Good keywords, but i say this keyword doesn't suit .co.in.
Ppl who use calling cards for calling their homes are living abroad but not in india, so obvious choice would be to look for a .com or .net , but generally will not go to .co.in, do you see my point?
ppl 'in' india are the targetted visitors for co.in, but not 'out' of india . just IMO.
what are the traffic stats?