Method and apparatus for authorization based phone calls in...

Method and apparatus for awarding and redeeming prepaid telephon

Method and apparatus for awarding and redeeming prepaid...

Method and apparatus for awarding and redeeming prepaid...

Method and apparatus for awarding and redeeming prepaid...

Method and apparatus for executing automatic calling card access

Method and apparatus for extending a pre-paid calling card limit

Method and apparatus for extending a pre-paid calling card...

Method and apparatus for facilitating the making of card calls

Method and apparatus for internet-based telephone access to...

Method and apparatus for portable pay phone

Method and apparatus for processing telephone calls charged to c

Method and apparatus for processing telephone calls charged to c

Method and apparatus for summaries of prepaid instrument transac

Method and assembly for providing telephone calling credit in co

Method and combination for providing telephone calling and...

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...