| 摘要 |
PURPOSE:To enable an easy maintenance and to improve the reliability of a communication by a communication test with returning a line in fault to a test line when the fault is occurred and braketing the fault whether it is caused by a remote control communication equipment or by the line side including a slave station. CONSTITUTION:It is assumed that the fault is occurred at a control link when a control information is transmitted and received between a Central Control Unit 2 in a master station and a control unit in the slave station which is not shown at a figure. At such a time, a remote control terminal circuit 7 for a test line is made to operate by the Central Control Unit 2 through a data channel equipment 4 and a remote control signal line common part. At the next, an indication to return No.0 line to the test line is sent out to a returning time switch control circuit 12 via an SP bus control equipment 3. By the control of the Central Control Unit 2, the 0 line which is the line in fault and the test line which substitutes for the slave station are started up with a procedure used in an actual operation and data are transmitted and received and the control link within the remote control communication equipment of the 0 line which is the line in fault is tested. And the Central Control Unit 2 decides the test result and brakets the fault. |
