gnugk

GNU Gatekeeper is an open-source project that implements an H.323 gatekeeper. A gatekeeper provides call control services to the H.323 endpoints. It is an integral part of most useful internet telephony installations that are based on the H.323 standard. According to Recommendation H.323, a gatekeeper shall provide the following services: Address Translation Admissions Control Bandwidth Control Zone Management Call Control Signaling Call Authorization Bandwidth Management Call Management The GNU Gatekeeper implements most of these functions based on the OpenH323 protocol stack.