand-alone document, the status of a Recommendation. 1 ITU-T Recommendation X.200 (1994), Information technology Open Systems Interconnection Basic Reference Model: The basic model. 2 ITU-T Recommendation X.2
30、10 (1993), Information technology Open Systems Interconnection Basic Reference Model: Conventions for the definition of OSI services. 3 ITU-T Recommendation Q.2150.0 (2001), Generic signalling transport service. 4 IETF RFC 791 (1981), Internet Protocol. 5 IETF RFC 2460 (1998), Internet Protocol, Ver
31、sion 6 (IPv6) Specification. 6 IETF RFC 768 (1980), User Datagram Protocol. 7 IETF RFC 3550 (2003), RTP: A Transport Protocol for Real-Time Applications. 8 IETF RFC 2474 (1998), Definition of the Differentiated Services Field (DS Field) in the IPv4 and IPv6 Headers. 9 IETF RFC 2597 (1999), Assured F
32、orwarding PHB Group. 10 IETF RFC 3246 (2002), An Expedited Forwarding PHB (Per-Hop Behaviour). 11 IETF RFC 3513 (2003), Internet Protocol Version 6 (IPv6) Addressing Architecture. 12 ITU-T Recommendation Q.850 (1998), Usage of cause and location in the Digital Subscriber Signalling System No. 1 and
33、the Signalling System No. 7 ISDN user part. 13 ITU-T Recommendation Q.2610 (1999), Usage of cause and location in B-ISDN user part and DSS2. 14 ITU-T Recommendation E.164 (1997), The international public telecommunication numbering plan. 15 ITU-T Recommendation X.213 (2001), Information Technology O
34、pen Systems Interconnection Network service definition. 16 ITU-T Recommendation Q.542 (1993), Digital exchange design objectives Operations and maintenance. 17 ITU-T Recommendation Y.1221 (2002), Traffic control and congestion control in IP-based networks. 2.2 Informative references 20 ITU-T Recomme
35、ndation Q.2630.1 (1999), AAL type 2 signalling protocol Capability Set 1. 21 ITU-T Recommendation Q.2630.2 (2000), AAL type 2 signalling protocol Capability Set 2. ITU-T Rec. Q.2631.1 (10/2003) 3 22 ITU-T Recommendation Q.2150.1 (2001), Signalling transport converter on MTP3 and MTP3b. 23 ITU-T Reco
36、mmendation Q.2150.2 (2001), Signalling Transport Converter on SSCOP and SSCOPMCE. 24 ITU-T Recommendation Q.2150.3 (2002), Signalling Transport Converter on SCTP. 25 ITU-T Q-series Recommendations Supplement 43 (2003), Technical Report TRQ.2415: Transport control signalling requirements Signalling r
37、equirements for IP connection control in radio access networks Capability Set 1. 26 ITU-T Q-series Recommendations Supplement 44 (2003), Technical Report TRQ.2800: Transport control signalling requirements Signalling requirements for AAL type 2 to IP interworking, Capability Set 1. 27 IETF RFC 3260
38、2002), New Terminology and Clarifications for Diffserv. 28 3GPP TS 25.414, 3rdGeneration Partnership Project, Technical Specification Group Radio Access Network, UTRAN Iu interface data transport and transport signalling (Release 5). 29 3GPP TS 25.426, 3rdGeneration Partnership Project, Technical S
39、pecification Group Radio Access Network, UTRAN Iur and Iub interface data transport Release of IP connections; and Modification of IP connection resources. The IPC signalling entity is independent of the IPC user. 5.1.2 Primitives between IPC signalling entity and the IPC user The IPCU-SAP primitive
40、s are used: 1) by the originating IPC user to initiate IP connection establishment and by either of the IPC users to initiate the release of a connection; 2) by the terminating IPC signalling entity to indicate an incoming IP connection establishment request to the terminating IPC user and by either
41、 of the IPC signalling entities to notify its corresponding IPC user of the release of a connection; 3) by either IPC user to initiate an IP connection resource modification and by the modification terminating IPC user to respond to a modification request; 4) by either IPC signalling entity to indic
42、ate a modification of the IP connection resource to its corresponding IPC user and to notify the modification initiating IPC user of the successful or unsuccessful modification. NOTE When sending a primitive between the signalling protocol and its user, the primitive needs to be associated with a pa
43、rticular IP connection instance. The mechanism used for this binding is considered to be an implementation detail and, therefore, is outside the scope of this Recommendation. The services are provided through the transfer of primitives, which are summarized in Table 5-1, and are defined after the ta
44、ble. The IPC user passes information in parameters in the primitives. Some of those parameters are mandatory and some are optional; the appropriate usage of the parameters is described in clause 8. ITU-T Rec. Q.2631.1 (10/2003) 7 Table 5-1/Q.2631.1 Primitives and parameters exchanged between the IPC
45、 signalling entity and the IPC user Primitive Type Generic name Request Indication Response Confirm ESTABLISH DEA, SUGR, SUT, MSTC, TC, PTC, IPQOS, IPTT, CP SUGR, SUT, MSTC, TC, PTC, IPQOS, IPTT, CP MSTC MSTC RELEASE Cause Cause Not defined Cause MODIFY TC TC MODIFY-REJECT Not defined Not defined Ca
46、use Cause This primitive has no parameters. a) ESTABLISH.request: This primitive is used by the originating IPC user to initiate the establishment of a new IP connection and optionally request the capability for subsequent modification to be performed on this IP connection. b) ESTABLISH.indication:
47、This primitive is used by the terminating IPC signalling entity to indicate an incoming IP connection establishment request to the terminating IPC user and optionally indicate that subsequent modification may be performed on this IP connection. c) ESTABLISH.response: This primitive is used by the te
48、rminating IPC user to indicate to the terminating IPC signalling entity that the establishment request has been successful. d) ESTABLISH.confirm: This primitive is used by the originating IPC signalling entity to indicate to the originating IPC user that the IP connection (which was previously reque
49、sted by the originating IPC user) has successfully been established and optionally indicate that the established connection is capable of subsequent modification. e) RELEASE.request: This primitive is used by the IPC user to initiate clearing of an IP connection. f) RELEASE.indication: This primitive is used by the IPC signalling entity to indicate that an IP connection has been released. g) RELEASE.confirm: This primitive is used by the originating IPC s
