| 摘要 |
PURPOSE:To eliminate spatial splitting link for the subscriber line test or to make the link to a very small scale by leading-in a subscriber line to an analog quantity measuring circuit, digitizing the result of measurement, feeding it to a display section via a digital path of a channel device, digitizing the signal by a subscriber circuit of a called party selecting signal from a subscriber's equipment, and connecting the signal to a signal measuring device via a digital bus of the channel device. CONSTITUTION:The analog quantity measurement of the subscriber line to be executed in a comparatively short time is executed by leading in the subscriber line in a analog quantity measuring circuit 14 via a relay 13, the result is transferred to a board 11 via a digital pulse 17, and on the other hand, the measurement of the called party selecting signal from the subscriber's equipment requiring a comparatively long time is conducted while being digitized by per channel CODECs 6, 6' and connected to a signal measuring circuit 14 of the board 11 via a digital path 16, and the result is displayed as it is on the board 11. Thus, since the holding time of the analog quantity measuring circuit 14 is made very short, no hindrance is caused to the service by only installing one measuring circuit 14 to plural subscriber lines. |
