![]() Gatekeeper Discovery-An endpoint finds its gatekeeper Protocols Q.931 (with port number 1720) and H.245. The dynamic links for data, video, and audio streams, following the That are used for call signaling and call control for VoIP. H.323 consists of a suite of protocols (such as H.225.0 and H.245) Protocol defined by the International Telecommunication Union (ITU-T). The H.323 standard is a legacy voice-over-IP (VoIP)
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