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Re: [Linphone-users] Linphone apparently does not work properly with the

From: Simon Morlat
Subject: Re: [Linphone-users] Linphone apparently does not work properly with the same outbound proxy servers
Date: Fri, 22 Oct 2010 10:05:07 +0200


Indeed I don't see what is the difference between what you call the
"outbound proxy" and the other "proxy".
Normally, in SIP, a proxy is considered "outbound" from the point of
view of the client when all SIP requests go through this proxy, even if
they are not related to the proxy's domain.
In order to properly diagnose the problem, a full linphone log is
required for the caller and the callee.

Best regards,


Le lundi 18 octobre 2010 à 11:47 +0100, Alastair Johnson a écrit :
> On Sunday 17 October 2010, Sergey Abramov wrote:
> > Helllo!
> > I tried to work with Linphone 3.3.2 for Windows and Linux using the
> > SIP-provider Telphin ( Telphin uses a different proxy
> > server and outbound proxy server. Linphone apparently does not work
> > properly with the Telphin outbound proxy server. If Linphone
> > registered to proxy server, then there are
> > one-sided connections through NAT. If Linphone registered to outbound
> > proxy server, then it rings and connects
> > normally only once and then it must re-register because then the
> > server always sends a signal BUSY.
> > Thanks.
> > Sergey
> I think we have different understandings of the term 'outbound proxy'. To me 
> an outbound proxy is a proxy server such as siproxd sitting on or near your 
> NAT device, fixing the many problems NAT can cause with SIP. It sounds to me 
> like you have a problem with some types of NAT that is inherent to SIP, not a 
> problem specific to linphone. I have similar problems, and use siproxd on my 
> firewall to fix them.
> It's also possible we understand the same thing by 'outbound proxy' and that 
> your network is rather different to the usual configuration here. In that 
> case 
> you may just have configured linphone incorrectly as its outbound proxy 
> configuration isn't very clear. In the account settings "SIP Identity" and 
> "SIP Proxy address" are for your registration details, in your case using 
> The outbound proxy is configured in the "Route (optional)" 
> section using something of the form <sip:your.outbound.proxy;lr> so I guess 
> yours should be <;lr>. You may also need to include the 
> port number.
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