| 摘要 |
A method of handling call transferring for a communication device during a SRVCC handover procedure is disclosed. The method comprise switching a plurality of IP Multimedia System (IMS) calls to a plurality of corresponding circuit-switched (CS) calls according to reception of a handover command when a mobile device has the plurality of IMS calls; and setting a plurality of transaction identifier (TI) values for each of the plurality of corresponding CS calls according to the plurality of IMS calls. The plurality of IMS calls share a packet switched (PS) configuration. Alternatively, the mobile device and the network may set the TI values according to the commands which include TI values for each of the CS calls. Alternatively, the mobile device and the network may only switch the active IMS call to the CS call or not even initiate the SRVCC handover procedure when the mobile device has multiple IMS calls with the network. |
