Implementation of telephone remote control system based on FPGA

This paper presents an intelligent control system with the ability of remote control based on a public telephone communication network. The remote operation with user authority by transmitting password and operation code through telephone network is realized by using a FPGA controller. The main function circuits of the designed system include ring detector, DTMF decoder, pick-phone circuit, audio prompt, and the FPGA controller. The system has highly configurable, stable and reliable feature.