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[Linphone-users] Problem with NAT and registration

From: Thomas Berlinghoff
Subject: [Linphone-users] Problem with NAT and registration
Date: Wed, 15 Jun 2011 08:57:44 +0200
User-agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv: Gecko/20110501 Lightning/1.0b3pre Thunderbird/3.1.10

Hi all,
I don't get a working SIP registration when NAT is enabled. The problem
is that linphone uses the local IP address in the "Via-" field of the
REGISTER request (the external IP address is used in the "Contact" field
only). As the response is always send to the topmost "Via" address (only
further requests are directed to the address mentioned in the
"Contact"-field), the SIP server is unable to process the request.

Another problem with the registration is that linphone continues trying
to register the account even I have removed it from the settings. In
this case I would expect linphone stops trying to register it.

I'm using linphone-3.4.3 on Windows XP.



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