TRANSFERRING METHOD FOR INCOMING CALL BY USE OF TELEPHONE EXCHANGE SYSTEM

PURPOSE:To reduce the cost required for the transfer of an incoming call by a telephone exchange system. CONSTITUTION:When an incoming call is made to be received in a message transmitter 21 by the dial-in operation from an originating caller, the originating caller receives the guide message from the message transmitter 21. When the depression of a second dial number by a non-illustrated ten-key group in accordance with the guide message is performed from the caller, a central control part 16 refers to a conversion memory 15 based on the depression information by the depression information by performing the depression. As a result, the transfer to an extension is performed by performing the connection switch of a speech path switch 13. The connection switch is performed for the message transmitter 22 as necessary. The originating caller receives again the guide message from the message transmitter 22. The central control part 16 transfers the incoming call to the extension of a transfer destination in the same way. Thus, the extension lines are stored corresponding to the number of lines the a main device 1 each store.