Location Conveyance for the Session Initiation Protocol
J. D. Polk, Brian Roy Rosen, John Peterson · 2011
This document defines an extension to the Session Initiation Protocol (SIP) to convey geographic location information from one SIP entity to another SIP entity. The SIP extension covers end-to-end conveyance as well as location-based routing, where SIP intermediaries make routing decisions based upon the location of the Location Target. [STANDARDS- TRACK]