| 摘要 |
PURPOSE:To allow an analog line side to utilize an exquisite service of a digital line side by providing an interface device between a private branch of exchange for analog line and a subscriber digital line. CONSTITUTION:The interface device 10 is provided between a digital side LS station 20 and an analog line private branch of exchange (PBX). The interface device 10 consists of a subscriber didital line interface section 11, a control signal sound signal separation multiplex section 12 connected to the interface section and an analog line interface section 13. The separating multiplex section 12 separates the control signal on the multiplexed digital line and the voice signal corresponding to each analog line and multiplexes each control signal and voice signal from the analog line interface section 13. |
