Make A Phone Call; Answer The Phone And Hang Up; Send Sms - DFRobot TEL0097 Manual

3. Press the Boot power button and wait for the SIM card registering a network properly, the Net indicator led flashes slowly (3s once).
4. Slide the function switch to USB_DBG, then we can communicate directly with SIM808 chip through the serial port assistant.
Make a Phone Call
Send AT in the serial port assistant, if it returns OK, it means that serial communication has been established. Follow the Figure, enter AT commands, you should
get the same content.
Answer the phone and Hang up
Send SMS
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Make a Phone Call
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Answer the phone and Hang up