Tried SkypeIn but had some problems with clipped voices and delay. Now using local call forwarding through www.CheapCalls4all.com. The rate to India mobile is 16.9 cents per minute and the connections are clear. Have also diverted the "ring to" number to China and Hong Kong on previous business trips. China is 8.9 cents per minute and Hong Kong is 5.9 cents per minute. Very, very reliable.

The best way I suggest is buy a Virtual Global Number - search in google u will get websites. Buy that local USA state number - and setup the forwarding to INDIA number. Now go to your T Mobile and setup to forward to above local number you have bought.

This is a little more do it yourself, but Siptraffic.com is under two US cents a minute to an Indian Mobile. You'll need to get a DID elsewhere and connect the number to SIPTraffic using something like PBXes, Voxalot, etc.