Patent ID: 8891447

Claim:
A method for a mobile terminal located in a visited public land mobile network (VPLMN) to discover a generic access node controller (GANC) in a Circuit Switched Services over Long Term Evolution using Generic Access Network CSoLTEvGAN) architecture, the method comprising: establishing a transmission control protocol (TCP) connection with a first default GANC in a home public land mobile network (HPLMN); sending a register request, for a serving GANC to serve the mobile terminal, to the first default GANC; receiving from the first default GANC an address to a second default GANC located within the same VPLMN as the mobile terminal; and storing the address to the second default GANC and assigning said second default GANC as the GANC to which the mobile terminal will send future registration requests for a serving GANC to serve the mobile terminal while in the VPLMN as long as the mobile terminal is connected to or camped on the same VPLMN as the second default GANC.