To enable facsimile equipment to easily cope with a special environment such as a time-division multiplex device.

When transmission is started for every destination, a CPU 7 reads transmission mode information corresponding to the destination of transmission set in a transmission mode storing part 22, sets a transmission mode according to the read transmission mode information and performs transmission processing. When an error is generated at the time of performing the transmission processing, a customer engineer designates and inputs the transmission mode according to the content of the error. A transmission mode setting part 23 changes the setting classification of the transmission mode information of a destination in which the error is generated set in the transmission mode storing part 22 and changes the setting of the transmission mode information according to the inputted transmission mode information.