GB/T 21640-2008Technical standards for cooperation between equipments of IP-based video conference system (English PDF)

National Standard of the People's Republic of China

ICS

33.040

Classification

M 33

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Contents

• Introduction
• 1 Scope
• 2 Normative references
• 3 Terms and definitions
• 4 Abbreviations
• 5 RTP message and its detailed parameters
• 6 RAS messages and their detailed parameters
• 6.1 gatekeeper discovery message
• 6.2 registration message
• 6.3 deregistration message
• 6.4 Access Authentication message
• 6.5 Address Resolution Messages
• 6.6 Demolition Connect Message
• 6.7 Bandwidth Management message
• 15
• 6.8 Status Messages
• 15
• 6.9 Resources Report message
• 6.10 Control Message
• 7 ITU-TQ. 931 messages and their parameters in detail
• 7.1 Setup-UUIE
• 7.2 CalProceeding-UUIE
• 7.3 Alerting-UUIE
• 7.4 Connect-UUIE
• 7.5 ReleaseComplete-UUIE
• 8 ITU-TH. 245 messages and their parameters in detail
• 8.1 Logical Channel Setup Related news
• 8.2 meeting request and response messages
• 8.3 Conference command
• 23
• 8.4 Miscellaneous instructions
• 8.5 Meeting instructions
• 9 ITU-TH. 248 messages
• 9.1 Commands
• 9.2 descriptor
• 9.3 ITU-TH. 248 28 package
• 10 ITU-TH. 281, ITU-TH. 282, ITU-TH. 283 message and its detailed parameters (Device Control)
• 10.1 ITU-TH. 281 Message Structure
• 11 RADIUS protocol and parameters
• 38
• 12.1 Registration Process
• 12.2 41 conference reservation process
• 12.3 The meeting was convened Process
• 12.5 Logout Process
• 12.6 Chairman of the flow control
• 13 voice/video encoder
• 13.1 speech coding and frame structure
• 13.2 image coding and frame structure
• 14 error value and reason code
• 15 ITU-TH. Timer 248 messages and the number of retransmissions
• 17 ITU-TQ. Timer 931 messages and the number of retransmissions