SIP register unsuccessfull
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Hi,
I have some trouble with SBG3600 which have two WAN interfaces in use (LTE and ETH). I set forwarding policy - all traffic from my SIP server (3CX if it's relevant) goes through ETH WAN. It works for most of the time but sometimes all SIP trunks unregister. I still have www access from this server but PBX don't receive any reply from service provider.
All I need to do is go to router management > Broadband open Edit window and without doing any changes click Apply. After a while all trunks are registered. I didn't have this sort of problem on my previous router.
How to solve it or debug this issue?
Best regards
I have some trouble with SBG3600 which have two WAN interfaces in use (LTE and ETH). I set forwarding policy - all traffic from my SIP server (3CX if it's relevant) goes through ETH WAN. It works for most of the time but sometimes all SIP trunks unregister. I still have www access from this server but PBX don't receive any reply from service provider.
All I need to do is go to router management > Broadband open Edit window and without doing any changes click Apply. After a while all trunks are registered. I didn't have this sort of problem on my previous router.
How to solve it or debug this issue?
Best regards
0
Comments
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Your SIP server is on the Lan side,right? In my office, I also place the SIP server, but SIP server is on SBG's wan side not lan side. It's working fine. Just curious what NAT rules and forwarding policy did you set.0
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Hi,
check attached pictures
even if WAN interface is called DSL it's ethernet (there is obligatory modem from service provider set in bridge mode).
Regards0 -
Hello Michal,
Please capture the packets from both WAN and LAN interface when the issue is happening. I want to see what may go wrong by analyzing the packet.
Here I show you the procedure so that you can capture packets from the device directly.
https://businessforum.zyxel.com/discussion/731/how-can-captured-packets-be-save-as-wireshark-compatible-files-via-tcpdump-command-in-the-sbg3300#latest
Charlie0
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