Encyclopedia > H.323

  Article Content


H.323 is an umbrella recommendation from the ITU-T, that defines the protocols to provide audiovisual communication sessions on any packet networks. It is currently implemented by various Internet real time applications as NetMeeting, Voxilla (for Linux). It is a part of the H.32X series of protocols which also address communications over ISDN and PSTN. A challenger to H.323 is SIP a standard from IETF. Both protocols are used in InternetTelephony or IPTelephony[?]

H.323 references many other ITU-T protocols like;

  • H.323 to describe the system, the call model and call signaling procedures.
  • H.225[?] protocol is used to describe the media (audio and video), the stream packetization, media stream synchronization and control message formats.
  • the H.245[?] describes the messages and procedures used for opening and closing logical channels for audio, video and data, capability exchange, control and indications.

All Wikipedia text is available under the terms of the GNU Free Documentation License

  Search Encyclopedia

Search over one million articles, find something about almost anything!
  Featured Article
Sanskrit language

... n) Labial (with the lips[?]) (p, ph, b, bh, m) It also has four semivowels: y, r, l, v. All of these but r have nasalized forms. Sanskrit also has palatal, ...

This page was created in 36.9 ms