Method and system for charging a set activation fee for pay...

Method and system for ensuring the security of the supply of...

Method and system for optimizing bandwidth cost via caching...

Method and system for transferring telecommunication-time...

Method and system for use with phone calls originating from...

Method and system for using a frequent shopper card as a phone c

Method for accommodating multiple calling cards during a single

Method for locking to the user's card in a portable radio teleph

Method for processing collect calls

Method for processing collect calls

Method for providing equal access dialing for pre-paid...

Method for providing telecommunications-based services

Method for the acceptance of calling charges for individual...

Method of accepting charges in individual connections and a...

Method of billing a communication session conducted over a...

Method of billing a value-added call

Method of prepaying for consumption of telephone calls

Method of providing message service for pinless limited access t

Method of time-to-talk calculation

Methods and apparatus to manage collect phone calling limits