Bangalore Hutch number in Hyderabad

Hai i am using Bangalore Hutch number in Hyderabad.So i am in roaming.Per A call for incoming i am paying of charge 3.90Rs/-Is There any chance to reduced in that, in any process, like if i activated for any roaming charge.Is there any facility to activate for roaming.ifi activate howmuch i need to pay the money for rental per month.
Please reply me soonly