Gateway control protocol: Support of the resource reservation protocol
|Publication Date:||1 March 2009|
[ITU-T H.248.55] provides a generic package (as base package) for pull mode support. Such a capability is, for instance, required for bearer/media path-coupled QoS control protocols, like the resource reservation protocol (RSVP) according to [IETF RFC 2205]
This extension package describes the RSVP-specific
procedures and enables the ITU-T H.248 entities to support an RSVP
mechanism, which includes the initiation/terminati
[IETF RFC 2205] defines several RSVP message types. In addition to the two fundamental types: (Path and Resv), there are also teardown messages (PathTear and ResvTear), error messages (PathErr and ResvErr) and a confirm message (ResvConf). This Recommendation introduces a generic method for the MGC and the MG to deal with these above messages to support RSVP.
The ITU-T H.248 media gateway acts as an RSVP-aware policy enforcement point (PEP) when processing RSVP messages. The ITU-T H.248 MGC acts as an RSVP-aware policy decision point (PDP), it is the MGC that determines when to send the RSVP messages. On reception of incoming RSVP messages, the MG reports the related events to the MGC for its resource policy decision.
As such, the packages in this Recommendation allow the support of the functionality outlined by the application/RSVP interface (clause 3.11.1 of [IETF RFC 2205]).