Facsimile signalling method

摘要

A method for use in a facsimile system wherein a calling party unit has the capability of either transmitting a message to a called party unit or alternatively of directing an unattended called party unit to transmit a message to the calling party. The method allows the calling party to direct the called party unit to transmit rather than to receive. A communication link is first established between the calling party and the called party. Next, at least one of the plurality of the incoming information signals directed from the called party are detected by the calling party. In response, the calling party dispatches an outgoing master/slave indicator in the interval between incoming identification signals. In one embodiment an outgoing equipment identification signal is also dispatched in the intervals between the incoming identification signals and the steps of dispatching the master/slave indicator signal and dispatching the outgoing identification signals are repeated until a command signal is received.