I have done Three yrs diploma in computer science and engg. & I have 4 yrs of exp in telecom sector.

Can I go for MBA correspondance course.

Why would you think you couldn't?

So kindly suggest me how I could do this

As a general rule anyone with a Bachelor's degree and work experience can apply for MBA studies and have a good chance of being admitted; dependent of course of the type of work experience (refuse collector vs manager of customer service) and of the Bachelor's transcript (grades).

Do what? You really need to define your question more specifically.

I have done three yrs diploma in computer science .

Now I want to do MBA (correspondance).coz I am also doing job.

I have overall 4+ yrs of exp. In Telecom sector.

So, Please suggest me from where or which university I can do this.

That's my question.

Do a search on the course of study you want. Then contact universities and see if they offer online classes.