Which ITU standard provides videoconferencing interoperability over T1 or ISDN connections?

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Multiple Choice

Which ITU standard provides videoconferencing interoperability over T1 or ISDN connections?

Interoperability over circuit-switched networks such as ISDN or T1 requires a standard that defines how devices from different vendors communicate end-to-end on those connections. H.320 is the ITU-T suite designed specifically for ISDN-based videoconferencing, covering signaling, audio and video codecs, and multipoint control so equipment from various manufacturers can work together over ISDN/T1 networks. In contrast, H.323 targets packet-switched IP networks, and H.261 is just a video codec used within these standards rather than the overarching interop framework. HL-7 deals with healthcare data exchange, not videoconferencing protocols. So, H.320 is the standard that provides videoconferencing interoperability over T1 or ISDN connections.

Interoperability over circuit-switched networks such as ISDN or T1 requires a standard that defines how devices from different vendors communicate end-to-end on those connections. H.320 is the ITU-T suite designed specifically for ISDN-based videoconferencing, covering signaling, audio and video codecs, and multipoint control so equipment from various manufacturers can work together over ISDN/T1 networks. In contrast, H.323 targets packet-switched IP networks, and H.261 is just a video codec used within these standards rather than the overarching interop framework. HL-7 deals with healthcare data exchange, not videoconferencing protocols. So, H.320 is the standard that provides videoconferencing interoperability over T1 or ISDN connections.

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