Coin release mechanism of payphone
Coin return anti-stuffing apparatus and method
Coin return chute for telephone pay station
Coin return mechanism protecter
Coin slot structure for coin call telephone apparatus
Coin telephone box with anti-stuffing coin return chute
Coin telephone data port protection
Coin tone validator for telephone paystations
Coin validation method and apparatus for a coin telephone or sim
Coin-operated telephone apparatus
Coin-operated telephone apparatus
Combination pre-paid and calling card
Combination pre-paid and calling card
Communicating apparatus providing discriminated voice and/or ima
Communication apparatus utilizing digital optical signals
Computer-to-telephone interface
Country to domestic call intercept process (CIP)
Credit card collect call system and method
Credit card telephone station
Credit transaction arrangements