| 摘要 |
PURPOSE:To improve allowance to cope with the change of communication mode, the addition of new functions, etc., by providing a connection controller between a terminal connection unit, where a subscriber's line is connected, and a terminal equipment. CONSTITUTION:Subscriber's line is connected to terminal connection unit 3, and terminal connection controller 1 is provided between unit 3 and terminal equipment 4, and the hardware which requires modification for the change and the addition of communication modes and functions is concentratedly arranged in controller 1. |
