PURPOSE: To avoid the silence state by sending voice information read from a storage means able to be read at a high speed in parallel with the discrimination of communication kinds by a communication destination discrimination means to a line after the line connection.

CONSTITUTION: An automatic/manual detection section 241 is started at the line connection to detect a FAX procedure start signal CNG from a communication opposite party thereby discriminating a medium of the communication opposite party. Moreover, a service start guidance is sent in parallel with the discrimination. A voice data stored in a RAM 221 in advance is read and sent via a voice coding/decoding section 261. Thus, when the communication opposite party is a telephone set 531, the operator of the telephone set 531 listens to a service start guidance immediately after the line connection.