[Serusers] OptiPoint420 behind a NAT device

[hiSIPatH]

Hi Michal,

Thx for the reply. It seems that there isn't such an option in the OptiPoint.
But to be honest i am a little confused, because i am able to register
my OptiPoint. So NAT seems to work with the REGISTER but doesn't with
the INVITE.



On 11/16/06, Michal Matyska <michal at iptel.org> wrote:
> Check whether there is configuration option "symetric signalling" (e.g.
> use the same port for sending requests and receiveng replies) in your
> OptiPoint UEa and check that to be used.
>
> The asymetric signaling does not work when the UE is behind NAT, the
> port is not open for replies.
>
> The same applies to RTP streams, you have to setup the RTP to be
> symetric.
>
> Michal
>
> On Thu, 2006-11-16 at 13:19 +0100, hiSIPatH wrote:
> > Hi all,
> >
> > i have a ser setup (CentOS 4.4/ser 0.9.6) with several ip phones
> > (SNOM320 and Xlite30) and every thing seems to work fine. The ser
> > server has a public ip address 89.xxx.xxx.xxx and the ua are behind a
> > NAT device (corporate FW).
> >
> > I want now to add some OptiPoint420 SIP but was unable to get them
> > working. That means that the registration is ok and calls to the
> > Optipoints from other ua (xlite or Snom) work but i was unable to
> > place a call from Optipoint to other ua.
> >
> > In the trace you can notice that the INVITE is sent to ser with Src
> > Port 38625 and Dst Port 5060. But the response from ser is sent to Src
> > Port: 5060 (5060), Dst Port: 5060 (5060). The result is of couse ICMP
> > Destination unreachable (Port unreachable).
> >
> > I have rtp proxy and ser running on the same server and my ser.cfg
> > looks like the one from the SER GettingStarted
> > http://siprouter.onsip.org/doc/gettingstarted/ch08s02.html). I read
> > the doc about "handling of NAT using RTP Proxy" but was unable to
> > change the config to get this scenario with OptiPoint working. Has
> > anyone managed to get OptiPoint to work with ser?
> >
> > thx in advance?
> >
> > No.     Time        Source                Destination           Protocol Info
> >      14 8.907171    89.xxx.xxx.xxx         89.xxx.xxx.xxx
> > SIP/SDP  Request: INVITE
> > sip:8001 at registrar.mydomaine.com;transport=udp, with session
> > description
> >
> > Frame 14 (972 bytes on wire, 972 bytes captured)
> > Ethernet II, Src: AminoCom_02:02:02 (00:02:02:02:02:02), Dst:
> > AcerTech_9c:00:8d (00:00:e2:9c:00:8d)
> > Internet Protocol, Src: 89.xxx.xxx.xxx (89.xxx.xxx.xxx), Dst:
> > 89.xxx.xxx.xxx (89.xxx.xxx.xxx)
> > User Datagram Protocol, Src Port: 38625 (38625), Dst Port: 5060 (5060)
> > Session Initiation Protocol
> >
> > No.     Time        Source                Destination           Protocol Info
> >      15 8.907394    89.xxx.xxx.xxx        89.xxx.xxx.xxx         SIP
> >    Status: 407 Proxy Authentication Required
> >
> > Frame 15 (772 bytes on wire, 772 bytes captured)
> > Ethernet II, Src: AcerTech_9c:00:8d (00:00:e2:9c:00:8d), Dst:
> > AminoCom_02:02:02 (00:02:02:02:02:02)
> > Internet Protocol, Src: 89.xxx.xxx.xxx (89.xxx.xxx.xxx), Dst:
> > 89.xxx.xxx.xxx (89.xxx.xxx.xxx)
> > User Datagram Protocol, Src Port: 5060 (5060), Dst Port: 5060 (5060)
> > Session Initiation Protocol
> > _______________________________________________
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> > http://lists.iptel.org/mailman/listinfo/serusers
>
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