| 摘要 |
PURPOSE:To eliminate the need for a charging area for an extension outside of charge objective, by setting extension telephone set information for charge and not to a storage section of a controller of a private automatic branch of exchanger in advance and comparing the information with the allocation information of trunk line outgoing call. CONSTITUTION:A storage section MEM is provided with memories SUB0- SUBm for charge objective and a memory DELSUB outside of the charge objective. When an extension telephone set EXT dials a specific number of trunk line outgoing call, a main controller CONT receives channel switch SW allocation position information for storage, and when the call is finished, the said position information is set to a register Areg, the information of memories SUB0-SUBm is set to a register Breg for comparison, and when they are coincident, the charge is registrated in a charging area. If discident, the information of the memory DELSUB is set to the register Breg for comparison, and when coincident, the information is neglected as outside the charge objective. When discident, the information is printed a failure message. Thus, the charging area outside the charge objective can be eliminated. |
