H.323
H.323 is a recommendation from the ITU Telecommunication Standardization Sector (ITU-T) that defines the protocols to provide audio-visual communication sessions on any packet network. The H.323 standard addresses call signaling and control, multimedia transport and control, and bandwidth control for point-to-point and multi-point conferences.
Key facts
- Technology standard.title
- H.323
- Technology standard.long_name
- Packet-based multimedia communications systems
- Technology standard.image
- H323_1gk.gif
- Technology standard.status
- In force
- Technology standard.version
- 8
- Technology standard.organization
- ITU-T
- Technology standard.related_standards
- Q.931
via Wikipedia infobox
~24 min read
Article
25 sectionsContents
- History
- Protocols
- Codecs
- Architecture
- H.323 network elements
- Terminals
- Multipoint control units
- Gateways
- Gatekeepers
- Border elements and peer elements
- H.323 network signaling
- H.225.0 call signaling
- RAS signaling
- H.245 call control
- Capability negotiation
- Master/slave determination
- Logical channel signaling
- Fast connect
- Use cases
- H.323 and voice over IP services
- H.323 and videoconference services
- Alternatives
- See also
- References
- External links
H.323 is a recommendation from the ITU Telecommunication Standardization Sector (ITU-T) that defines the protocols to provide audio-visual communication sessions on any packet network. The H.323 standard addresses call signaling and control, multimedia transport and control, and bandwidth control for point-to-point and multi-point conferences.
It is widely implemented by voice and videoconferencing equipment manufacturers, is used within various Internet real-time applications such as GnuGK and NetMeeting and is widely deployed worldwide by service providers and enterprises for both voice and video services over IP networks.