The caller picks up their phone, dials a number in the U.S., hears 2 rings, hangs up. They get called back within 15 seconds. They then make their call. Standard Call Back with PIN Number. The same as Standard Call Back, but when the call back comes, they are required to enter a PIN number.
Receptionist Call Back.
International Call Back Rates are specific to the country of origin and the destination of the call.