Modem control apparatus, control method thereof, and storage medium

摘要

This invention provides a mechanism which can attain at least one of an accurate measurement of a T0 timer and appropriate control of a CNG output timing in a FAX communication using AT commands. To accomplish this, in a modem control apparatus for controlling a modem using AT commands, the modem is set in a voice mode, an AT command including a dial number is sent to the modem set in the voice mode, the modem is set in a facsimile mode after completion of the dialing in the modem, and an AT command including no dial number is sent to the modem set in the facsimile mode so as to control the modem to begin to output a calling tone.

主权项

1. A modem control apparatus for controlling a modem using AT commands, comprising:
a first setting unit that sets the modem in a voice mode; a first sending unit that sends an AT command including a dial number to the modem set in the voice mode so as to control the modem to start dialing by a captured line; a receiving unit that receives a notification indicating completion of the dialing from the modem; a second setting unit that sets the modem in a facsimile mode in accordance with the notification received by said receiving unit; a timer unit that starts measurement of a time in accordance with the notification received by the receiving unit; a second sending unit that sends an AT command including no dial number to the modem set in the facsimile mode so as to control the modem to begin to output a calling signal; an instruction unit that instructs the modem to release the captured line in a case where a predetermined response is not returned from an apparatus on a communication partner side and the time measured by said timer unit exceeds a predetermined time; and a communication unit that performs a fax communication in a case where the predetermined response is returned.