H.323 Gateway Overview
ITU-T Recommendation H.323 pertains to the H.323 packet-based multimedia communications
systems. It describes an infrastructure of terminals, common control components,
services, and protocols that are used for multimedia (voice, video, and data)
communications.
An H.323 gateway is an optional type of endpoint that provides interoperability between
H.323 endpoints and endpoints located on a Switched Circuit Network (SCN), such as
the public switched telephone network (PSTN) or an enterprise voice network. Ideally, the
gateway is transparent to both the H.323 endpoint and the SCN-based endpoint.