V14 Sporadic one way audio

[RobertKroll]

Hello,
I have been using 3cx for many years and I seem to be having an issue I simply just can't solve. I have a deployment that I am using that seems to be experiencing one way audio several times during the day. I reset all services and the system is up and running again for a few hours until the next time. I haven't changed any settings in the system since upgrading to v14 so I am hoping somebody can assist. My system overview:

SonicWALL NSA2600
Windows server 2012 Hyper-V w/4 guest operating systems
Windows server 2012 running 3cx v14
Yealink T-28 telephones (x15)
2 remote 3cx softphones
2 remote telephones via VPN (SonicWALL TZ105)

I haven't noticed anything in the event logs or the 3cx server logs (Unless I am missing something that somebody more educated than I may notice).

If you can assist, I would be appreciative.

Regards,
Robert Kroll

 

[bardissi]

Two things come to mind.
1. Network / router / isp issues
2. Vm Host resource issue.

 

[RobertKroll]

Thank you for the reply, can you elaborate? I have checked, but cannot find issues.

 

[bardissi]

Thank you for the reply, can you elaborate? I have checked, but cannot find issues.

First things first, are you running the sonicwall hot fix ?

 

[adrianc]

Robert

We have an NSA 2600 running with 3CX 12 without any issues of audio.
It's running firmware SonicOS Enhanced 6.2.2.1-14n--HF156374-6n but the hotfix number is NOT for anything 3CX related.

 

[RobertKroll]

Thank you for the input. Your input prompted me to check the firmware. The problem was indeed a firmware issue. What was happening is that the SonicWALL was remapping the ports which was a bug in the firmware. Performed the following:

Disabled remapping on outgoing NAT policy.
Turned off Consistent NAT.
Turned off STUN on PBX.
Restarted all services.

So far, 48 hours, so good...

Regards

 

[adrianc]

Hi Robert

Which version of firmware are you running now?

Adrian

 

[bardissi]

Happy to hear that the Sonicwall hotfix was the culprit!

 

[RobertKroll]

Firmware Version: SonicOS Enhanced 6.2.2.1-14n--HF152075-2n