System and method for a prepaid bundled telecommunications accou
System and method for administration of an incentive award...
System and method for anonymously establishing telephonic connec
System and method for implementing calling card security and...
System and method for providing high-speed communications...
System and method for using a prepaid card
System and method for using a prepaid card
System and method therefor of preventing fraud on pay phone...
System for controlling usage of phone debit cards
System for the payment of telephone calls in a private self-swit
Systems and methods relating to multipurpose cards
Telecommunication-time metering device utilizable for prepayment
Telephone calling card service system integrating virtual...
Telephone calling card system with abbreviated code...
Telephone calling card with enhanced features
Telephone card having calendar function and system for using sam
Telephone set
Telephone set
Telephone system
Telephony platform and method for providing enhanced...