Intermitted SIP trunk issues

[jwiewel]

My PBX has been up and down all day. My SIP trunk Fails to register. during the time I cant register the SIP trunk if I run a firewall test stun-us.3cx.com, stun2.3cx.com and stun3.3cx.com all fail. then come back up a short time later, less then 45 minutes. Then stays up for a period of time. Then goes back down. Any Thoughts on what the problem could be?

 

[SweetAction]

Is the internet connection OK? How about the NAT device (firewall usually) in front of the PBX and all the networking to the PBX (switches, etc).

 

[jwiewel]

Yes, everything else is fine. Nothing has changed. No changes to firewall settings no changes in the switching, or switch configs. Last time it went down, it went down for seven minutes, and has now been up for over an hour.

 

[SweetAction]

When it's down next, you'll need to do some tests. From the PBX can you actually get to the internet? To the SIP provider endpoints? For both stun servers and sip trunk to have an issue means the issue is likely on your network side, not on the 3cx stun side or sip provider.

 

[TheodorosG_3CX]

Have you checked this with your ISP?

 

[jwiewel]

Yes, they say they have changed nothing. Odd thing I can't tracert any of the stun servers. From three different ISP's. Is there a way to turn off stun?

 

[jwiewel]

Also probably unrelated but my Annual subscription just renewed could that have caused any issues?

 

[jwiewel]

Sorry to keep adding to this but I restored from a backup from a couple days ago before this all started and saw this error

The following service(s) were interrupted: 3CXIVR01 3CXCallFlow01 3CXQueueManager01 3CXPhoneSystem01 3CXMediaServer

Any thoughts?

 

[TheodorosG_3CX]

Those services stopped which can be a crash or just a restart of the services.
Note that STUN is required also for the clients and the license renewal is not related.
Any changes to your firewall or any DPI enabled?

 

[jwiewel]

no nothing has changed. 3cx has ran great for years this randomly started about 5 o'clock this morning central time. It's almost like I can't reach any 3cx services since my license got renewed. I am on version 18.0 update 8 if that helps.

 

[jwiewel]

I am back connected to the SIP. I tried to refresh the 3cx License and it says it cant reach the license server

 

[jwiewel]

Correction, I was

 

[TheodorosG_3CX]

What is the current version of the PBX?
Also if you run the firewall checker, does it pass successfully?

 

[jwiewel]

Version 18 update 8 Build 939 at this point no. If my Trunk is up then it does pass but when it is down it does not pass

 

[TheodorosG_3CX]

This issue with your network. If there is stability you shouldn't have this problem.

 

[jwiewel]

ok what could be causing that? my router logs so nothing being blocked from 3cx

 

[TheodorosG_3CX]

This is not something i can assume. There many reasons that can happen. This requires captures and logs to determine.