Intelligent queuing of transaction records
Intelligent-networked telecommunication system which...
Interactive and information data services telephone billing syst
Interactive and information data services telephone billing syst
Interactive handling of disputes
Interactive telephone operator terminal
Interactive voice personal and live connection 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
Internet-based message delivery with PSTN billing
ISN call interrupt
Least cost rooting system
Least cost routing system
Least cost routing with repeated searches for lower cost route