[lifty]

Does anyone know if you could you this combo to creat some kind of VoIP gateway that could forward calls to an app on an iPhone over the Internet?

[gsich]

There is something for Asterisk called chan_dongle.

Then you can use any SIP client on your iPhone to connect to that Asterisk and make/recieve calls.

[8K832d7tNmiQ]

You could probably develop one if you want. This is exactly what ride-hailing app Grab did in their app to make a call without exposing their phone numbers by forwarding calls to their server instead.

[_joel]

I'm pretty certain they wouldn't have used a raspberry pi for that