The Design of the Black and White Lists about the Telephone

• Published in: 2010 International Conference of Information Science and Management Engineering Vol. 1; pp. 57 - 59
• Main Authors: Fu Guangchun, Kong Xiaohong, Zhang Wei, Chen Yanfeng, Du Liufeng
• Format: Conference Proceeding
• Language: English
• Published: IEEE 01.08.2010
• Subjects: black and white lists; Crystals; Decoding; Frequency shift keying; HT9032; MCU; Microcontrollers; Relays; Switches; Timing

The MCU controls the HT9032, and reads the telephone numbers from the telephone line. The MCU analyses and processes the data. If the numbers of dialing are the same as the saved numbers, the call is normal. The design has realizing the white and black list on the telephones.