- Joined
- Jul 18, 2017
- Messages
- 22
- Reaction score
- 1

I do not have the option to whitelist it with the SIP provider.Seems excessive what you're doing.
if it's credentials based then just add a 0 to your username and the registrations will become invalid, SIP unregistered.
Note though, whitelist your 3CX IP with your SIP provider so they dont blacklist you.
This has gone unaddressed for six years. I guess there is no better way than what I'm already doing..
Founded in 2005, when VoIP was an emerging technology, 3CX has gone on to establish itself as a global leader in business communications.