07-08-2012 06:18 PM - edited 03-17-2019 11:26 PM
Hi all,
As we can see at the site below,
"a SIP to SIP call when one of the participants is behind a NAT (unless both endpoints are using ICE for NAT traversal)"
is handled as a traversal call by VCS.
But how does the VCS know that one of the participants is behind a NAT?
Does VCS check if there is a difference between a value of "Via" header in SIP header and "C" type in SIP body?
Best Regards,
Kotaro Hashimoto
Solved! Go to Solution.
07-08-2012 07:53 PM
If SIP UA’s sip contact address differs from source IP address, then VCS will determine this SIP UA is behind a NAT and treat as firewall traversal client/call.
07-08-2012 07:53 PM
If SIP UA’s sip contact address differs from source IP address, then VCS will determine this SIP UA is behind a NAT and treat as firewall traversal client/call.
07-08-2012 07:57 PM
This is a reason call will treat as non-traversal call on some of Jabber Video (Movi) public deployment with mobile connection (i.e. 3G mobile card) where IPS assign public IP address on client PC directly.
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