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I have a VSX 7000 set-up and am making calls to a Polycom Viewstation. On the Viewstation side they can see and hear us, they also see their self. But we can only see our self and a black screen on the VSX 7000 side any idea''s? I have followed the instructions from this link which sounds identical but no success.http://community.polycom.com/t5/Video-Endpoints/VSX7000-NO-Video-During-Call/td-p/8244 .

 

Thank you

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this is a very typical firewall issue that has been described in several threads.

Bottom line is you are most likely displaying a non-routable private IP address to the farend. Your firewall is doing its job and allowing out bound but without a static public IP address for the return trip you will not have traffic inbound.

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