ABSTRACT
When the phone line of user has call signal, the FSK decoding module decrypts the call information (Bali et al 2014). Through the form of serial communication, FSK decosv vvvding module sends the decrypted call information (including the calling time and calling number information) to information processing and control module. Information processing and control module converts the received information into the actual phone number, and compares it with list data stored in EEPROM of MCU. According to the comparison results and working mode to choose whether to connect calls.
