Open Settlement Protocol module for for SER

 This module enables SER to support secure, multi-lateral peering
 using the OSP standard. Using this module, SER can send peering
 authorization requests to peering servers, validate signed peering
 authorization tokens in SIP INVITE messages, and report usage
 information to a peering server.
 .
 SER, the SIP Express Router, is a very fast and flexible server for
 SIP (the Session Initiation Protocol).