Flowroute is randomly getting SIP 401 Unauthorized errors when trying to connect inbound calls to FreePBX. It’s only a handful of calls per day, and it is not consistent when a call will fail to be connected.
I believe I have the flowroute trunk setup correctly, including permit IP ranges, etc. I also have all the “edge strategy” routing configured on the Flowroute side. But for some reason, Flowroute gets an unauthorized error every so often.
How can I troubleshoot / fix this? It’s a bit hard to reproduce and test. I’m left just trying to call the DID a bunch to try and trigger the error. Anything I could be missing here, any settings I can tweak so the Flowroute inbound connection never receives the SIP 401?