Unable to make outgoing calls T46u Yealink over Verizon

[LarkyBark]

I have an issue where our T46U's are not making outgoing calls using a Verizon 5g router.

* The phone is connected to the Zoom portal and shows online.

* The phone can receive inbound calls.

* If I change the ISP I can make outbound calls.

* Other Zoom supported phones connect to the portal and can make calls over the 5g, just not the Yealink we have.

* Can make a Zoom phone call using the desktop app over the 5g connectino.