| 摘要 |
PURPOSE:To use plural codeless telephone set as one system by calling the all slave sets of the plural codeless telephone sets, such as a system or a group, with the transmission of an original ID when the slave set does not respond for a certain time. CONSTITUTION:When an incoming call is generated to, for example, a master set 2 of a No.1 set from a transmitting side, the line of the master set 2 is connected only with a slave set 3 of the No.1 set, and a calling sound is transmitted to the slave set 3. Here, when the possessor of the telephone set of the No.1 set leaves his seat without having the slave set 3, he cannot answer at the slave set 3. Therefore, when the calling is not responded for the certain time, all the plural slave sets 3 of this group is called, and the set to first respond is given priority, and the channel of the slave set 3 is connected with the transmitting side. Thus, when one telephone set is called, any of the other telephone set can respond the calling without operating the called telephone set. |
