If you want to send and receive SMS thru GHL but have it sent or received via your Telnyx number (no GHL phone number required), my Telnyx Bridge app is now live in the marketplace.
** It is currently only setup to handle SMS. I'm about 80% completed with the call routing (for instance, where someone can call your Telnyx phone number but you can answer it via the GHL app or call out via the GHL app but it actually uses your Telnyx number) feature.
Since a lot of us use Telnyx now thought this might be beneficial - send and receive SMS without needing a GHL phone number. If you run into any issues, let me know. Things always seem to work perfectly in testing and hitch in production when its live lol.