Patent ID: 6295344
Filing Date: 2001-09-25
Classification: H04M

Abstract:
A telephone system of a type controllable by travel cards, comprising:a switching station including a switch processor capable of producing call data concerning calls from at least one communication sources;switching computer means capable of processing the call data, said switching computer means controlling said switch processor;communication means capable of capturing the call data including automatic numbering identification and a personal identification number;said communication means capturing the call data at a front end of a call and supplying the captured call data to the switching computer means, and capable of supplying processed data from the switching computer means to the switching station; andsaid switching computer means capable of directing the switching station through the communication means to prevent completion of an attempted call using a travel card from a location indicated by the call data of the attempted call that a caller would not have been able to travel to in the time between the attempted call and an immediately preceding call using the same personal identification number.