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  1. 3CX VM is freezing up

    In the last week, I found my 3CX system in an unresponsive state multiple times. Oddly, enough it always seems to stop working at night time and it acts like the whole VM got "paused". It literally stops working from one minute to another and when it happens there is no network or log activity...
  2. Solved Trunk Keep-Alive stopped working

    While I haven't been able to discover the root cause for this issue, I found that a UDP timeout of 3 minutes seems to resolve the problem. At least, it hasn't happened for 4 weeks in a row now. Thank you to everyone trying to help!
  3. Solved Trunk Keep-Alive stopped working

    OK. The problem has happened again today and I was able to do a capture using the built-in capture tool. Also installed Wireshark on a local machine and loaded the file. Now, it is quite long and I am not sure how I can sanitize it to post a copy here. On a brief scroll through I discovered...
  4. Solved Trunk Keep-Alive stopped working

    Hi John, I am happy about any feedback because I have never encountered this type of issue before. I also agree with you on your sentiment about 3CX and the SIP provider not being at fault. So, for starters, I have now increased the UDP timeout from 30 to 60. I also found that there is a second...
  5. Wireshark on 3CX Debian with Xming

    I have found an older thread suggesting to install wireshark on Debian which worked just fine. I also had no problems installing Xming on Windows 10. Once done, I created a config for Xming following the instructions from the older thread found here...
  6. Solved Trunk Keep-Alive stopped working

    Thank you! I have only used Wireshark on Windows before. So, I will have to do a little bit more research to figure out how to run it on Linux.
  7. Solved Trunk Keep-Alive stopped working

    I have made some progress after doing a reboot. Now, the first time I click the config file for xming, it is starting putty and putty is asking me for the password, but then nothing happens. I just don't get a window running wireshark.
  8. Solved Trunk Keep-Alive stopped working

    OK. I got wireshark installed, but I am having trouble with running xming on Windows 10. I mean it seems to be running and I was able to do the configuration (multiple windows, putty, etc.), but when I click the config file no windows are being opened. Not sure what went wrong. I will do some...
  9. Solved Trunk Keep-Alive stopped working

    Sorry for being out of touch, but the problem simply vanished for a few weeks. Sadly, it slowly returned last week and it got really bad today. Luckily, I found that I don't need to reboot the system every time. I can just edit and save the trunk instead. Anyhow, I am in the process of...
  10. Solved Trunk Keep-Alive stopped working

    Hi John, This is great feedback. I am using Sophos SG though and it seems that most issues are around Sophos XG (tested it, but didn't think it is quite ready for production yet). Anyhow, I just checked with the command shell and see the following values: cat...
  11. Solved Trunk Keep-Alive stopped working

    I have another update. When I finally upgraded my system to Debian 9, the issue came back. Now, I understand that this might be coincidence and it also happened only once so far. Furthermore, I have applied the latest beta today. So, I am going to monitor this once more this week and if the...
  12. Solved Trunk Keep-Alive stopped working

    Well, my environment is VMware on the latest released version. I would think that's pretty common and it also limits hardware issues. I have also double checked if there was a firmware upgrade on the Sophos security appliance, but there hasn't been one for more than 6 weeks now. On my end, I...
  13. Solved Trunk Keep-Alive stopped working

    @John Kirkwood Glad you got your problem solved! @Yiannis I did some more research and all collected logs indicate that 3CX stops doing re-registering after some time. Sadly, it is still not clear what's triggering this. Earlier this week I did some network capture and confirmed that the issue...
  14. Solved Trunk Keep-Alive stopped working

    Thank you for your detailed information. This is definitely a register trunk. As I said before, the provider sees the initial register and also re-registers, but apparently the re-registers stop at some point in time. Once that happens, my phone send an invite (seen by the provider) and it is...
  15. Solved Trunk Keep-Alive stopped working

    Thank you Yiannis! This is exactly the information I was looking for. I also have some feedback for you. This is not what the provider is seeing. They have confirmed that they are accepting a large range of values and seem to have a preference for higher values. That said, their technician...
  16. Solved Trunk Keep-Alive stopped working

    Thank you for your reply. PhonePower is owned by Broadvoice. It handles their private phone services in the US. My 3CX server is sitting in a hosted environment on a 100/100 connection. It handles the business calls for my company using another provider (no issues there). Since my company is...
  17. Solved Trunk Keep-Alive stopped working

    OK. I have called Broadvoice / PhonePower again today and they did a packet capture for me. As part of this exercise, support has asked me to increase my re-register time to 3600 which I did. They also confirmed that their system receives the correct requests and that my system confirms the keep...
  18. Solved Trunk Keep-Alive stopped working

    Hi @YiannisH_3CX Your explanation makes sense. I was assuming that the problem is on their end. That's why I called them first. So, let's assume that my system doesn't reply to their request. What that be a firewall problem or could there be an issue with 3CX not responding? The number is...
  19. Solved Trunk Keep-Alive stopped working

    We suddenly encounter 403 forbidden errors on outgoing (and potentially incoming calls). When I called our service provider (Broadvoice/PhonePower), they found that our system is no longer sending keep alive requests. I believe this problem has started with the recent upgrade to 15.5.9348.3...
  20. Secure SIP Problems

    Yes, we have since realized that using STUN extensions for all desktop phones was a bad idea and moved back to using our IPSec VPN which didn't have the extension to extension problems. At the moment, one phone is working fine using TLS over IPSec and all mobile clients seem to work fine with...
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