Ancillary data support in session initiation protocol (SIP) messaging

摘要

A SIP ancillary data server provides host to auxiliary data for an emergency SIP session (call) uniquely referred to in a transported SIP header. In a manner similar to how location is represented in an emergency call, a SIP header is extended. The extended SIP Header contains one of two possible types of content elements: either (a) a content pointer element to a SIP Message body part (a “cid:”, or content identifier); or (b) an (a.k.a, “info_URI” in this document).

主权项

1. A Session Initiation Protocol (SIP) proxy server for facilitating inclusion of auxiliary data in a SIP session, comprising:
a first communication path, from an initiator device, to receive an emergency SIP message including an extended header comprising current location information of said initiator device and a uniform resource identifier referencing an external source device providing auxiliary emergency information associated with said emergency SIP message; an auxiliary information module to obtain said auxiliary emergency information from a server addressed by said uniform resource identifier; and a second communication path to communicate said auxiliary emergency information associated with said emergency SIP message, to a recipient device.