| 摘要 |
PURPOSE:To simplify the subtraction processing of charging calls relating to an outgoing test call, by adding outgoing test call discriminating information to charging information of a detailed charging device according to the result of collation, in a cross bar exchanger provided with the detailed charging device. CONSTITUTION:When calls are incoming from test devices 5 and 6 to a subscriber to be tested, an incoming subscriber information storage device 1 storing the information of the subscriber to be tested is provided, and when an outgoing test is made, the outgoing subscriber information relating to the subscriber to be tested with a marker CM controlling the connection of the outgoing test and the information stored in the device 1 are collated, the outgoing test call is discriminated and the outgoing test call is recorded to a detailed charging device 2. Thus, the outgoing test call can be picked up from the detailed charging information and the subtraction processing of charging calls relating to the outgoing test calls can be made easy. |
