Intelligent-networked telecommunication system which...
Inter-exchange carrier access
Interactive and information data services telephone billing syst
Interactive and information data services telephone billing syst
Interactive billing control system
Interactive handling of disputes
Interactive telephone operator terminal
Interactive value-added telecommunications system and method
Interactive voice personal and live connection telephone...
Interconnect traffic analysis
Interconnect traffic tracking
Interfacing system for an international-type pay-telephone
International origination to domestic termination call blocking
Internet assisted return call
Internet telephone system, access point apparatus, and...
Internet telephony call pricing center
Internet user finder
Internet-based message delivery with PSTN billing
Internet-based message delivery with PSTN billing
Internet-based message delivery with PSTN billing