The International Callback system is an application add-on to the GSS system. Callback performs International Callback Account processing and offers automated account functionality with account control and management incorporated in the database.
A subscriber to the International Callback system places a direct dial call to the call back provider's number, lets it ring a specified number of times and hangs up. This call gives the Callback number to the Callback system - the system tells the Callback number to call the subscriber back. Then the subscriber answers, dial tone is provided and the call can be completed at less expensive outbound rates

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 What exactly is International Callback? International Callback services provide you with a phone number or website in the U.S. that you will contact from abroad. Simply calling the number provided or accessing a special webpage will trigger a call to the phone number you are currently at, no matter where in the world you may be.

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