STATION-SIDE DEVICE

摘要

Provided are: an AGC circuit (116) that performs gain adjustments with respect to data received from subscriber-side devices (2); a gain maintenance unit (117) that maintains gain levels used in the gain adjustments by the AGC circuit (116); a gain circuit (118) that performs gain adjustments with respect to data received from the subscriber-side devices (2) by using the gain levels maintained by the gain maintenance unit (117); and selectors (112, 113) that select, as a transmission path for data received from the subscriber-side devices (2), a transmission path that passes through the AGC circuit (116) or a transmission path that passes through the gain circuit (118).