| 摘要 |
A call receiving service method of an SIP video terminal is provided to enable the receipt of an SIP video call by implicitly performing location registration for a called video terminal. According to a call connection request with a called video terminal(500) from a calling video terminal(100), an MSS(Multimedia Session Control System)(200) requests location information of the called video terminal from an IMSR(IP Multimedia Subscriber Register)(300). The IMSR notifies the MSS that the location of the called video terminal is not resitered, and grasps the current location of the called video terminal by interworking with a home location register(HLR)(400). The home location register requests the location registration from the called video terminal and then registers the location again in the MSS. |
