SIP user release

摘要

A system that releases a Session Initiation Protocol (“SIP”) user from a serving function on an Internet Protocol Multimedia Subsystem (“IMS”) network receives a REGISTER refresh from a registered user equipment (“UE”). In response to the REGISTER refresh, the system sends a server assignment request to a home subscriber server (“HSS”) that clears the name of the Serving Call Session Control Function (“S-CSCF”) assigned for the registered user. The system then sends a gateway timeout or server timeout that would trigger the UE to send an initial REGISTER request.

主权项

1. A non-transitory computer-readable medium having instructions stored thereon that, when executed by a processor, cause the processor to release a Session Initiation Protocol (SIP) user from a first serving function on an Internet Protocol Multimedia Subsystem (IMS) network, the releasing comprising:
in response to a REGISTER request, registering a user equipment (UE) with the first serving function; determining that the UE is to be released from the first serving function; in response to the determining, waiting to receive a REGISTER refresh from the registered UE; in response to the REGISTER refresh, sending a server assignment request to a home subscriber server (HSS); and sending a gateway timeout to the UE.