Communications system, in particular a telephone system, for connecting mobile subscriber terminal devices
Restricted purpose, commercial, monetary regulation method
Method and apparatus for disallowing the extension of a call through a network
Telephone communications system with portable handsets
Cellular mobile radio credit card system
Radiotelephone credit card data communications
Radiotelephone system adapted to read a credit card
Automated call filter
Systeme d'authentification analogique reciproque entre un terminal et une ligne de transmission
ApplicationNo. 118378 filed on 07/17/1998
US Classes:455/408, At remote station379/114.2, Pre-paid calling account or card379/114.26, Based on unique account code379/127.04Pricing a call made from different account (e.g., calling card, credit card)
ExaminersPrimary: Legree, Tracy M.
Attorney, Agent or Firm
International ClassesH04M 015/00
AbstractA cellular telecommunications system having a security feature which allows only pre-authorized users to complete cellular telephone calls. The system and method recognizes a cellular radiotelephone's pre-programmed and pre-selected telephone number and an automated number identification code (ANI). The pre-selected telephone number is reserved to the prepaid cellular telecommunications system. The cellular radiotelephone transmits the ANI and a dialed number identification system code (DNIS) to a cellular switch, which contacts a host computer for call validation by the pre-paid service provider. This system also allows pre-authorized users to receive and pay for incoming calls as well as purchase additional air time and monthly access fees with convenient prepaid cards.