To give polling destination indicating information on a public network without receiving the restriction of an information quantity and information contents by using the binary file of a prescribed form including polling final destination indicating information and polling repeating destination indicating information at need.

A facsimile equipment 4a on a calling side gives polling destination indicating information to a network facsimile equipment 2 on a call- incoming side by including polling destination indicating information in binary file transfer(BFT) data to transmit and transmitting it. The equipment 2 on the call-incoming side reads the mail address of a polling final destination buried in received BFT data and transmits the electronic mail of a polling transmission request toward the mail address of a server equipment 7. By transmitting and receiving as BFT data basically without a restriction concerning the number of octets like this, many pieces of information can be sent.