| 摘要 |
PURPOSE:To recall a caller automatically immediately after completion of call of called extension and enable talking by additionally dialing specified items when a caller of main wire desires recalling. CONSTITUTION:When an extension 2 is busy, a caller makes additional dialing of special number for automatic recalling and subscriber number of the caller and hooks on. Thereby, a central controlling unit 6 stores additional dial information in an automatic recalling storing unit 8. When the extension 2 hooks on, the unit 6 calls the extension 2, catches a main wire trunk 3 and a sender 5, reads out additional dial information from the unit 8 and sends out from the sender 5. The extension 2 is connected to the caller through a switch network 1 and the trunk 3, and the caller is recalled automatically. |
