PURPOSE: To realize a function to be transferred to plural transfer destinations in the set order by setting plural absent transfer destinations in the transfer telephone set such as an automatic private branch exchange.

CONSTITUTION: A master set 130 is provided with a storage means 140 storing plural absent transfer destinations and one continuous transfer button 104 is provided to extension telephone sets 101, 110, 120 to transfer an incoming call by a control means 141 to plural transfer extension destinations stored in the storage means 140 of the master set 103 in the order of setting when an extension is absent to make a speech between the transfer destination extension and the transferred party and when a person to which the transferred party desires transfer is absent in the transfer destination, the call is transferred to a succeeding transfer destination by depressing the continuous transfer button 104 of the transfer destination extension. Thus, since plural transfer destinations are set, it is not required to return to its own telephone set and to set the transfer destination again.