BSNL has announced a new promotional offer for prepaid users in Kerala. Starting from today till Diwali i.e. October 17, a user will get 10 percent additional talk time on top-up recharges of Rs. 100, Rs. 200 or Rs. 500. In addition to this, users can also avail unlimited GPRS voucher that will cost Rs. 20 for one day or Rs. 199 for the whole month.