So, just to be certain I understand you:
You are in the United States, trying to call to India, not in India trying to call an Indian number, correct? Domestic calls are not supported in India.
You can call numbers in India using Google Hangouts.
If this is correct, then you probably have an incorrect digit map, perhaps interpreting the country code for India (+91 or 011 91) as 911. I'm not the digit map expert, so I'll let one of the folks who is an expert take a crack at it.