Ever wonder what payphone companies are doing with all the calling cards and 1-800 numbers these days? According to Wikipedia,
In the United States, a payphone operator collects an FCC-mandated fee of 49.4¢ from the owner of a toll-free number for each call successfully placed to that number from the payphone. This results in many toll-free numbers rejecting calls from payphones in an attempt to avoid this surcharge; calling cards which require the caller to dial through a toll-free number will often pass this surcharge back to the caller, either as a separate itemized charge, a 50¢ to 90¢ increase in the price of the call, or (in the case of many pre-paid calling cards) the deduction of an extra number of minutes from the balance of the pre-paid card.