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

From: Alastair Johnson
Subject: Re: [Linphone-users] Linphone apparently does not work properly with the same outbound proxy servers
Date: Mon, 18 Oct 2010 11:47:36 +0100
User-agent: KMail/1.13.5 (Linux/2.6.34-gentoo-r11; KDE/4.4.5; x86_64; ; )

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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