| 摘要 |
PURPOSE:To identify easily that a connected device is a terminal device transferred during communication by providing a function a high resistance termination at transfer during communication to an incoming information connecting line of a subscriber's terminal equipment. CONSTITUTION:In transferring the subscriber's terminal equipment 7 during the communication state already, a couple of the incoming information connection lines are terminated by a high resistance resistor 9 by operating a changeover switch 8 at the inside of the subscriber's terminal equipment 7. Since other subscriber's terminal equipments plugged to a socket 4 are not terminated by the high resistance resistor 9 for a couple of the incoming information connecting lines because the communication is started newly during the transfer of the subscriber's terminal equipment 7, it is identified that the connection is not the reconnection of the subscriber's terminal equipment 7 transferred during communication, and when the subscriber's terminal equipment 7 transferred during communication is plugged to the socket 4, since a couple of the incoming information lines are terminated by the high resistance 9, a digital exchange 1 detects the termination by the said high resistance resistor 9. |
