GB/T 3971.3-1983
Active
GB/T 21639-2008
Active
National standards
GB/T 21639-2008 The technical requirements of video conferencing service for IP-based network
GB/T 21639-2008 The technical requirements of video conferencing service for IP-based network
Basic Information
Standard Code:
GB/T 21639-2008
Standard Type:
National standards
Standard Status:
Active
is_force_gb:
no
CCS Name:
Optical communication equipment
ICS Name:
Telecommunications system
Publish Date:
2008-04-10
Implement Date:
2008-11-01
Pages:
62 pages
Scope
This standard specifies the architecture, typical protocols, numbering methods, network performance requirements, and interoperability between different operators' IP-based video conferencing systems of IP-based video conferencing systems. This standard is applicable to IP-based video conferencing systems.
Development Information
Related Standards
GB/T 3974-1983
Abolished
GB/T 3974-1983 Telephone transmission interference allowances for long-distance high-capacity analogue microwave communication systems
GB/T 5581-1985
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GB/T 13722-1992
Replaced
GB/T 13722-1992 Performance requirements and testing methods for power supplies used in the mobile communication
GB/T 3972-1992
Abolished
GB/T 3972-1992 Relays for crossbar telephone switching systems
GB/T 15410-1994
Abolished