| 摘要 |
PURPOSE:To simplify the automatic test program of an electronic exchange by comparing pattern data as the result of test with pattern data in plural normal pattern data and receiving externally the designation of the normal pattern data to be compared. CONSTITUTION:When a subscriber automatic test command is entered from a typewriter, the electronic exchange connects a subscriber line of a designated subscriber 1 to a subscriber automatic test device 8. The electronic exchange starts the device 8 and transmits test result discrimination pattern data command information by means of an instruction ORDA. A microprocessor muPC 3 of the device 8 receives the instruction ORDA via an I/O port 7 and a measuring circuit 2 conducts the line test of the subscriber 1 according to the program of an ROM 4. The muPC compares the measured value with a predetermined test criterion, forms pattern data of logical 1 when the measured value is larger than the criterion and of logical 1 when smaller, compares one of plural normal pattern data received with the pattern data of the test result to discriminate the propriety and transmits the result to the I/O port 6. The electronic exchange scans it and receives the information. |
