Network controlled telephone for the visually impaired

Network implemented pay telephone set

Online method and apparatus for the interactive creation of...

Pay phone call control apparatus for allowing calls using pre-pa

Pay-per use for data-network-based public access services

Payphone management system

Pre-paid phone card system with promotional link

Pre-paid phone card system with promotional link

Preferred billing rate pre-paid telephone calling card

Prepaid calling card external/adjunct database processor

Prepaid cash card

Prepaid limited usage calling card

Prepayment data transmission system

Public telephone set

Real-time call rating and debiting system

Real-time call rating and debiting system and method for...

Removable subscriber identification module for a mobile radio te

Secured disposable debit card calling system and method

Self-computing credit card telephone paystation method and syste

Smart card reader and transaction system