Humayun / Nauman
Setting up a call center is not difficult. Especially if you are planning to start on a small scale. Humayun, in order to setup a 20 seat facility without knowing where you plan to set it up, It would cost you around 7-10 million Rs.
To start with you biggest expense will be the building and technology. After that invest wisely in HR and BD and you will surely succeed.
Best of luck to all enterpreneurs.