PSTN CALLER ID MODULE FOR ARDUINO/PCDUINO
This is a PSTN caller ID module with a chipset HT9032D. When someone is calling (the calling telephone must not be private number), the caller ID module will output the caller ID through the serial port (TTL level) in the format of hexadecimal data. The packet includes date/time/phone number, etc. The package will consist of bytes showing call coming, which shows ox55 for more than ten times, then followed by ox04, after which will be bytes represent data length/date/time/phone number/BCC.