I am brand new to HA, so I don’t know whether my finding is common knowledge.
The Twilio Call integration is quite useful. I was hoping to find a way to route the service through my Twilio SIM card (instead of my home network). This would be useful if one wanted to receive a notification that the power had gone out (with the machine plugged into a backup battery, of course). Or, perhaps you want to set up a small HA environment for a motorhome, or similar.
I purchased a Huawei E3372h-510 and flashed it with “stick mode” firmware as I describe in this post. Then, with my Twilio SIM up and running, I simply added the device: /tty to my twilio_call configuration in the yaml file.
notify:
- name: test_call
platform: twilio_call
device: /dev/ttyUSB0
from_number: +12345678900
Edit: I made some changes to my setup and I’ve lost the ability to do this. …and I cannot recreate it. I’d delete the thread if I could. Perhaps someone will chime in with a solution.