Adaptive telephone receive control
Adjustable height pedestal for public and coin telephones
Administrative monitoring system for calling card fraud preventi
Answer detection method and apparatus for coin telephone sets
Answer supervision circuit for paystation telephone with non-mut
Answer supervision detection unit for pay telephone system
Anti-explosive return coin discharge unit for the cabinet of a c
Anti-fraud device for use with a coin operated telephone instrum
Anti-stuffing coin realigner
Anti-stuffing coin return assembly
Anti-stuffing device
Anti-stuffing lead-in-chute on coin acceptor for payphone
Apparatus and method for securing an armored cord and restraint
Apparatus for conditioning automatic coin validation signals, an
Apparatus for facilitating the making of a calling card telephon
Apparatus for instruction in use of telephone
Apparatus for optically coupling a terminal unit to the public t
Apparatus for querying a central service
Applications platform for a telephone system gateway interface
ATM phone card system