| 摘要 |
PURPOSE:To attain effective operation of an incoming rejecting function in a PBX extension by blocking the setting of incoming rejecting function to an extension number when the extension number to which the incoming rejecting function is desired to be set is registered to a memory as a specific extension number. CONSTITUTION:A memory 2 of the electronic PBX is provided with a memory M1 registering the extension number to which the incoming rejecting function DND is set, a memory M2-1 registering a night transfer destination extension number NDN and a memory M2-2 registering an overflow destination extension number ODN. In setting the NDN or the ODN to terminal devices ATTB1-Bm, a central controller 1 references the storage content of the memory M1 and when the extension number to be set to the memory M1 is registered, the extension number of the M1 is deleted to release the DND. In setting the DND to extension telephone sets P1-Pn, the content of the memories M2-1, M2-2 is referenced by the controller 1, and when the extension number to set the DND is registered in the M2-1 and M2-2, the setting of the DND is blocked to prevent the abolishment of connection of an incoming line. |
