| 摘要 |
PURPOSE:To connect an incoming call to a radio telephone set to a voice mail device automatically and to allow the voice mail equipment to execute as proxy for the reception of the call when the radio telephone set is present on the outside of a communication zero of a base station in a telephone exchange system in which the base station provided with the voice mail equipment and having a prescribed communication area houses radio telephone sets. CONSTITUTION:A central processing and controlling unit 30 checks whether or not private branch radio telephone sets 200a, 200b... are respectively present on the radio zones A, B of radio base stations 16, 18 for a prescribed period through radio control circuits 20, 22 and registers the result of the check to a main storage device 32. When the private branch radio telephone sets 200a, 200b... are present on the outside of the communication area of the base stations 16, 18, an incoming call to the private branch radio telephone sets 200a, 200b... is connected to the voice mail equipment 26, in which the voice message is registered. Then when the relevant telephone sets 200a, 200b... enter any radio zone, the arrival of the message is notified to the private branch radio telephone sets 200a, 200b... and the stored voice message is transferred to the replied relevant telephone sets 200a, 200b.... |
