All external calls dropped randomly

[Darkseed]

Hi Guys.

We have a new 3cx deployment hosted in the Azure cloud - version 18m build 2 (build 307)

Has anyone encountered wherein all external calls will drop? This occurs randomly regardless of time and number of calls.
One thing I did notice is that when it drops, some calls are attempting to get in the queue but cant. In 15 seconds, calls will resume normally.

I have narrowed it down to external calls only. Have raised a case with our trunk provider, but they say it is a pbx issue.
We have checked the network - no drops , server - no issues , and the 3cx event logs, and cannot see any errors, hardware is way above specs. Firewall checks are all clean.

Raised a support ticket with 3cx and understandably they will ask for a packet capture. This would be very difficult as it only occurs once or twice a day on a live system. Is there anything else to check.
.

 

[leejor]

As a first step, I would check the 3CX Activity Log (Verbose), to see which end drops the call, and if all dropped calls end the same way. Next step would be a packet capture if the log doesn't provide enough information..

 

[ChrisC_3CX]

You could indeed check the Activity Log for more info if you don't have a packet capture, but, if you've already contacted 3CX Support I highly recommend you stick with that ticket and provide all data they requested. I know it might be hard to perform a packet capture for an issue that occurs intermittently but if you mention this to our Support Team I'm sure they will be able to provide you with an alternative method to get what they need.

Let us know how it goes.