| 摘要 |
<P>PROBLEM TO BE SOLVED: To enable a communication apparatus comprising a plural interface to perform detour call arrival while selecting any interface, and to cause a call to arrive at an interface under power feeding in response to the interface selection. <P>SOLUTION: There are provided a plurality of networks (cellular network 6, WLAN network 8) and a communication apparatus (communication terminal device 4) connected by radio to network devices (cellular exchange 10, SIP server 14) installed on the networks. The communication apparatus 4 comprises a plurality of interface parts (cellular interface part IF-1, WLAN interface part IF-2) corresponding to the networks. Connections of power supply to the interface parts are switched, and a part of the networks or all the networks are notified of detour destination information for causing call arrival from a network to make a detour to the interface part of a call arrival destination. Upon receipt of the detour destination information, the network device makes a detour, for the call arrival, to the interface part of the detour destination. <P>COPYRIGHT: (C)2008,JPO&INPIT |
