SL200D Inteligent Subscriber Line Tester
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From 1998 SL200D was used in the system of China Telecom and its enhanced model SL200E was used in the military communication system in China. SL200D was exported to Nepal and some other countries in Southeast Asia.
The design of SL200D is based on the modern electronic measuring technology, digital signal processing technology, microprocessor control technology, digitized voice technology, etc. SL200D integrates the most functions of exchange subscriber line testing unit (TU) and traditional manual subscriber line testing board.
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