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

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!
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.


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


Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial

meant to say concrete not concert
beer9Author Commented:
Thank you :-)
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today

From novice to tech pro — start learning today.