3CX SBC disconnecting and reconnecting at least two times an hour... Where do I start?

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wars

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Hey all, happy new year!

I'm after a bit of advice. I've noticed our SBC is having issues over the past few days (but today it's a problem because previously it was over the weekend with no traffic, now it's a weekday and we are actively using the system). It's been emailing each time it goes down and then comes back up again.

I've SSH'd in to the SBC and checked the log at /var/log/3cxsbc/3cxsbc.log but theres such a vast amount of information, I'm not exactly sure what I'm looking for. It's running on a new Intel NUC (chose against a Pi4, thought the NUC would be a bit beefier for stability and so far, until now, it's been fine).

I've updated the SBC via SSH and rebooted - (apt-get upgrade then apt-get update) and attached a screenshot of the statistics page from the PBX. It's running version 18.1.36 and the PBX is on 18.0.5.418.

When it disconnects, it unregisters our desk phones and terminates any current calls (as expected).

I've downloaded the 3CXTunnel log file from the system but I know that only shows the system's side. I've attached an extract from the most recent disconnect (redacted some info).

We aren't experiencing any disconnects with our internet service, it's pretty reliable. We are using a 1000/1000 leased line with a VDSL fail over and dual MX250 firewalls in HA.

Thanks in advance!
 

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Last edited:
Yes, opnsense does offer the possibility to prioritizing certain traffic. I just will have to learn how adjust that properly ... .
 
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