Abstract: In a facsimile communication system, a user's terminal facsimile apparatus stores a plurality of character strings each composed of instruction words and data to be sent to a host apparatus for identifying one of communication services offered from the host apparatus. Accordingly, when one of the stored character strings is selected and executed, the corresponding communication service is offered from the host apparatus to the user's terminal facsimile apparatus. The character string may be produced by actually communicating with the host apparatus so that a transmission timing of the data in the character string can be precisely matched with what is required by the host apparatus.