The on-line test equipment of the electronic exchanger (APPARATUS FOR ON LINE TEST IN SWITCH)

摘要

The present invention relates to an on-line test apparatus for an electronic exchanger for diagnosing the status of a switch network in a service-in-service system, which comprises a controller for inputting information on a start channel, a test start, a clock and a synchronization signal (CP4, FS) Random data generator circuit (1) for generating pseudo-random data in a corresponding channel and applying the generated pseudo-random data to a time switch, a memory (3), and pseudo-random data generating means Random data generator circuit (1) according to a predetermined selection signal and data of a time switch via a sub-highway, and when the received data is pseudo-random data A pseudo-random data receiving circuit (4) for reading and outputting data stored in the memory (3) A comparison circuit 5 for comparing the received data with the data received by the pseudo-random data receiving circuit 4 and outputting an error signal, and an error counting circuit 6 for counting and outputting the error signal of the comparison circuit 5 Respectively.;Therefore, the present invention has an effect that it is possible to know whether the switch networks are switching correctly and whether or not the switch network is normal in the system performing the service.