1、 INTERNATIONAL TELECOMMUNICATION UNION ITU-T Q.2632.1TELECOMMUNICATION 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 Interworking between AAL type
2、2 signalling protocol Capability Set 2 and IP connection control signalling protocol Capability Set 1 ITU-T Recommendation Q.2632.1 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
3、 FUNCTIONS AND INFORMATION FLOWS FOR SERVICES IN THE ISDN Q.60Q.99 CLAUSES 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 SY
4、STEM No. 7 Q.700Q.799 Q3 INTERFACE Q.800Q.849 DIGITAL SUBSCRIBER SIGNALLING 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 SPECIFI
5、CATIONS OF SIGNALLING RELATED TO BEARER INDEPENDENT CALL CONTROL (BICC) Q.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 signal
6、ling and network signalling and interworking Q.2600Q.2699 B-ISDN application 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.2632.1 (10/2003) i ITU-T
7、 Recommendation Q.2632.1 Interworking between AAL type 2 signalling protocol Capability Set 2 and IP connection control signalling protocol Capability Set 1 Summary This Recommendation describes the interworking between the AAL type 2 signalling protocol and the IP connection control signalling prot
8、ocol. This Recommendation describes the mapping tables and diagrams which support interworking between the two protocols for call set-up, modification and clear down. Source ITU-T Recommendation Q.2632.1 was approved by ITU-T Study Group 11 (2001-2004) under the ITU-T Recommendation A.8 procedure on
9、 14 October 2003. ii ITU-T Rec. Q.2632.1 (10/2003) FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications. The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of ITU. ITU-T is responsible for stud
10、ying 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 meets every four years, establishes the topics for study by the ITU-T study grou
11、ps 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-Ts purview, the necessary standards are prepared on a collaborative basis with I
12、SO 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 is voluntary. However, the Recommendation may contain certain mandatory provisio
13、ns (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“ and the negative equivalents are used to express requirements. The use of such w
14、ords 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 involve the use of a claimed Intellectual Property Right. ITU takes no position c
15、oncerning 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, ITU had not received notice of intellectual property, protected b
16、y 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. ITU 2004 All rights reserved. No part of this publication may be reproduced,
17、by any means whatsoever, without the prior written permission of ITU. ITU-T Rec. Q.2632.1 (10/2003) iii CONTENTS Page 1 Scope 1 2 References. 2 2.1 Normative References 2 2.2 Informative references 2 3 Abbreviations 2 4 General statements on interworking . 4 5 Successful connection set-up 5 5.1 Mapp
18、ing of the establish request message . 5 5.2 Mapping of the establish confirm message 7 6 Unsuccessful connection set-up 8 6.1 Mapping of the RLC message 8 7 Connection release 9 7.1 Mapping of the REL message 9 7.2 Mapping of the RLC message 10 8 Successful modification 10 8.1 Mapping of the MOD me
19、ssage. 10 8.2 Mapping of the MOA message. 11 9 Unsuccessful modification . 12 9.1 Mapping of the MOR message. 12 10 Reset . 13 10.1 Reset initiated in AAL type 2/IP network 13 10.2 Reset initiated by the IWU . 15 11 Messages requiring no interworking 16 11.1 AAL type 2 messages. 16 11.2 IPC messages
20、 17 Appendix I Interworking of AAL type 2 link characteristics and SSISU parameters with IPC IP transfer capabilities. 17 I.0 Guidelines and definitions 17 I.1 Interworking for AAL type 2 to IP. 19 I.2 Interworking for IP to AAL type 2. 21 ITU-T Rec. Q.2632.1 (10/2003) 1 ITU-T Recommendation Q.2632.
