Are you using the main Admin user? It should show "A" in the top-right.Hey! I couldn't find network in settings.
That's V18, Alpha version. Not V16 official.
Well, it's tricky now that you upgraded.I'm still figuring out how to to downgrade SIR.
Founded in 2005, when VoIP was an emerging technology, 3CX has gone on to establish itself as a global leader in business communications.