Telephony system and method with improved fraud control
Time balance based prepaid subscriber database and reporting
Timer for controlling telephone usage
Toll call rate provider
Toll fraud detection system
Toll ticketing record generation for billing of intersystem hand
Toll-free telephonic communication method and device
Tracking and notification of telephone plan minute status
Tracking and notification of telephone plan minute status
Traffic control in a telecommunications system
Traffic data collecting arrangement comprising a template data m
Traffic measuring apparatus and method
Transaction billing for special service telephone numbers
Transaction processing platform for faciliating electronic...
Transmission of charging signals on a data transmission path
True family telecommunication service