| 摘要 |
A communication apparatus for carrying out a communication operation in accordance with a remote command from another communication apparatus sharing one line with the another communication apparatus comprises a communication unit, line switching unit for selectively connecting the line to the another communication apparatus or the communication unit a power supply for supplying a power to the another communication apparatus to form a current loop with the another communication apparatus, a detector for detecting a status of formation of the current loop of the another communication apparatus, and a control unit for carrying out the communication operation in accordance with the detection signal of the detector.
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