NAT Only works part of the time

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Cyber Elite

Also check the logs, they should show what/where its getting blocked and you can adjust you policies accordingly.

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L2 Linker

Going through the logs, nothing is being blocked by policy to/from by private address/NAT'd Address and the PBX.  Actually, the policy is set to allow any application, Service is Application-Default.  I enabled logging on my Interzone rule, however nothing is being dropped by policy, that I can find.

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Cyber Elite

I hear ya it can be a pain. We use Skype and I can tell you that even having the application set to any and service to application default was not enough. Skype/Lync use like almost every port 50K and up :(. Does your SIP terminate internally or does it flow out over the internet to the provider? I would also say call the provider and see if they can run a trace while your making the test call just to see if they see anything on their end.

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L2 Linker

Just an FYI, the issue was finally determined to be a bug in Pan-OS 8.0 - 8.1.6.  (PAN-103023).  

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