Method of time-to-talk calculation
Methods and apparatus to manage collect phone calling limits
Modular public telephone for outside use
Monitoring system for remote devices
Motion detection for preventing removal of a fixed wireless term
Multi-function general purpose transceiver
Multi-function general purpose transceiver
Multi-function general purpose transceiver
Network access pay telephone and conversion kit
Network access pay telephone, conversion, and method
Network controlled telephone for the visually impaired
Network implemented pay telephone set
Online method and apparatus for the interactive creation of...
Pay phone
Pay phone
Pay phone
Pay phone box structure
Pay phone call completion method and apparatus
Pay phone call completion method and apparatus
Pay phone call control apparatus for allowing calls using pre-pa