I know this might not be totally on-topic for the list, but I figured the list participants might have experience in this domain, so I&#39;m lobbing it out there... <br><br>I&#39;ve got some situations where I&#39;d like to connect users who are oftentimes sitting on very locked-down networks (ie, corporate networks) to some SIP-based VoIP infrastructure, but the idea of opening random UDP ports on the networks in question is a no-go.  As a result, I&#39;m experimenting with TURN over TCP or TLS as a solution to enable connectivity... however, I can&#39;t find any clients that implement the latest specs (X-Lite 4 appears to speak an older version of the TURN protocol; QJsip doesn&#39;t work for me; etc. etc.).<br>
<br>Do folks here have any suggestions for TURN-compatible clients?  I care mostly about PC for the time being (ie, just a proof of concept) but a PC/Mac/Linux solution would be great too.<br><br>Thanks for any insights,<br>
--rafal<br><br>