PURPOSE: To change a transmitting destination from an external part by providing a storing means to store the transmitting data and a storing means to store the transmitting control information including the transmitting destination information of the transmitting data, decoding a telephone number signal received through a telephone line with a decoding means and changing the transmitting control information.

CONSTITUTION: The title device provides a storing means to store transmitting data to a communication main body 4, a storing means 10 to store the transmitting control information including the transmitting destination information of transmitting data, a connecting means to connect with a telephone line, a decoding means to decode a telephone number signal received through the telephone line and a changing means to change the transmitting control information stored in the storing means based on the decoded information. After the line from an external telephone set is connected to a main device, the corresponding telephone number signal is transmitted. Thus, the transmitting destination can be changed from the external part.