SIM800L Do something when you receive a call

Good evening, thank you for the good work with the forum I have learned a lot here.

I am trying to do a project with the sim800l module, but it is not easy :frowning: send sms I am able and receive too, but what I want is that when the module receives a call I want it to compare the number and turn on a lamp by example. How can I do this?