Patent ID: 7706797

Claim:
A method comprising: directing receipt, by a second mobile services switching center, of a handover request for a call from a first mobile services switching center; handing over the call from the first mobile services switching center to a second mobile services switching center including handing over the call from cellular access to non-cellular access, wherein the first mobile services switching center does not know whether the call is handed over to the non-cellular access; and after the call is handed over, directing sending of a message, in response to the received handover request, by the second mobile services switching center indicating that the call was handed over to non-cellular access; wherein said non-cellular access comprises unlicensed mobile access, and both said cellular access as well as said non-cellular access are based on either one of global system for mobile communications or code division multiple access protocols; and wherein said message comprises a mobile application part interface message MAP_Prepare_Handover_Response, and wherein said message comprises a parameter indicating handover of the call to non-cellular access.