NCIC ripoff scam is well known by the facilities with these payphones - they get part of the loot - the following is from the NCIC website touting their services but which also does NOT list their calling rates!

Telephone Operator Services
NCIC has developed a comprehensive package for the Pay Phone (Card Swipe and Coin), Hospitality and Medical industry that allows Pay Phone Owners, Hotels and Hospitals to gain back revenues lost to mobile and calling card providers.
Our concept is simple!
We provide a competitive calling program with revenue share back to the property or company with whom we market the services. We offer competitive rates, multiple options to bill calls and best of all; we provide easy-to-understand signage that instructs how to use our services.
Whether the service is provided from a pay phone, hotel room, or hospital room, you can count on NCIC to provide the services and the accounting tools that help you realize the gains from our products.

DO NOT USE phones operated by NCIC OPERATOR SERVICE that accept credit cards (Union Station, Chicago IL).

You will be billed a flat "connection charge" of about $10, regardless of whether you call across the street or across the country.

The phones have a misleading display which reads 4 minutes for $1.00, which applies to coin calls only.

The credit card charges are not clearly posted.

I had no change so I had to use my credit card (thinking it would cost a buck or two), and called my wife for under 2 minutes (30 miles away). The cost was well over $10. When I called customer service, they completely defended their misleading business practice of not clearly posting connection charges, and did not offer me any kind of refund or credit (minus the actual per-minute usage charge, of course). I would expect a professional company to charge a "reasonable" amount for a local-toll call of under 2 minutes, not over $10.

What an absolute disgusting rip-off.