| 摘要 |
PURPOSE:To improve the automatic exchange service, by making a telephone usable the same abbreviated dialing independently of the presence of catching of a main trunk, in a automatic private branch exchange system for telephone sets having abbreviated dialing function. CONSTITUTION:When the user simply depresses ''#0'', a common control circuit 3 connects a main trunk 5 to the telephone set via a channel switch 4, and after pre-pausing, the number of opposing party, e.g., ''2224545'' is transmitted from a sender 6, sender link 7, and main trunk 5, and the contact of the trunk 5 is switched for restoration to the side where the voice channel from the telephone set is established. When the user depresses ''0#0'', the 1st ''0'' connects the trunk 5, and a circuit 3 transmits ''2224545'' with a trunk line trans-access code and a pre-pause code via the sender 6, link 7 and trunk 5 and the contact is switched to the restoration side. |
