ＤＳＵ

noun

digital service unit; DSU

Telecommunications term for a device that connects a customer's equipment to a digital line.

• ＤＳＵはデジタル回かい線せんの終しゅう端たん装そう置ちとして使つかわれる。

  A DSU is used as a termination device for digital lines.