Pre-paid wireless interactive voice response system with...
Pre-paid wireless interactive voice response system with...
Pre-paid wireless interactive voice response system with...
Prepaid billing support for simultaneous communication...
Prepaid calling time processing: a method and apparatus for...
Prepaid calling time processing: a method and apparatus for...
Prepaid calling time processing: a method and apparatus for...
Prepaid calling with warning announcement
Prepaid long distance call system and method
Prepaid long-distance telephone service system with flexible ope
Prepaid phone card service using speech recognition
Prepaid phone service for both wired and wireless...
Prepaid phone service for both wired and wireless...
Prepaid real-time web based reporting
Prepaid services with security provisions to protect against...
Prepaid services with security provisions to protect against...
Prepaid telephone calling card with distinct PIN numbers
Prepaid telephone calling card with distinct PIN numbers
Prepaid telephone calling card with message recording...
Prepaid telephony system and method of activating a prepaid...