This Recommendation specifies the resource control protocol no.3 (rcp3) H.248 profile used at the Rw interface, i.e. between the Policy Decision Physical Entity (PD-PE) and the Policy Enforcement Physical Entity (PE-PE) in the Resource and Admission Control Functional block.
This protocol profile allows the final admission policy decisions to be installed (either push or pull mode) to a PE-PE from a PD-PE, supports resource control for both fixed and mobile networks and supports the NAPT Control and NAT Traversal at PE-PEs as needed. It satisfies the requirements for information flows across the Rw reference point as specified in sub-clause 8.2/ITU-T Y.2111. It is also used to control the PE-PE in transport devices, including QoS resource control (e.g. packet marking, filtering and policing) and gate control.
The version 2 of this Recommendation is to improve the published version 1 in 2007 and to add additional features to satisfy the full requirements as defined in Y.2111, based on the developments and progresses of both Y.2111 and H.248 protocols. New functional packages as well as their procedures are introduced in version 2 like Hanging Termination Detection, Statistics Conditional Reporting, IP realm availability, and Pull mode. Meanwhile a number of changes are made to refine the profile definitions and the details.