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Customer service unit
Telecommunications device From Wikipedia, the free encyclopedia
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In telecommunications, a customer service unit (CSU) is a device that provides an accessing arrangement at a user location to either switched or point-to-point, data-conditioned circuits at a specifically established data signaling rate.
 | This article relies largely or entirely on a single source. (July 2024) |
A CSU provides local loop equalization, transient protection, isolation, and central office loop-back testing capability.
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References
This article incorporates public domain material from Federal Standard 1037C. General Services Administration. Archived from the original on 22 January 2022.
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