I visited one of the biggest BSNL dealer in Frazer Road on January 31st, 2011 and asked details about porting. He clarifies all my doubts and provided MNP and CAF forms. At that time I wanted to port my Idea mobile to BSNL. But It was quite surprising that whenever I tried to send the message to 1900 for porting code, the error message flashed "message sending failed". The mobile had positive balance and was about one yeear old. After a few failed tries I finally did the same thing from my Airtel number. Airtel's response was instant and I finally got porting code. I filled the form accordingly and instantly they provided me the sim and charged Rs. 60.00 for FRC. I would like to say that the person on the counter was so busy and was receiving 2 phones at he same time and dealing with the customers simultaneously. By the way he mentioned me that I have to wait for five to six days to complete the process. After 7 days, When nothing happened I visited to the dealer again