01-16-2019 05:55 AM
we have some places with unifi infrastructure, like USG-Switch-AP, before we go in ubiquiti solutions, we are using Mikrotik. Now when we reject mikrotik solutions we have problem with your one. We using 3CX like as communicator, and we using SIP protocol for our VoIP telephones, and problem is, that your product probably blocks those transport protocols or something, because after our changes it works correctly on Mikrotik, now when someone is calling to another person they can hear only one site, like you calling to me - i can hear you, you can't hear me, and reverse What you can tell me about it? In another case, it's work correctly on another site when we using Ubiquiti too, but it's like a random, some phones work and some doesn't.. :/
Anyway those phones are Yelink,T23P mostly.
a month ago - last edited 4 weeks ago
Are the phones provisioned to use the 3cx STUN server?
Is UPNP enabled in the USG? To use UPNP it must be enabled in the USG in two settings. Settings-Network & Settings-Services.
On the 3cx you can try Option PBX Delivers Audio for each extension
a month ago
Yes, they are. Remember that, they works fine on mikrotik... :\
UPNP is not needed to use 3CX phones, we know it because some of our sites works fine without it.
We tried this option, still nothing.. We still have deaf phones on call..
4 weeks ago
Where is your 3cx server hosted? The firewall test only makes sense if the 3cx server is behind the USG and not hosted somewhere else.
As far as I understand, your problem is, that you have serveral VoIP Phones behind the USG and each one should connect to the 3cx server which is located somewhere else and this does not work. Am I correct?
If this is the case I would suggest, you configure one of your phones directly with a trunk. If this works, the problem is located on the 3cx server and not on the USG. As long as we have configured the trunk directly on our VoIP phone we did not need to make any configurations on the firewall.