ITU-T J 171 1-2005 IPCablecom trunking gateway control protocol (TGCP) Profile 1 (Study Group 9)《(预发布)IPCablecom中继网关控制协议(TGCP)轮廓1 研究组9》.pdf
《ITU-T J 171 1-2005 IPCablecom trunking gateway control protocol (TGCP) Profile 1 (Study Group 9)《(预发布)IPCablecom中继网关控制协议(TGCP)轮廓1 研究组9》.pdf》由会员分享,可在线阅读,更多相关《ITU-T J 171 1-2005 IPCablecom trunking gateway control protocol (TGCP) Profile 1 (Study Group 9)《(预发布)IPCablecom中继网关控制协议(TGCP)轮廓1 研究组9》.pdf(130页珍藏版)》请在麦多课文档分享上搜索。
1、 International Telecommunication Union ITU-T J.171.1TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (11/2005) SERIES J: CABLE NETWORKS AND TRANSMISSION OF TELEVISION, SOUND PROGRAMME AND OTHER MULTIMEDIA SIGNALS IPCablecom IPCablecom trunking gateway control protocol (TGCP): Profile 1 ITU-T Recommen
2、dation J.171.1 ITU-T Rec. J.171.1 (11/2005) i ITU-T Recommendation J.171.1 IPCablecom trunking gateway control protocol (TGCP): Profile 1 Summary This Recommendation describes an IPCablecom profile of an Application Programming Interface (API) called a Media Gateway Control Interface (MGCI) and a co
3、rresponding protocol (MGCP) for controlling voice-over-IP (VoIP) PSTN gateways from external call control elements. This is one of the two profiles referenced in ITU-T Rec. J.171.0. The second profile is specified in ITU-T Rec. J.171.2. The MGCP assumes a call control architecture where the call con
4、trol “intelligence“ is outside the gateways and handled by external call control elements. The IPCablecom profile as described in this Recommendation will be referred to as the IPCablecom Trunking Gateway Control Protocol (TGCP). Source ITU-T Recommendation J.171.1 was approved on 29 November 2005 b
5、y ITU-T Study Group 9 (2005-2008) under the ITU-T Recommendation A.8 procedure. ii ITU-T Rec. J.171.1 (11/2005) FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications. The ITU Telecommunication Standardization Sector (ITU-
6、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 meets every four ye
7、ars, 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-Ts purview, the nec
8、essary 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 is voluntary. Howev
9、er, 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“ and the negative eq
10、uivalents 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 involve the use of a
11、 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 Recommendation, ITU
12、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 database. ITU 2006 All rig
13、hts reserved. No part of this publication may be reproduced, by any means whatsoever, without the prior written permission of ITU. ITU-T Rec. J.171.1 (11/2005) iii CONTENTS Page 1 Scope 1 2 References. 1 2.1 Normative references 1 2.2 Informative references 1 3 Definitions 2 4 Abbreviations and acro
14、nyms 2 5 Convention 2 5.1 Background. 3 6 Introduction 4 6.1 Relation with other IPCablecom standards 5 6.2 Relation to RFC 3435 and ABNF grammar. 6 7 Media Gateway Control Interface (MGCI) 6 7.1 Model and naming conventions 6 7.2 SDP use 12 7.3 Gateway control functions 13 7.4 States, failover and
15、race conditions 36 7.5 Return codes and error codes . 51 7.6 Reason codes 52 7.7 Use of local connection options and connection descriptors 53 8 Media gateway control protocol . 56 8.1 General description. 56 8.2 Command header 57 8.3 Response header formats 69 8.4 Session description encoding . 72
16、8.5 Transmission over UDP . 83 8.6 Piggybacking 85 8.7 Transaction identifiers and three-way handshake 85 8.8 Provisional responses . 86 9 Security. 87 Annex A Event packages 88 A.1 ISUP trunk package 88 Appendix I Mode interactions. 92 Appendix II Example command encodings 94 II.1 NotificationReque
17、st 94 II.2 Notify 94 II.3 CreateConnection . 94 iv ITU-T Rec. J.171.1 (11/2005) Page II.4 ModifyConnection 96 II.5 DeleteConnection (from the Media Gateway Controller) 97 II.6 DeleteConnection (from the trunking gateway). 97 II.7 DeleteConnection (multiple connections from the Media Gateway Controll
18、er) 97 II.8 AuditEndpoint 98 II.9 AuditConnection. 99 II.10 RestartInProgress 99 Appendix III Example Call Flow 101 Appendix IV Endpoint requirements 104 IV.1 Connection modes supported . 104 Appendix V Compatibility information 105 V.1 NCS compatibility 105 V.2 MGCP compatibility 105 Appendix VI AB
19、NF grammar for TGCP 107 Appendix VII Electronic surveillance. 114 VII.1 MGC. 114 VII.2 MG 114 Appendix VIII Example event packages 116 VIII.1 MF FGD Operator Services package . 116 VIII.2 MF Terminating Protocol package. 119 BIBLIOGRAPHY 122 ITU-T Rec. J.171.1 (11/2005) 1 ITU-T Recommendation J.171.
20、1 IPCablecom trunking gateway control protocol (TGCP): Profile 1 1 Scope This Recommendation describes an IPCablecom profile of an Application Programming Interface (API) called a Media Gateway Control Interface (MGCI) and a corresponding protocol (MGCP) for controlling voice-over-IP (VoIP) PSTN gat
21、eways from external call control elements. This is one of the two profiles referenced in ITU-T Rec. J.171.0. The second profile is specified in ITU-T Rec. J.171.2. The MGCP assumes a call control architecture where the call control “intelligence“ is outside the gateways and handled by external call
22、control elements. The IPCablecom profile as described in this Recommendation will be referred to as the IPCablecom Trunking Gateway Control Protocol (TGCP). This Recommendation is based on the IPCablecom network-based call signalling Recommendation (ITU-T Rec. J.162), and IETF RFC 2705, Media Gatewa
23、y Control Protocol (MGCP). This Recommendation, which defines the IPCablecom TGCP protocol, constitutes a specification that is independent of MGCP. The TGCP profile of MGCP is strictly and solely defined by the contents of this Recommendation. 2 References 2.1 Normative references The following ITU
24、-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 references are subject to revision; users of this Recommendatio
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