title: how answer a phone call with python through serial port?
body: <p>I've been trying to answer a phone call using a serial port, but i only get <code>'RING\r\n'</code> and after a while <code>'NO CARRIER'</code>. is there any command to answer a call?</p>
  
  <pre><code>import serial 
  ser = serial.Serial() 
  ser.port='COM3' 
  ser.baudrate=9600 
  ser.open() 
  while True: 
      lectura = ser.readline() 
      if lectura == "RING": ser.write("OK") # To answer the call.
  </code></pre>