Hi,

welcome to Webune Support Forums.

We have the best WEB HOSTING FOR YOU - If you are ever in need of web hosting for your websites, please give us a try.

today's questions is regarding a great network device which is used for backend connectivity. its a CSU-DSU.

the quesion is: what layer of osi does csu/dsu work?

the answer is: Layer 1 - The Physical Layer

Hope that answers your question.

Please let us know why you needed to know this information. it will greatly help us write more tutorials like this one and it will make it easy for people like you to find.

Thanks

Webune Support