Glossary

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DUA
Data Service Unit
  • A device used for interconnecting data terminal equipment for the public telephone network.
  • A type of short-haul, synchronous-data line driver, normally installed at a user location, that connects a user's synchronous equipment over a 4-wire circuit at a preset transmission rate to a servicing dial-central-office. Note: This service can be for a point-to-point or multipoint operation in a digital data network. See also customer service unit.