21、1 Interworking between AAL type 2 signalling protocol Capability Set 2 and IP connection control signalling protocol Capability Set 1 1 Scope This Recommendation defines the interworking relationship between the AAL type 2 signalling protocol Capability Set 2 and the IP connection control signalling
22、 protocol. For the purpose of this interworking, AAL type 2 signalling is defined in ITU-T Rec. Q.2630.2 1 and subject to restrictions stated in TRQ.2800 3. For the purpose of this interworking, IP Connection Control signalling is defined in ITU-T Rec. Q.2631.1 2. The interworking between the above
23、two signalling protocols typically may occur in 3GPP UTRANs with AAL type 2 and IP network portions connected via an Interworking Unit. The objective of this ITU-T Recommendation is to specify the interworking between the AAL type 2 protocol and the IP Connection Control signalling protocol. Interwo
24、rking is shown as message arrow diagrams. The diagrams included represent a sample of typical situations. Mapping tables are provided to define the relationship between AAL type 2 protocol messages and parameters, on the one hand, and IP Connection Control signalling protocol messages and parameters
25、 on the other hand. Tables are provided for each AAL type 2 message that maps onto an IP Connection Control message. These tables also specify the mapping of parameters, which are carried by the concerned messages. Parameters that are of local significance only, i.e. are not mapped onto parameters i
26、n the other signalling system, are not shown. The arrow diagrams used in this Recommendation show the message movement for interworking the bearer control protocols of AAL type 2 signalling and IP Connection Control signalling. The working inside of the exchanges will not be shown, but rather the ex
27、ternal stimulus to the exchange only (see Figures 1 and 2). Q.2632.1_F01IWUAAL type 2 node IPC service endpointincoming AAL type 2 signalling messageoutgoing IPC signalling messageFigure 1/Q.2632.1 AAL type 2 to IPC signalling interworking 2 ITU-T Rec. Q.2632.1 (10/2003) Q.2632.1_F02IWUAAL type 2 no
28、de IPC service endpointoutgoing AAL type 2 signalling messageincoming IPC signalling messageFigure 2/Q.2632.1 IPC to AAL type 2 signalling interworking 2 References 2.1 Normative References The following ITU-T Recommendations and other references contain provisions which, through reference in this t
29、ext, constitute provisions of this Recommendation. At the time of publication, the editions indicated were valid. All Recommendations and other references are subject to revision; users of this Recommendation are therefore encouraged to investigate the possibility of applying the most recent edition
30、 of the Recommendations and other references listed below. A list of the currently valid ITU-T Recommendations is regularly 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 Q.2630.2 (
31、2001), AAL type 2 signalling protocol Capability Set 2. 2 ITU-T Recommendation Q.2631.1 (2003), IP connection control signalling protocol Capability Set 1. 2.2 Informative references 3 ITU-T Q-series Recommendations Supplement 44 (2003), Technical Report TRQ.2800: Transport control signalling requir
32、ements Signalling requirements for AAL type 2 to IP interworking Capability Set 1. 3 Abbreviations This Recommendation uses the following abbreviations: 3GPP 3rd Generation Partnership Project A2EA AAL type 2 Service Endpoint Address A2IP AAL type 2 IP AAL ATM Adaptation Layer AAL2 AAL type 2 ATM As
33、ynchronous Transfer Mode BLC Block Confirm Message BLO Block Request Message CAU Cause Parameter CEID AAL type 2 Connection Element Identifier ITU-T Rec. Q.2632.1 (10/2003) 3 CFN ConFusioN message CPS (AAL type 2) Common Part Sublayer DEAE Destination Endpoint E.164 Address DEAX Destination Endpoint
34、 X.213 Address ECF Establish Confirm Message ERQ Establish Request Message ESEA Destination E.164 Service Endpoint Address parameter HBx Header bit rate associated with x IP Internet Protocol IPC IP Connection Control IPHL Total length of the header of an IP packet IPQOS IP Quality of Service parame
35、ter IPTT IP Transport Type parameter IWU InterWorking Unit LC (AAL type 2) Link Characteristics parameter MAX Maximum function MIN Minimum function MOA Modification Acknowledge message MOD Modification Request message MOR Modification Reject message MSLC Modify Support for Link Characteristics param
