| 摘要 |
Communication networks (100) and methods are disclosed that provide call delivery to a dual mode wireless device (120) served by a wireless data network (104), such as a WiFi/IMS network, and a wireless voice network (105), such as a cellular network. A call control function (114) in the wireless data network (104) is adapted to receive a call to the dual mode wireless device (120). The call control function (114) transmits a ping message to the dual mode wireless device (120) over the wireless data network (104) to determine if the device is available over the wireless data network for the call. If the call control function (114) receives a response to the ping message from the device, then the call control function attempts to set up the call over the wireless data network (104). If the call control function (114) does not receive a response to the ping message, then the call control function may attempt to set up the call over the wireless voice network (105).
|
