翻訳と辞書 |
H.323 The {ITU-T standard} for sending {voice} (audio) and video using IP on a LAN without QoS. H.323 includes {Q.931} for call setup, {H.225} for call signalling, {H.245} for exchanging terminal capabilities, RTP/{RTCP} for packet streaming, {G.711}/{G.712} for CODECs, and several other {protcols}, many of which need to be negotiated to setup a simple voice call. The complexity of H.323 has lead to the IETF proposing the simpler alternatives SIP and MGCP/{Megaco}. (2003-11-30)
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