digital private automatic branch exchange


Also found in: Acronyms.

digital private automatic branch exchange

[′dij·əd·əl ¦prīv·ət ¦ȯd·ə¦mad·ik ′branch iks‚chānj]
(communications)
A central communications switching system for a local-area network, which employs existing telephone wires in a building for the connection of telephones and computer terminals and systems.
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