We are having issues with our inbound calls not coming through. When calling in there is just silence. Outbound still seems to function 100%. This started suddenly about two weeks ago with no changes made to any configuration, no network or otherwise. We have SIP trunks with signalwire and can see t…

[image] acolyte: … but we do see an INVITE in the sip logs. Did you mean “did not see …”? If so, and your PBX is behind a NAT and you don’t have the signaling port forwarded, it’s possible that the NAT association was lost. Or, it could be dropped if SW sent the INVITE from an address othe…

[image] Stewart1: Did you mean “did not see …”? Yes sorry, we do not see it. [image] Stewart1: If so, and your PBX is behind a NAT and you don’t have the signaling port forwarded, it’s possible that the NAT association was lost. Or, it could be dropped if SW sent the INVITE from an addre…

Capture traffic on the WAN interface of your firewall and report whether the failing INVITE appears there. If not, I’d open a ticket with SW (or possibly your ISP), supplying those details. If yes, you should be able to see where it is getting blocked.

Okay so it seems like one of Signalwire’s IPs for sip.signalwire.com (159.65.244.171) is not allowing inbound calls to come through. But the only other IP I’ve seen our trunks register to (178.128.235.81) works fine. Is there a way to force our trunks to only register to that IP with a setting in Fr…

[image] acolyte: Is there a way to force our trunks to only register to that IP with a setting in Freepbx? Sure, just set Outbound Proxy to sip:178.128.235.81\;lr\;hide but that’s not a good idea – if that server fails or becomes inaccessible, you won’t be able to make or receive calls. …

Setting a manual host entry/override on our firewall to resolve our client specific domain for signalwire seems to force it to register to the 178.128.235.81 IP. It’s not ideal, this is a temporary workaround, we currently have an open ticket with signalwire regarding this issue. But I did not know…

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