This Project can be used in home, shops, offices etc. It keeps tracking of both Incoming and Outgoing Calls. It has a built in Caller ID. The incoming and the dialed numbers are displayed on the LCD display. The system will display the numbers over the LCD display.
The Microcontroller is used to control the whole system it completely control the LCD display and the DTMF decoder. It gets the numbers through the DTMF decoder and display it over the LCD (Liquid Crystal Display).