Earlier in December I mentioned MTNL lauching 3G servies. They had a soft lauch and it was freely being provided as a demo of what a 3G service experience is.

Now MTNL has a tariff to those services and its a promotional offer for a period of 3months after which we could see the tariffs either increase or dip.

Here is a comparison of data charges in replacing network calls with VOIP calls.