Csu meaning

See DSU/CSU.
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Data circuit terminating equipment, i.e., data communications equipment (DCE), that provides the customer interface to a digital circuit. A CSU performs a number of functions, including isolation of the data terminal equipment (DTE) from the circuit for purposes of network testing, and electrical isolation from the circuit for protection from aberrant voltages. Many contemporary CSUs also have the ability to perform various line analyses, including monitoring the signal level.The CSU also serves to resolve issues of electrical coding between DTE and the circuit, and to ensure that ones density is achieved. Depending on the carrier network, 15
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