| 摘要 |
PURPOSE:To call only the specified hand set in the system provided with plural hand sets by providing means for detecting slave set information from a master set and for outputting output tones in the case of information corresponding to the own slave set in the respective slave sets. CONSTITUTION:A telephone number is inputted by operating ten keys after the register key of a key circuit 11 in a master set 1 is operated, the register key is operated again, and the number of the desired slave set to be called is inputted corresponding to that telephone number. The inputted data are stored in a memory 10. A control circuit 12 of the master set 1 monitors an incoming call detection circuit 7 and detects incoming calls. When there is any incoming call, the control circuit 12 inputs the telephone number data of a caller through a caller information detection circuit 8 and when there are coincident data in the telephone number data group of the memory 10, the correspondent slave set number data are transmitted to the slave set together with incoming call data. When these incoming call data are detected, the control circuit of the slave set drives a bell and alarms call incoming when the slave set number data address the present hand set or contain the own slave set. |
