Why does the call quality vary depending on the type of firewall or network address translator (NAT) connection I have?
The call quality varies because the voice media takes different routes (either peer-to-peer or via relay servers) depending upon the type of NAT you are behind, and this can cause varied levels of voice quality.
Where's the Contact Customer Care button? With so many improvements to Messenger since the version you're using (lots more features and reliability), we figured you're ready to move up. So get your upgrade and with the new version, rest assured if you have questions, you’ll find that friendly button on its help pages.
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