A location services prototype, based on IP Multimedia Subsystem (IMS) and Location in Session Initiation Protocol (SIP) / IP core (LOCSIP)

This paper describes a location-based services prototype that has been developed based on IMS and LOCSIP. The paper provides a brief overview of the prototype's capabilities, and illustrates how it has been used for rapid development of extended network services supporting first-responders in an emergency. Interoperability testing is discussed, and a set of lessons learned are presented.