Solved Weird inbound call timeouts (3cx sleeping)

[Sampl]

Hi,

i am experiencing a rather weird behavior on our 3CX system.
after a while more then an hour or so inbound calls will no longer happen until i make an outbound call first to wake up the trunk or something.
internal calls and outbound calls always keep working.

is there a setting that keeps the trunk alive?

 

[sip.bg]

Have you run 3CX firewall checker and what is the result ?

 

[Sampl]

Ah, nice one.
am reading the documentation now on the following errors.

• • • testing 3CX SIP Server... failed (How to resolve?)
      • stopping service... done
      • detecting SIP ALG... detected (received ***********) (How to resolve?)
      • testing port 5061... full cone test failed (How to resolve?)
      • starting service... done
    • testing 3CX Tunneling Proxy... done
      • stopping service... done
      • testing port 5090... done
      • starting service... done
    • testing 3CX Media Server... failed (How to resolve?)
      • stopping service... done
      • testing ports [9000..9255]... failed (How to resolve?)
        • testing port 9000... full cone test failed (How to resolve?)
        • testing port 9001... full cone test failed (How to resolve?)
        • testing port 9002... done

everything after that was green.

 

[apostolis_3CX]

Hi Sampl,

The below links could be helpful
https://www.3cx.com/docs/manual/firewall-router-configuration/
https://www.3cx.com/docs/3cx-phone-system-v14-ports/

 

[sip.bg]

Try fixing the issues into your router, 99.9% this causes the "sleep" effect, if using a supported provider, but not only.

 

[Sampl]

Cool! i disabled SIP ALG on our firewall and it helped all but 1 issue the firewall checker was reporting.

• resolving 'stun-au.3cx.com'... done
• resolving 'stun2.3cx.com'... done
• resolving 'stun3.3cx.com'... done
• resolving 'sip-alg-detector.3cx.com'... done
• testing 3CX SIP Server... failed (How to resolve?)
  • stopping service... done
  • detecting SIP ALG... not detected
  • testing port 5061... full cone test failed (How to resolve?)
  • starting service... done
• testing 3CX Tunneling Proxy... done
  • stopping service... done
  • testing port 5090... done
  • starting service... done
• testing 3CX Media Server... done
  • stopping service... done
  • testing ports [9000..9255]... done
    • testing port 9000... done
    • testing port 9001... done
    • testing port 9002... done

working on that part and will let you know what the results are.
Thanks!

 

[sip.bg]

What make is your router and does it have any built-in phone ports ?
Some routers have built-in VoIP functionality and utilize ports 5060, 5061.
If so, you need to disable them or change ports used (e.g. to 5160, 5161).

 

[Sampl]

What make is your router and does it have any built-in phone ports ?
Some routers have built-in VoIP functionality and utilize ports 5060, 5061.
If so, you need to disable them or change ports used (e.g. to 5160, 5161).

i have Sophos XG210 firewall

 

[sip.bg]

I don't have experience with Sophos, but look on this related post: https://www.3cx.com/community/threads/3cx-behind-a-sophos-sg-firewall.53045/
This article could be useful also: https://community.sophos.com/kb/en-us/123523

 

[Sampl]

Hi Guys,

the issue has been fixed.
it was settings on our firewall i had our IT service provider (WAN Managers) have a go at it at some point yesterday and they have informed me that the issue is now fixed, which i can confirm. i will give them a call on Monday for the explanation on how they fixed it and post that here.

Thanks for your help!

 

[apostolis_3CX]

Hi Sampl,
Glad to hear your issue was resolved.
We will be waiting for your feedback.

 

[Sampl]

Hi All,

so what fixed the final port issue we were having was to unload the SIP Helper as well.
Thank you all for the help!