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SIP Trunking issue

Hey Everyone,
Need some help with a SIP trunk issue that's driving me crazy

So I've got my SIP trunk set up, followed the docs, whitelisted all the IPs you guys listed, tried different protocols and ports... but inbound calls just aren't working at all

The weird part is:

When I connect a phone number to the trunk (even a wrong one), Vapi says it's configured but doesn't throw any errors

My SIP trunk backend shows nothing is actually connected to it

When someone calls the number... nothing happens, no routing at all

I've been troubleshooting this for a while now and can't figure out what I'm missing. Anyone know what might be going on or what I should check next?

Happy to share logs/config details if needed
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