Patent ID: 8260250

Claim:
A method in a multimedia service network of providing location information to an emergency center in a circuit-switched network for a mobile radio terminal connected to a packet-switched mobile access network, comprising the following steps: receiving a packet-switched emergency request from the mobile radio terminal containing a calling number, sending a location query for said calling number to a mobile radio terminal positioning center in a mobile radio access network when more detailed location information is needed, receiving a location indication for the mobile radio terminal in response to the location query, translating the packet-switched emergency request into a circuit-switched control message for said emergency request, and sending the translated circuit-switched control message including the location indication for the mobile radio terminal to the emergency center according to prevailing standards for initiating a circuit-switched emergency call, wherein the method is executed in a media gateway control function node, coupled to the mobile radio terminal positioning center, a packet-switched core network node coupled to the mobile radio access network, and the emergency center, that translates packet-switched signalling messages into circuit-switched signalling messages to emulate the behavior of a circuit-switched network towards the emergency center, wherein the multimedia service network is an IP Multimedia Subsystem (IMS) network using Session Initiation Protocol (SIP) signalling, and wherein the emergency request is an SIP INVITE message.