36、eter MSSSI Modify Support for SSCS Information parameter MSTC Modify Support for IP Transfer Capability parameter NSEA Destination NSAP Service Endpoint Address parameter PLC Preferred Link Characteristics parameter PSSCS Preferred SSCS Information parameter PSSIAE Preferred Service Specific Informa
37、tion (Audio Extended) parameter PSSIME Preferred Service Specific Information (Multirate Extended) parameter PT Path Type parameter PTC Preferred IP Transfer Capability PTC-DBW Dedicated Bandwidth Preferred IP Transfer Capability PTC-SBW Statistical Bandwidth Preferred IP Transfer Capability REL Rel
38、ease Request Message RES Reset Request Message RLC Release Confirm Message RSC Reset Confirm Message SAR Segmentation and Reassembly (Sublayer) 4 ITU-T Rec. Q.2632.1 (10/2003) SDU Service Data Unit SSCS Service Specific Convergence Sublayer SSIA Service Specific Information (Audio) parameter SSIAE S
39、ervice Specific Information (Audio Extended) parameter SSIM Service Specific Information (Multirate) parameter SSIME Service Specific Information (Multirate Extended) parameter SSISA Service Specific Information (SAR-assured) parameter SSISU Service Specific Information (SAR-unassured) parameter SSS
40、AR Segmentation and Reassembly Service Specific Convergence Sublayer SUCI Served User Correlation ID parameter SUGR Served User Generated Reference parameter SUT Served User Transport parameter TC (IP) Transfer Capability TC-DBW Dedicated Bandwidth IP Transfer Capability TC-SBW Statistical Bandwidth
41、 IP Transfer Capability TCI Test Connection Indication parameter UBC Unblock Confirm Message UBL Unblock Request Message UTRAN UMTS Terrestrial Radio Access Network 4 General statements on interworking No ATM or AAL type 2 specific parameters defined for AAL type 2 signalling will be carried in the
42、IP connection control signalling. No IP specific parameters defined for IP connection control signalling will be carried in the AAL type 2 signalling. All AAL type 2 and all IP connection control messages carry message compatibility information. All AAL type 2 and all IP connection control parameter
43、s carry parameter compatibility information. Through-connection in the IWU will occur immediately after either the AAL type 2 or the IP connection control signalling sends the Establish Request Message (ERQ). According to TRQ.2800 3 interworking is specified for AAL type 2 signalling with SSCS suppo
44、rt restricted to SSSAR unassured. Therefore, reception of any of the parameters listed in Table 1 at the IWU shall lead to the behaviour as specified there. Furthermore, none of these parameters shall be generated at the IWU in AAL type 2 signalling messages. ITU-T Rec. Q.2632.1 (10/2003) 5 Table 1/
45、Q.2632.1 List of non-supported AAL type 2 parameters AAL type 2 parameter Action on reception AAL type 2 side IP side MSSSI in ERQ and ECF messages Discard parameter, do not send notification As specified in 5.1.1 and 5.2 PSSIAE in ERQ message Discard parameter, do not send notification As specified
46、 in 5.1.1 PSSIME in ERQ message Discard parameter, do not send notification As specified in 5.1.1 SSIAE in ERQ message Release connection, do not send notification SSIA in ERQ message Release connection, do not send notification SSIME in ERQ message Release connection, do not send notification SSIM
47、in ERQ message Release connection, do not send notification SSISA in ERQ message Release connection, do not send notification SUCI in MOD and MOA messages Discard parameter, do not send notification As specified in 8.1.1 and 8.2 NOTE These parameters are not shown in the mapping tables. 5 Successful
48、 connection set-up 5.1 Mapping of the establish request message 5.1.1 Connection establishment initiated from the AAL type 2 network Q.2632.1_F03IWUAAL type 2 node IPC service endpointERQ ERQFigure 3/Q.2632.1 ERQ from AAL type 2 network 6 ITU-T Rec. Q.2632.1 (10/2003) Table 2/Q.2632.1 Mapping of ERQ
49、 parameters (ERQ initiated from AAL2) Incoming AAL type 2 ERQ Outgoing IPC ERQ ESEA (Note 1) DEAE (Note 2) NSEA (Note 1) DEAX (Note 2) LC TC (Note 3) PLC PTC (Note 3) MSLC MSTC SSISU (Note 3) SUGR SUGR SUT SUT TCI Not carried PT Not carried (Note 4) IPQOS (Note 4) IPTT (Note 5) NOTE 1 Only one of these parameters is present. NOTE 2 Only one of these parameters is present. Values may be taken unchanged or with format conversion (E.164 to NSAP, NSAP to E.164) or derived by address translation with and with
