Resource control protocol No. 3 – Protocol at the interface between a Policy Decision Physical Entity (PD-PE) and a Policy Enforcement Physical Entity (PE-PE): COPS alternative version 2 (Study Group 11)
Recommendation ITU-T Q.3301.1 specifies the resource control protocol No.3 (rcp3) COPS profile 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 function block. This protocol profile allows the final admission policy decisions to be installed (i.e., 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 port translation (NAPT) control and network address translation (NAT) traversal at PE-PEs as needed.It satisfies the requirements for information flows across the Rw reference point as specified in clause 9.2 of ITU-T Y.2111 and in Supplement 51 to the ITU-T Q-series.