| 摘要 |
PURPOSE:To avoid the relay distortion of monitor signal, by adding the subexchanger circuit network exchanging the monitor signal on exclusive use line in distortion-less state to the main exchanging circuit network. CONSTITUTION:General call such as monotor signal and dial pulse in scanned at the scanning circuit 26 and it is fetched to the central control unit 28. After that, the control circuit 29 delivers the said monitor signal at specified channel location via the lines 32a and 32b. The monitor signal relating to the exclusive line is written in the memory of the subexchanging circuit network 27 in corresponding with the sequential channel number. The communication information in corresponding to the main exchanging circuit network 22 is outputted at the signal insertion location of the corresponding channel on the relay line in the exchanging operation of the subexchanger circuit network 27 from the memory. Thus, the monitor signal relating to exclusive line can be relayed without distortion. |
