DTU DSU

Hey I am an IT student and I want to know about the DTU and DSU so can you please tell me some details for the same ?

Well a CSU/DSU is a digital-interface device used to connect a data terminal equipment (DTE), such as a router, to a digital circuit, such as a Digital Signal 1 (T1) line


The CSU/DSU implements two different functions.

A CSU/DSU is the equivalent of the modem for an entire LAN.


The channel service unit (CSU) is responsible for the connection to the telecommunication network, while the data service unit (DSU) is responsible for managing the interface with the DTE.

I am not too sure what a DTU is in my opinion it works same as the DSU works


Types of computer Modems


Removable Modem -

Internal Modem

Onboard Modem

External computer modem

External Modem


Modem Illustration

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Answered By StudyChaCha Member