| 摘要 |
<p>PROBLEM TO BE SOLVED: To enable communication with an opposite party of an incoming call according to an operation at a radio telephone terminal, if an answer to the incoming is made first by an extension telephone terminal having coordination relationship with the radio telephone terminal.SOLUTION: In coordination control in which an incoming call is notified to both an extension telephone 20 having a given individual telephone number and a radio telephone terminal 30 at incoming from an opposite telephone 40 to the individual telephone number, when the extension telephone terminal 20 answers the incoming call first, a coordination control unit 14A continues the incoming to the radio telephone terminal 30. When the radio telephone terminal 30 answers the incoming call after the first answer by the extension telephone terminal 20, a communication control unit 14B connects communication between the radio telephone terminal 30 and the opposite telephone terminal 40.</p> |
