| 摘要 |
PURPOSE:To cope surely with plural callers only carrying a single call bell identifying a caller and operating a specific display means corresponding to the identified caller. CONSTITUTION:When an optional caller sends a call signal, it is sent through a relay station or the like, a reception section 3a receives it to activate a discrimination section 3b. The discrimination section 3b identifies who is the caller based on an identification signal included in the received call signal and outputs a signal representing to light the individual display means (indicating lamp) corresponding to the caller and a signal representing to activate a buzzer to a drive section 3c, and the drive section 3c lights up the relevant indicating lamp and activates the buzzer. Thus, the carrier can recognize the presence of call by the buzzer sound and can specify the caller by confirming visually which indicating lamp is lighted. |
