Re: [Ekiga-list] Confusion about ports

[Damien Sandras <dsandras seconix com>]

Le mardi 20 janvier 2009 à 11:26 +0100, Wolfram Wagner a écrit :
> Dear list,
> 
> I am using Ekiga behind a Fritzbox that is using SIP itself. That's
> why it is not possible to use the default SIP Port and forward it to
> the machine where ekiga is running on.
> 
> I fixed most of the problems by editing gconf with gconf-editor
> apps/ekiga/protocols: I changed:
> 
> - sip/listen_port to 5070
> 
> - ports/udp_port_range to 5061:5100
> 
> I see potential problems to use the default transmissing ports, as my
> phone (FritzBox) might use them too, even if I can forward them.
> 
> These ports can be forwarded in FritzBox and most things work:
> 
> - Call to echo test (500 ekiga net): Works
> 
> - Call to CallbackRequest(520 ekiga net): It calls me back, Audio
> works, Video is not comming back.
> 
> I understand that this means, if the session is negotiated with me
> from the outside, the video signals do not reach me.
> 
> Assuming this is true, can anyone explain me, the meaning of those
> ports and if they can be redefined.
> 
> My understanding is:
> 
> udp/5060 default contact port for incomming calls SIP port.
> 
> udp/5000:5100 default transmission ports for audio and video
> 
> When I redefine them to be 6080 and 6000:6100 ekiga is listening on
> port 6000(!), SIP messages contain the right ports, but ekiga cannot
> make calls.

Probably because it can't bind to 6080, then it tries the first of the
generic UDP port range. You can check the ekiga -d 4 output to determine
this.
-- 
 _     Damien Sandras
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