[SR-Users] Proxy Registrations offset port

[Klaus Darilion]

This setup is possible with Kamailio, Opensips, whatever.

First, the problem is not that you receive the message an port 8080. 
Even if you receive on 5060 and forward the request you will have problems.

This is a typical load-balancer/outboundproxy setup and there is no 
common solution for proper routing.

version 1: use the "Path" extension, if your "VoIP plattform" supports it.

version 2: depending on if the "voip plattform" does NAT traversal or 
not, you may have to rewrite the contact header when forwarding requests 
to the VoIP plattform, and in the other direction.

Thus, use ngrep/wireshark to analyse the message flow. Take a look at 
the IP addresses in Route/Contact and R-URI. Then fix it where it is wrong.

regards
Klaus

On 09.03.2012 15:32, Robert wrote:
> I've been playing with OpenSIPS and am willing to change over if it
> means I'll get a more informed answer from this community..
>
> I need to set up a proxy forwarding server that can listen on a port
> other than 5060 – I.e. 8080 and forward the registration requests to
> another Voip platform we have that is running on 5060.
>
> I've been able to do this under OpenSIPS but I'm having issues with
> inbound calls. It could be a NAT issue.
>
> Basically listen on 8080 – forward any and all registrations to x:5060 —
> which I've done using rewritehostport
>
> Anyone have any good example configs for this? I'm a n00b at this
> OpenSER stuff – but have been around asterisk / freeswitch / portaone
> for a while.
>
> Thanks in advance
>
>
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