Patent ID: 8094652

Claim:
A Packet Mobile Switching Center, PMSC, for providing a circuit switched telecommunication service to a mobile station utilizing a Long Term Evolution, LTE, packet switched access network, said packet mobile switching center comprising: a network controller for receiving control plane information tunneled through a packet switched network from the LTE access network, and for requesting resources from a Policy and Charging Rules Function, PCRF, in the packet switched network; a Mobile Switching Center Server, MSC-S, in communication with the network controller for setting up sessions between the mobile station and a circuit switched core network; a Circuit Switched Media Gateway, CS-MGW, in communication with the MSC-S for forwarding a media stream to and from the circuit switched core network; and an interworking unit, IWU, in communication with the network controller and the CS-MGW for receiving user plane information tunneled through the packet switched network from the LTE access network, and for repacking the user plane information from Real Time Protocol, RTP, to Nb framing for use by the CS-MGW.