Error "Received incoming SIP connection from unknown peer"

Hi ! Please help
I have two asterisk servers.
On first server ip addresses: and (internal)
On second server ip addr:
On both asterisk servers i have sip trunks who point out each other

Calls go from first asterisk to second but i have error
NoOp("SIP/", "Received incoming SIP connection from unknown peer to 670101281") in new stack
Firewall turn off on both servers

Please help ) Where is my mistakes ?

That’s not an “internal” address.

The error tells you plainly that you don’t have a peer (trunk) for that IP address.

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