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Overview
A limitations of NCA (version 2.0.4) is that it will not be able to establish two way communication if located directly behind a NAT.
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The DIALER sends its outbound call attempts TO NCA
NCA sends all of it's calls TO the B2BUA
The B2BUA must be able to determine the correct final destination of the SIP Invite
None of the devices are configured to use "Outbound Proxies"
