| 摘要 |
PURPOSE:To decrease the number of subscriber line test devices, by incorporating various subscriber line test devices in a telephone exchange. CONSTITUTION:In dialing a telephone number of subscriber test at the subscriber line test from a subscriber telephone set 1, a relay contact 2 is closed, numeric information from the subscriber telephone set 1 is received at a subscriber line test master device 7 via a subscriber test slave device 9, the test is executed via the test slave device 9 and the result is transferred to the telephone set 1. The relay contact 2 is closed with a program of a central controller 10 at the test of automatic subscriber line, the test is performed by the control of program, the result is transferred to the central controller 10. At the test from a subscriber test board 8, the subscriber line test slave device 9 performs the test with the designation of the test items and the result is transferred to the test board 8. |
