Техническая диагностика современных цифровых сетей связи. Основные принципы и технические средства измерений параметров передачи для сетей PDH, SDH, IP, Ethernet и ATM

480 Pages · 2012 · 10.33 MB · Russian
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“ Happiness doesn't result from what we get, but from what we give. ” ― Ben Carson
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