![airtel logo](http://telegyaan.com/wp-content/uploads/2007/10/brand.gif)
Cellular operators have got a new issue to wage a war. Its for the STD rates. Today Airtel announced a new recharge coupon enabling the users to make STD calls at Re. 1. The coupon costs Rs. 37 which has validity for a month and Rs. 10 as talktime. For the time being, the coupon is only limited to Mumbai and Maharashtra circle. Expect to hit other circles soon.