| 摘要 |
A method and a terminal are described for 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) service. The terminal may receive a terminal capability version of at least one target terminal, and compare the received terminal capability version with a previously stored terminal capability version of the at least one target terminal. The terminal may send a message for requesting for terminal capability information of the at least one target terminal, if the received terminal capability version of the at least one target terminal is different from the previously stored terminal capability version of the at least one target terminal based on the comparison result. Otherwise, a CS or IMS process is implemented. |
| 主权项 |
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) service, the terminal comprising:
a controller to receive a terminal capability version of at least one target terminal, to compare the received terminal capability version with a previously stored terminal capability version of the at least one target terminal, and to request for terminal capability information of the at least one target terminal if the received terminal capability version of the at least one target terminal is different from the previously stored terminal capability version of the at least one target terminal based on the comparison result, 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, and wherein the terminal capability information includes at least one of: supported media format parameters, a Mobile Station International Subscriber Directory Number (MSISDN), a preferred Session Initiation Protocol (SIP) Uniform Resource Identifier (URI), or a supported Multimedia Message service (MMS) version. |
