Asterisk 11.19.0 And 401 Unauthorized

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I have 4 Polycom phones behind a firewall. I cannot get them to dial as is says “URL Disabled” so its not registered to my server.

I have tried nat=no, nat=force_rport,comedia still no go.

I have sip.conf set for bindaddr= my server IP.

I have uncommented the localnet2.168.1.0/ in sip.conf

How do I tell what its NOT liking and which setting to change. I have restarted asterisk each time and or rebooted the phone.

This seems like it is doing the right thing.
(I changed the IP addresses below…)
<--- Transmitting (NAT) to --->
SIP/2.0 401 Unauthorized Via: SIP/2.0/UDP
From: “524” ;tag