Patent ID: 7688956

Claim:
A method of validating a facsimile communication between a sending facsimile device and a receiving facsimile device having at least a voice-capable mode and a facsimile capable mode, the method comprising: initiating a connection between the sending facsimile device and the receiving facsimile device using one of the sending facsimile device and the receiving facsimile device; establishing the connection between the sending facsimile device and the receiving facsimile device, the connection being utilized for at least one of facsimile communication, voice communication, and a combination of facsimile communication and voice communication; executing a line monitoring mode using the receiving facsimile device after the connection is established; detecting at the receiving facsimile device at least one facsimile calling tone after a first facsimile calling tone is detected while in the line monitoring mode; and switching the receiving facsimile device from the voice-capable mode to the facsimile mode once the at least one facsimile calling tone is detected, wherein detecting the at least one facsimile calling tone occurs at least one of during, after, and a combination of during and after voice communication, wherein the detecting of the at least one facsimile calling tone occurs from the establishment of the connection substantially during and after the voice communication.