Definitions for "H.320"
The ITU-T umbrella standard defining multimedia videoconferencing on a WAN (typically ISDN)
Stream-based video conferencing standard recommended by ITU. H.320 calls require a transport media that supports constant bit rates. H.320 is an umbrella standard and includes H.221, H.230, H.242, H.261, H.281, G.711, G.722, G.728 recommendations.
Video teleconferencing standard that combination of H.261 video compression and various suitable audio compression standards (G.711, G.722, etc.). Generally refers to videoconferencing data transmission via ISDN networks.