Paystation theft inhibiting circuit
Paystation transmitter ground detect circuitry
Permanent connection public telephone appliance
Pin fraud and shock prevention system
Plastic coin receptacle for pay telephones
Plug-in telephone facility
Pre-paid phone card system with promotional link
Pre-paid phone card system with promotional link
Preferred billing rate pre-paid telephone calling card
Prepaid calling card external/adjunct database processor
Prepaid cash card
Prepaid limited usage calling card
Prepayment data transmission system
Prepayment product or service dispenser
Providing account usage fraud protection
Public communications services vending method and apparatus
Public telephone clip-on fraud prevention system
Public telephone set
Public telephone set with internal charge processing
Public telephone system