Patent ID: 9301129
Filing Date: 2016-03-29
CPC Classification: H04L,H04W

Claim Text:
1. A terminal capable of providing a circuit switched (CS) service, a session initiation protocol (SIP)-based service, or a CSI service which is a combination of the CS service and an Internet Protocol (IP) multimedia subsystem (IMS), the terminal comprising: a controller configured to: wherein if the received terminal capability version of the at least one target terminal is the same as the previously stored terminal capability version of the at least one target terminal, then the controller proceeds with a CS or IMS process, wherein the terminal capability version identifies a version of capabilities of the at least one target terminal, wherein the terminal capability version is updated when the terminal capability information is changed, wherein the terminal capability information includes at least one of: wherein the terminal capability version of the at least one target terminal has a value in a UCV-XX (UE capability version-XX) form where XX is a 2-digit hexadecimal number.