Method for providing a quantity of telephone time from an...
Method for providing additional service by a communication...
Method for providing and billing for functionalities of a...
Method for providing call-charge information as well as call-cha
Method for providing called service provider control of caller a
Method for providing information by calling from information pro
Method for providing virtual private network services
Method for recording non-communication intervals during a commun
Method for server-assisted data processing for a plurality...
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...