| 摘要 |
PURPOSE:To make a telephone call by directly putting in a coin (card) from a slave device by detecting a charge signal from an exchange by a host device, sending the signal out by a radio, receiving the signal from the host device by the slave device and collecting a charge. CONSTITUTION:When a line is connected between a host device 2 or a slave device 3 and an external telephone set, the host device 2 detects the charge signal from an exchange 1 and sends it out by the radio. Then, when a call originating source is the slave device 3, the said slave device 3 receives the signal from the host device 2 and the charge is collected based on this signal. When the host device 2 receives a confirm signal for the collection of the charge from the slave device 3 during the call, a loop between the said slave device 3 and the exchange 1 is continued. Thus, action is prevented from being restricted for moving to the host device 2 in each call and the telephone call can be directly made even from the slave device 3 side. Then, the other slave device 3 does not make the call through the host device 2 by the coin, which is put in to the host device 2 side, and the telephone call can be made by effectively utilizing the merit of a cordless state. |
