Registered but no Calls working

I have been trying to connect a Yealink T46S to the FreePBX system for days now. The registration via PJSIP works, at least it appears in the “asteriskinfo” as online.

If I call this extension (501) from another extension, I get a dial tone, but the phone does not ring. All outgoing calls are terminated after a few seconds with a “timeout”.

I have several phones on this system that work wonderfully, only the Yealink T46S is causing problems. It is located in another office and is connected to the Internet via an LTE router.

Anyone have any ideas what else I could adjust/change?

Please provide a call trace via pastebin

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