Patent ID: 8934105
Filing Date: 2015-01-13
Classification: H04N

Abstract:
1. A control method of an image forming apparatus which transmits and receives facsimiles through a first line and a second line, the control method of the image forming apparatus comprising: detecting an error in a first facsimile unit, which is matched to the first line having a first telephone number through a switching unit, and a second facsimile unit, which is matched to the second line having a different second telephone number through the switching unit, with respect to a facsimile transmitting and receiving operation; and switching the first line and the first telephone number with the switching unit to be matched to the second facsimile unit, instead of the second telephone number, if an error is detected in the first facsimile unit, wherein the first line has a first facsimile operation of transmitting and receiving of facsimiles with respect to the second line.