| 摘要 |
PURPOSE:To enable the flexibility of direct line telephone subscriber and automation of incoming number processing after the setting of direct line telephone subscriber, by making the setting of the direct telephone line subscribers via a main switch. CONSTITUTION:The operator intervenes TRK on BD, and with the operation of the BD, the number corresponding to a general extension telephone subscriber to be set to a direct telephone subscriber is set and an exchanger is started. The started exchanger connects between the general subscribers EXTA and EXTB corresponding to the number and the TRK intervened with the BD via a general channel connecting MS. After the EXT and the TRK are connected, the direct line set information is transmitted to the TRK with the operation of the BD. When this information is received by the TRK, the not contact in the TRK is operated and a switch holding information is transmitted to the MS. Even if the BD is retired from the intervened TRK, the MS is not restored, the connection between the EXT and the TRK is kept, and the setting from the EXT to the direct telephone subscriber is finished. |
