Method for tracking effectiveness of telephone response...
Method for transmitting data signals on analog subscriber lines
Method for transmitting tariff data to a subscriber unit
Method for transmitting voice or data in a wireless network depe
Method for viral distribution of ringback media
Method of accounting prepaid online internet service credit...
Method of announcing information pertaining to a called...
Method of associating multiple prepaid cards with a single...
Method of associating multiple prepaid cards with a single...
Method of billing a communication session conducted over a...
Method of billing a communication session conducted over a...
Method of billing a communication session conducted over a...
Method of billing a multiple service representative conference c
Method of billing in an abbreviated dialing service
Method of billing in an abbreviated dialing service
Method of billing in an abbreviated dialing service
Method of billing in an abbreviated dialing service
Method of charging for services, network node, and gateway node
Method of ensuring call processing for intelligent user
Method of extracting a call set-up failure probability and a pre