BSNL EV-DO works on 3g CDMA technology and its monthly charges are 550rs now. And what you get for this Rs is worth but the biggest problem with it was that BSNL was not allowing roaming services in it. All other wireless internet services were providing roaming for such services.
Now BSNL has also planned to start roaming for EVDO connections. Yes its confirm news. Even the circulars have beed sent to all the offices and this info i got in one of the BSNL offices in bangalore. According to the circular they are planning to start roaming from Next month and for that the necessary steps are being taken. Also they are going to chage 600Rs per month from next month onwards.
So now no more problem for people who want to travel from one place to another. Now enjoy 3g cdma technology to fullest without any limitations.
This is leaked information. No official announcement has been made. I am just writing here what i got. I am not at all responsible for any effect it creates.