| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent leakage of significant information by having a user recognize that his/her conversation is being interrupted by another. <P>SOLUTION: A dealing communication system includes multiple terminal devices and a line control device to perform an operation of exchanging the multiple terminal devices with station lines and private lines. When a first terminal device is interrupted by a second terminal device through the line control device while the first terminal device is connected and in communication with one of the lines, the first terminal device changes a display of a line button of the first terminal device. Also, the first terminal device establishes a confidential talk setting of the connected line in the line control device, and the line control device, in response to the confidential talk setting, controls the line button of the second terminal device to display a state that the first terminal device cannot be interrupted by the second terminal device. <P>COPYRIGHT: (C)2012,JPO&INPIT |
