| 摘要 |
PURPOSE:To make it possible to transmit and receive test information easily independently of the line type between stations, by using the all confirmation type signal of the sound frequency band to transmit and receive test information between the test machine of the master station and the terminal test machine of the remote station through the channel. CONSTITUTION:When test machine CTE-M' for remote is started by subscriber's line test unit LTE, the CPU of the master station performs outgoing connection. In the remote station side, when incoming trunk ICT is started, incoming connection is performed to connect ICT to the subscriber's terminal where terminal test machine CTE-S' is stored. When CTE-S' responds, the path is closed between CTE-M' and CTE-S'. This path causes sound to pass through independently of the line type between the master station and the remote station, so that the all confirmation type signal of the sound frequency band can be used to transmit and receive information. Further, circuits of the outgoing sender and the incoming sender for all confirmation type signal can be used for the signal receiving part and the expanding circuit of CTE-M' and CTE-S'. |
