Prepaid cellular telephone system

Details Prepaid cellular telephone system Prepaid cellular telephone system

H - Electricity

04

Q

H04Q 7/22 (2006.01) H04M 17/00 (2006.01) H04Q 7/32 (2006.01)

Patent

CA 2213037

A cellular telephone system maintains a database of prepaid cellular telephone service accounts, including an amount of money-remaining in each account. The system uses modems in a blank-and-burst mode to send data and commands over a voice channel. When a call is attempted over a mobile unit, the system sends identification information stored in the mobile unit to adebit processing unit, which then permits the call and debits the associated account if a sufficient amount of money remains in the account, otherwise it terminates the call.

Système de téléphone cellulaire capable de maintenir une base de données de comptes de services téléphoniques prépayés et de déterminer notamment le solde de chaque compte. Le système se sert de modems en mode neutralisation-salve pour transmettre des données et des commandes au moyen d'une voie téléphonique. Lorsqu'il y a tentative d'appel sur un poste mobile, le système transmet les renseignements d'identification emmagasinés dans l'unité mobile à une unité de traitement des débits, qui autorise l'appel et débite le compte correspondant si le solde du compte est suffisant. Sinon, l'unité de traitement met fin à l'appel.

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