An Extension to the Session Initiation Protocol (SIP) for Endpoint Session View
NS-Technologies
This document defines a standard mechanism for capturing and providing important session information associated with the Session Initiation Protocol (SIP). Certain properties of a SIP protocol exchange are essential for further independent signalling interactions. In certain environments this information can be lost when traversing entities such as Back-to-Back User Agents (B2BUA). This document defines a new optional SIP header, Endpoint-View, for capturing appropriate information.