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GB/T 21641-2008 English PDF

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GB/T 21641-2008: Technique requirements of video conferencing system inter working between different technologies
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Basic data

Standard ID GB/T 21641-2008 (GB/T21641-2008)
Description (Translated English) Technique requirements of video conferencing system inter working between different technologies
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard M33
Classification of International Standard 33.040
Word Count Estimation 49,461
Date of Issue 2008-04-10
Date of Implementation 2008-11-01
Quoted Standard GB/T 15845.4-2003; GB/T 17904.1-1999; GB/T 17154.1-1997; GB/T 18119-2000; GB/T 21639-2008; GB/T 21640-2008; YD/T 822-1996; YDN 038-1997; YDN 038.1-1999; ITU-T H.221; ITU-T H.223; ITU-T H.224-2000; ITU-T H.225.0-2000; ITU-T H.230; ITU- T H.242; ITU-T H.245-2000; ITU-T H.248; ITU-T H.262; ITU-T H.281-1994; ITU-T H.282-1999; ITU-T H.310-1998; ITU-T H.321-1998; ITU-T H.322-1996; ITU-T H.323-2000; ITU-T H.323 ANNEXQ-2001; ITU-T H.324-2002; ITU-T G.711-1988; ITU-T G.722-1988; ITU-T G.723.1-1996; ITU-T G.728-2002; ITU-T G.729-1996; ITU-T Q.921; ITU-T Q.922; ITU-T Q.931-1998; ITU-T T.120-1996; ITU-T V.70; ITU-T V.75; ITU-T V.76
Regulation (derived from) Announcement of Newly Approved National Standards No. 5, 2008 (No. 118 overall)
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary This standard specifies the IP network-based video conferencing system with non- IP network video conference terminals (including GB/T 15845. 4-2003 video terminal and the ITU-T H. 324 video terminal) interworking architecture, the basic requirements interworking, media interworking requirements, interworking protocol requirements, billing interoperability and interworking safety requirements. This standard applies to IP-based video conferencing system.

GB/T 21641-2008: Technique requirements of video conferencing system inter working between different technologies


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Technique requirements of video conferencing system inter working between different technologies ICS 33.040 M33 National Standards of People's Republic of China Based on emergency video conference systems of different technologies Interoperability Technical Requirements Posted 2008-04-10 2008-11-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Table of Contents

Introduction Ⅲ 1 Scope 1 2 Normative references 1 3 Terms and definitions 2 4 Abbreviations 3 5 Interworking video conferencing network architecture 5 The basic requirements for interoperability 6 6 6.1 Overview 6 6.2 Interworking voice terminal 7 GB 6.3 ISDN interworking on/T 15845.4-2003 videophone terminal 7 ITU-TH 6.4 GSTN on. Interworking 324 videophone terminal 7 Exchange videophone terminal (ITU-TH.321 and ITU-TH.310) of 6.5 ATM on the (optional) 8 6.6 Quality of service guarantees on the ITU-TH LAN. 322 Interworking videophone terminal (optional) 8 ITU-TV 6.7 GSTN on. 70 exchange voice data terminal (optional) 9 ITU-TT 6.8 on packet networks. Interworking 120 terminals (optional) 9 ITU-TH 6.9 ATM on. 323 transmission media interworking gateway (optional) 9 7 media interworking requirements 9 7.1 audio and video processing basic requirements 9 7.2 bitstream format to handle basic requirements 11 8 QoS interworking requirements 20 8.1 echo suppression claim 20 Terminating the input buffer of 8.2 Dynamic Adjustment 20 8.3 voice and video synchronization requirements 20 8.4 Speech coding dynamically switch (optional) 21 9 interworking protocol requires 21 9.1 RAS message 21 9.2 ITU-TH. 225.0 21 messages 9.3 ITU-TH. 245 messages 21 9.4 ITU-TH. 282 Agreement 21 9.5 ITU-TH. 281 Agreement 21 9.6 ITU-TH. 224 Agreement 21 9.7 ISDNDSS1 message 21 9.8 ISUP message 21 9.9 ITU-TH. 323 exchange agreements with other agreements 22 9.10 ITU-TH. 323 exchange agreements with GB/T 15845.4-2003 agreement 23 9.11 ITU-TH. 323 agreement with the ITU-TH. 324 protocol interworking requirements 31 9.12 Remote Control protocol mapping 38 10 Interworking billing requirements 39 Safety requirements for interoperability 11 39 Appendix A (normative appendix) ITU-TH. 221 recommendations BAS signal capability value 40 A. 1 Overview 40 A. 2 BAS signal capability value 40

