How to call to India & other Countries Cheap & Conveniently

Fortunately, now days there is no monopoly in the Long Distance calling industry, like it used to be for many years. From the USA, Canada and from many other countries, there are many alternatives for making long distance and international phone calls.
One major method for making international calls is by signing up with a Long Distance/International Carrier (Ex. AT&T, MCI...) and every time when you make international calls, at the end of each month, you will receive a bill, where you will be charged for all your calls, based on that specific company