Thanks for the response. Is there a way to make a feature request here for future updates?This is not tested nor supported, im afraid, so the answer here is no.
You can use the tested and supported Sip tunks that support SMS only,
Voxtelesys
Bandwidth
Flowroute
Twilio (worldwide)
Founded in 2005, when VoIP was an emerging technology, 3CX has gone on to establish itself as a global leader in business communications.