Disclosed is a facsimile apparatus that has a modulating/demodulating device that is operable at a low voltage. The facsimile apparatus of the present invention comprises, in its receiving system, loss means for reducing a level of a received signal; control means for instructing, for the loss means, a reduction value for the level of the received signal; incoming level detection means for storing a voltage value that corresponds to a predetermined level for each transfer mode, and for detecting an incoming level during initial identification procedures; user equalizing means, and comprises, in its transmitting system, gain/loss means, for altering a level of a signal transmitted by a modulating/demodulating device; control means for instructing, for the gain/loss means, a value for alteration of the level of the signal; loss means for reducing the level of the signal; and user equalizing means.