PURPOSE: To avoid a delay of a response time to an operator of a remote monitor caused by a fact that time is required for a processing of information transmitted from plural sets of automatic cash transaction machines to the remote monitor, and an increase of traffic on a transmission line.

CONSTITUTION: In the case information informed from an automatic cash transaction machine 1 has no relation to a display of a remote monitor 3, a transmission end instruction is transmitted by the monitor 3 without interposing an operator to the automatic cash transaction machine 1 which executes the transmission, and by finishing the transmission of the information which is not used, an unnecessary reception processing is suspended, generation of such a state as a response time is delayed to the operator is prevented, and also, an increase of traffic on a transmission line 2 can be prevented.