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WAN (Terms (Network Interface Unit (NIU) = NTE? (Provides signal…
WAN
Terms
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CSU/DSU - channel service unit/data service unit - Layer 1 device connecting the serial ports of a router to the SP network. (Typically in a cisco WIC)
Local Loop - pair of copper wires connect the demarc to the closest switching office, known as the a central office (CO) - BT exchange
Central Office (CO) A phone company building that connects a custmoer network to the providers Switching/Ethernet network. also called a POP
Toll Network. The toll network is a trunk line inside a WWAN providers network. A collection of switches and facilities owned by the ISP
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T-Series
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Europe has E1, 32*64Kbps channels or 2.048 Mbps
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