Recommendation ITU-T X.609.1 defines a peer activity management protocol (PAMP) that runs on the interface between peer activity management server (PAMS) and peer and the interface between PAMS and overlay management server (OMS). PAMP is used to deliver peer activity status information with the goal of optimization of overlay network. Peer activity status information includes static profile information and dynamic status information of peer. This Recommendation provides the requirements, protocol operations, and message formats used in each operation for PAMP