Modernization of the site zonal networks Stepnogorsk-Kokshetau based fiber-optic line
The lines of communication and the basic properties of the fiber optic link. Comparison of characteristics and selection of the desired type of optical cable. The concept of building a modern transmission systems. The main function module SDH networks.
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????????? ??????, добавлен 10.09.2008????????????? ?????????????? ???????????????????? ???????? - ??????? ?????????? ????? (POTS), ?????????? ?????, Switched 56, ISDN, frame relay, SMDS, ATM ? Synchronous Optical Network (SONET), ?? ??????????? ? ??????????. ???????? ???????????? ????? X.25.
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