| 摘要 |
The proposed system for checking circuit techniques, adjusting software, and automatically testing the parameters of a digital automatic exchange contains a power-supply unit, a program control unit, a local area network, a switching unit, and additionally, a signal processor with a video monitor, a unit for inputting control signals, recording unit, and interface, a signal concentrator, a unit for direct connections with subscribers, standard and special measuring facilities, and a unit fir adjusting software. The program control unit contains a personal computer with software, a video monitor, keyboard, and interface. The program control unit is connected to the local area network via the network interface. The signal inputs and outputs of all the units are connected to the corresponding outputs and inputs of the switching unit, and the control inputs are connected to the outputs of the program control unit via the local area network interface. The measuring facilities are connected to the local are network. The proposed system is connected, via the office digital automatic exchange, to the public exchange for a possibility to communicate with remote subscriber terminals that use different signalling techniques.
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