SYSTEM AND METHOD FOR BLOCKING UNAUTHORIZED OUTGOING CALL ON A COMMUNICATION NETWORK

摘要

The various embodiments herein provide a system and method for blocking unauthorized outgoing calls made by an unauthorized user. The system is programmed by the user to block any attempt made to call an unauthorized number. Incase of a landline system, the system is connected to a telephone line that powers up the unit from the landline and blocks any unauthorized outgoing calls. The system is programmed to inhibit dialing any prefixes or any individual numbers. The system disconnects the phone line from the network and does not allow continuation of dialing when the prefix or the dialing number matches with the unauthorized dialing list/database.

主权项

1. A system for blocking unauthorized outgoing calls, the system comprising:
a voltage converter for converting a supply voltage from a telephone line to +5V DC; a first circuit for disconnecting a telephone line, and wherein the first circuit is a line break control circuit; a second circuit for saving power for a pre-determined time period, and wherein the second circuit is a power saver circuit; a microcontroller comprising a list of unauthorized numbers, and wherein the list of unauthorized numbers are saved on an EEPROM memory of the microcontroller; a tone decoder circuit for decoding a dual-tone-multi-frequency (DTMF) tones from the telephone line, and wherein the decoded dual-tone-multi-frequency (DTMF) tones are sent to the microcontroller; a pulse detector for detecting a dialing pulse on the telephone line, and wherein the detected dialing pulse is sent to the microcontroller; a beep generator for providing a feedback in the form of a tone for accepting a command during a programming operation; a LED controller for providing a visual indication for indicating an ON/OFF status of the system; a reset circuit for switching the system to a default mode; and an ISP programming interface for providing a programming and a reprogramming capability to the microcontroller.