| 摘要 |
PURPOSE: A call processing method in VCC system is provided to enable a first MSC(Mobile Switching Center) to confirm O-CSI(Originating CAMEL Subscription information) of a subscriber by trying an originating call from VCC UE(User Equipment). CONSTITUTION: A first terminal of a VCC(1000) subscriber uses a CS(300) network and a second terminal and existing first call are established. The first terminal determines a domain change over. The first terminal uses IMS(100) as VCC AS(110) and transmits an invitation message including first terminal information and VCC AS information to CSCF. The first terminal attempts a second call for the domain change over. CSCF determines VCC AS information as PSI and 0transmits the second call to VCC AS. |
