Patent ID: 8594015

Claim:
A system for identifying emergency communication services in a wireless network implementing an IP Multimedia Subsystem (IMS) architecture, the system comprising: a first communication component configured to: receive a session initiation protocol (SIP) message from a calling device, wherein the SIP message includes a request to initiate an emergency communication session and a device identifier; and send an emergency response center information request based on the received SIP message, the information request containing the device identifier; and a second communication component configured to: receive the emergency response center information request; evaluate capabilities of the calling device to determine one or more location techniques that are supported by the calling device; initiate a location determination of the calling device using one of the determined one or more location techniques that are supported by the calling device based on the device identifier in the received information request; receive a location of the calling device; determine a destination emergency response center for providing service to the calling device, the destination emergency response center determined by identifying an emergency response center that has a geographical coverage area which encompasses the location of the calling device; and transmit the destination emergency response center to the first communication component; wherein the first communication component is further configured to: modify the received SIP message to generate a modified SIP message containing routing information to the destination emergency response center; and send the modified SIP message to the destination emergency response center.