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.
abbreviation 1. hate
1. hectare; hectares. [hah] /hɑ/ interjection 1. (used as an exclamation of surprise, interrogation, suspicion, triumph, etc.) Symbol, Chemistry, Physics. 1. . [hah] /hɑ/ noun 1. the 26th letter of the Arabic alphabet, representing a glottal spirant consonant sound. [khah] /xɑ/ noun 1. the sixth letter of the Arabic alphabet, representing a pharyngeal spirant consonant. […]
1. Gunnery. high angle. 2. in this year. abbreviation 1. hoc anno Latin hoc anno (this year)
- Ha2 virus
HA2 virus (āch’ā-tōō’) n. Variant of hemadsorption virus type 2.