| 摘要 |
PURPOSE:To attain light reception and conversion by surely separating a reflected optical signal from a regular optical signal when outgoing incoming call control is simultaneously implemented in the case of outgoing incoming call control of the optical communication system. CONSTITUTION:This system is provided with oscillators 2,3 controlling a light emission interval of electrooptic converters 4,5 different between a station equipment and a subscriber equipment and with received light strength detectors 6,7 detecting a peak of the optical signal received at a time interval other than the light emitting time decided by the oscillators 2,3 to detect the light receiving level. Thus, the effect of preventing a dead lock of the outgoing incoming call control procedure is obtained. |
