| 摘要 |
PROBLEM TO BE SOLVED: To provide a call system in which a slave unit connected to a master unit is more freely selected. SOLUTION: In the call system including a master unit (2) connected to a public line and a slave unit 3 connected to the master unit via a wireless line, a CPU (27) of the master unit is provided with an authentication program (29B) for authenticating the slave unit 3 connected to the wireless line based on wireless LAN standard, a CPU 36 of the slave unit 3 is provided with a multicast program 38C for retrieving the master unit and other slave units 3,... connected to the wireless line to acquire identification information of the retrieved master unit and other slave units,... when connected to the wireless line and a call program 38I for connecting with other retrieved slave units 3,... based on DLNA standard to establish a call. COPYRIGHT: (C)2008,JPO&INPIT
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