Foreword

This standard is one "IP video conferencing systems" series of standards. The name of the family structure and standards are expected as follows. --- General technical requirements of IP-based network video conferencing systems; --- IP-based video-conferencing equipment interoperability technical requirements; --- Interworking based on the technical requirements of the emergency video conference systems of different technologies; --- IP-based video conferencing systems network equipment technology requirements - Part 1. Multipoint Controller (MC); --- IP-based video conferencing systems network equipment technology requirements - Part 2. Multi-Processor (MP); --- Based video conferencing system used in IP networks - Part 3. Gatekeeper (GK); --- IP-based video conferencing systems network equipment technology requirements - Part 4. Multipoint Control Unit (MCU); --- IP-based video conferencing system terminal technical requirements. Appendix A of this standard is a normative appendix. This standard was proposed by the Ministry of Information Industry. The standard by the China Communications Standards Association. This standard was drafted. Ministry of Information Industry Institute of Telecommunications Transmission, ZTE Corporation. Drafters of this standard. Jiang Lintao, Lijian Fang, Wu Jing, Yang, Sun Mingjun, Wu Yongming, Nie Xiuying, Liu said?. Based on emergency video conference systems of different technologies Interoperability Technical Requirements

1 Scope

This standard specifies the video conferencing terminal IP-based network video conferencing system and non-IP networks (including GB/T 15845.4-2003 video terminals and ITU-TH. 324 video terminal) interworking architecture, the basic requirements for interworking, media interworking Requirements, interworking protocol requirements, interoperability and interconnection billing safety requirements. This standard applies to IP-based video conferencing systems.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard. GB/T 15845.4-2003 requirements of audiovisual terminals narrowband audiovisual systems and terminal equipment (ITU-TH.320 (1999), IDT) GB/T 17154.1-1997 ISDN User - Basic Call Part 1 specification and test method for network interface layer control Score. Layer specification for basic call control GB/T 17904.1-1999 ISDN User - Part 1 network interface data link layer specification and conformance testing method Score. user - network interface data link layer specification GB/T 18119-2000 low bit rate communication video coding (idtITU-TH.263-1998) GB/T 21639-2008 General Technical Requirements for IP-based video conferencing systems GB/T 21640-2008 IP-based video conferencing systems network equipment interoperability technical requirements YD/T 822-1996 P × 64kbit/s encoding video conferencing (idtITU-TH.261-1993) YDN038-1997 domestic NO. 7 signaling system technical specification Integrated Services Digital Network User Part (ISUP) YDN038.1-1999 domestic NO. 7 signaling system technical specification Integrated Services Digital Network User Part (ISUP) (Supplementary Amendment) ITU-TH. 221 audiovisual teleservices frame structure 64kbit/s ~ 1920kbit/s path ITU-TH. 223 low bit-rate multimedia communication multiplexing protocol ITU-TH. 224-2000 using H. Single industrial control protocol pragmatic 221LSD/HSD/MLP channels ITU-TH. Packing 225.0-2000 does not guarantee the quality of service for local online video telephone system and media streams Synchronize ITU-TH. 230 audiovisual system frame synchronization control signal and the indication signal ITU-TH. 242 use within 2Mbit/s digital channels established system of communication between audiovisual terminals ITU-TH. 245-2000 control protocol for multimedia communication ITU-TH. 248 Media Gateway Protocol ITU-TH. 262 information technology of moving pictures and associated audio information - Generic coding - Part 2. Video ITU-TH. 281-1994 using H. 224 videoconferencing end camera control protocol ITU-TH. 282-1999 multimedia communication Remote Device Control Protocol ITU-TH. 310-1998 broadband video communications systems and terminals ITU-TH. 321-1998 H. Videophone terminal adapter 320 to the B-ISDN network

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