Configuration for charging in a telephone network and method...
Configuration tracking system
Congestion control system for telecommunications
Consolidated billing system and method for use in telephony...
Consumer contact toll optimizer
Control of prepaid balance status notification
Controller for accessing services from multiple providers of ser
Controlling setup or continuation of a call charged from a...
Cost negotiation for communication sessions
Cost negotiation for communication sessions
Credit calling service system
Customer profile based telephone card billing
Customizing prepaid service
Customizing prepaid service
Data processing system for communications network
Data processing system for communications network
Data processing system with real time priority updating of data
Debit card system without centralized server
Decreased-size representation employed with portion of...
Destination device billing according to call recipient