To allocate a transfer destination terminal according to caller information by notifying the transfer destination terminal that corresponds to telephone number information that an incoming call exists, when the caller information exists at incoming call time and also when the telephone number information that corresponds to the caller information exists in a telephone directory memory.

When there is an incoming call of a signal that includes calling number information from the opposite communication party, the calling number is stored in calling number storage memory 1 of an incoming call terminal, and a telephone number information retrieving means 7 retrieves if a telephone number in a 1st group 3 or in a 2nd group 4 in a telephone directory memory 2 of the incoming call terminal which matches with the calling number exists. When the calling number matches with a telephone number in the memory 2 in such cases, a transfer destination telephone number 5 which corresponds to the telephone number of the group 3 in which the telephone number has been included and previously set is extracted, and a dial sending means 9 automatically dials the transfer destination telephone number, in order to notify a transfer destination terminal 9 that an incoming call exists and to perform transfer control.