| 摘要 |
<p>Disclosed is a facsimile apparatus that combines copying and transmission. An external telephone (1) is connected to the facsimile apparatus (3,4, 5, 6, 11, 12, 13, 14) that is remotely controlled by a remote signal including at least one DTMF signal from the external telephone (1). And there is provided means (4) for comparing the tone duration of the tone-pair signal having DTMF frequencies sent by the external telephone (1) with a predetermined detection time, and deciding whether or not said tone-pair signal is a valid DTMF signal used for remote signals based on the compared result. And there is further provided means (4) for estimating the tone duration of DTMF signals that is specific to the external telephone, and setting the optimum detection time. <IMAGE></p> |
