ITU-T Recommendations

Recommendation ITU-T Q.3303.2 specifies the resource control protocol No. 3 (rcp3) ITU-T 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 network address and port translation (NAPT) control and network address translation (NAT) traversal at the PE-PEs as needed. It satisfies the requirements for information flows across the Rw reference point as specified in clause 8.2 of Recommendation ITU-T Y.2111. It is also used to control the PE-PE in transport devices, including quality of service (QoS) resource control (e.g., packet marking, filtering and policing) and gate control.
This version of the Recommendation improves the published version 1 in 2007 and adds additional features to satisfy the full requirements as defined in Recommendation ITU-T Y.2111, based on the developments and progresses of both ITU-T Y.2111 and ITU-T H.248 protocols. New functional packages as well as their procedures are introduced in this version such as "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.