A tip for people who might be going to the US on a business trip and want to call India..I just got back from the US and i realised that one of the issues someone new faces is that of calling back home. I also faced this issue and tried 3-4 service providers but was not satisfied with call quality. Finally I ended up using PCO4NRI for the last month of my stay and I was pretty satisfied with it. Good call quality and cheap rates (2cents/min). So if anybody is going to the US and wants to call India, I would suggest this is one of the options you can look at.