 - H.323 is a standard approved by the International Telecommunication Union (ITU) in 1996 to promote compatibility in videoconference transmissions over IP networks. H.323 was originally promoted as a way to provide consistency in audio, video and data packet transmissions in the event that a local area network (LAN) did not provide guaranteed service quality (QoS). Although it was doubtful at first whether manufacturers would adopt H.323, it is now considered to be the standard for interoperability in audio, video and data transmissions as well as Internet phone and voice-over-IP (VoIP) because it addresses call control and management
for both point-to-point and multipoint conferences as well as
gateway administration of media traffic, bandwidth and user
participation.
H.323, which describes how multimedia communications occur between terminals, network equipment and services, is part of a larger group of ITU recommendations for multi-media interoperability called H.3x. The latest of these recommendations, H.248, is a recommendation to
provide a single standard for the control of gateway devices in
multi-media packet transmissions to allow calls to connect from a
LAN to a Public Switched Telephone Network (PSTN), as well as to
other standards-based terminals. This recommendation was announced
in August 2000, by the ITU-TU Study Group 16 and the Megaco Working
Group of the Internet Engineering Task Force (IETF).
| CONTRIBUTORS: |
Ron Yakuel |
| LAST UPDATED: |
10 Apr 2006
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