Calling card validation system and method therefor
Calling line identification adjunct for use with a communication
Calling party identification announcement service
Calling party-paid wireless telephone service
Calling-party-pays call processing for cellular and paging
Calling-party-pays call processing for cellular and paging
Calling-party-pays call processing for cellular and paging
Calling-party-pays call processing for cellular and paging
Cascade accounting of connection-oriented communication...
Centralizing storage and verification element for telephone netw
Charge information method
Charging for an IP based communication system
Charging for an IP based communication system
Charging for usage of a telecommunications network
Charging in a communication system
Charging method in telecommunications network
Charging system in data communication network
Charging unit price determination/information apparatus and comm
Churn amelioration system and method therefor
Churn amelioration system and method therefor