Updated: 04/26/2017 by Computer Hope
channel service unit data service unit

Short for Channel Service Unit/Data Service Unit, CSU/DSU is a hardware device used to connect and translate the signal coming from a digital line to a computer or network. For example, a user or business who has a T1 line has a CSU/DSU connected to their network to translate incoming and outgoing data and allow their network to work over the T1 line.

Computer abbreviations, Network terms, T1, T2, T3