channel service unit/data service unit
- A device which combines a channel service unit and a data service unit. The channel service unit terminates an external digital circuit, such as T1, at the premises of a customer, while the data service unit converts data transmitted or received through the external digital circuit into the proper format. Its abbreviation is CSU/DSU. Also called channel service unit/digital service unit.
- acronym CSU/DSU
- synonym channel service unit/digital service unit
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