Solved New install, delays on calls, no voice and other issues

[tickledpet]

Hi,

I am a bit of a newbie, trying to figure out how to fix our issues.
We are on the hosted 3CX, are using Fanvil X5U phones
The calls are not coming through most of the time, if they do its after a 10 second delay, then when we answer we don't hear anything and it will then go to voice mail.
We have two location, our main location is behind a Ubiquiti dream machine, and were having all the issues, we have a few phones in another location and their phones are working fine.

We used Provisioning Method
Direct Sip Stun - Remote
on all the devices.

Has anyone had this issue, is there anything specific on the firewall that we need to do?
Do we need to set up a SBC?
If we need a SPC, any settings needed to get it out from behind the Ubiquiti dream machine firewall?

Thank you all!

 

[Saqqara]

Have you configured the phones the 3cx supported way ?

If you have multiply phones at each location, install SBC server to save yourself alot of hassle if the phone supports sbc server

If you install SBC only need to allow https port, and 3cx tunnel port (udp / tcp port 5090) out, not forwarding rules are required

 

[AndreasY_3CX]

Hi @tickledpet,

Configuring a direct SIP STUN for connecting IP Phones is not supported in 3CX hosted systems nor recommended.

If you want to configure IP phones more easily and with no issues, you must configure them behind an SBC.

On how to configure your SBC, click here