Controlling and enhancing handoff between wireless access...
Controlling surveillance monitoring of mobile station...
Converged service control for IMS networks and legacy networks
Convergent communications system and method with a rule set...
Cost accounting during data transmission in a mobile...
Cost control in a telecommunications system
Cost control management in telecommunication systems
Cost control system for access to mobile services
Credit based management of telecommunication activity
Credit information in a mobile phone
Data conversion in telecommunication systems
Decision-basing apparatus, and an associated method, for...
Device agent
Device billing agent
Device billing agent
Device billing agent
Device management network that facilitates selective billing
Differentiated charging in packet data networks
Digital signal receiver with charge metering equipment
Disposable wireless telephone and method