What is the difference between modem and CSU/DSU device ?

Posted on 2009-06-27
Last Modified: 2012-05-07
What is the difference between modem and CSU/DSU device ? both used at the customer premises and generally supplied by ISP for the WAN connectivity. Are both same ? Thanks!
Question by:beer9
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Accepted Solution

jfer0x01 earned 250 total points
ID: 24728934

modem stands for modular/demodulator - it basically convert digital to analog signals and vice-versa

a  CSU/DSU device that converts digital frames into a WAN frame, normally found in T-1's

Basically, they are the same thing, but a CSU/DSU is a more concert device while a modem refers to a concept


Expert Comment

ID: 24728938

meant to say concrete not concert

Author Closing Comment

ID: 31597584
Thank you :-)

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