| 摘要 |
PURPOSE:To elevate the working efficiency of an internal link, by using a multichannel required for a multiple traffic in common through making the basic channel a base, in a digital time division exchange. CONSTITUTION:A digital time division switch TDSW wthin the exchange is provided with a time switch of one or more stages, and optional channels of each digital circuit constitute a path to each other as long as the internal link is free. Also, in the switch TDWS, 1 frame is further made multiplex. A busy idle check of the internal link, and a channel control are generally executed through a channel controlling common signal line BUS by a central control device CC. Moreover, a digital circuit control device DTIC is also executed through the BUS by the device CC in the same way. Accordingly, as long as optional (n) pieces of channels are free in the internal link, the internal link is formed and is connected to an output digital circuit. |
