Sending voice call to python program

If a call is made to the simcard card in the HL7692 attached
to my pi, how do I get a python script to answer the call?
Could you perhaps tell me what needs to be in the Python code?

Please see https://stackoverflow.com/questions/23532038/read-response-at-command-with-pyserial

You need to send ATA to answer the voice call.