[OpenSIPS-Users] Two OpenSIPS proxies issue

[Ali Pey]

Examine the Contact header of the 200 OK. That's where this usually gets
messed up.

Regards,
Ali Pey

On Wed, Jul 4, 2012 at 3:49 PM, Duane Larson <duane.larson at gmail.com> wrote:

> I have the following scenario
>
>
> LAN <-> OpenSIPS/SBC <-> INTERNET <-> OpenSIPS/Proxy
>
>
> I have the OpenSIPS/SBC device because the firewall that is protecting the
> LAN doesn't play well with SIP.  It has the following IPs (LAN =
> 192.168.88.1), WAN (99.xx.xx.161).
>
> The OpenSIPS/Proxy device sits on the internet and has the following IP
> 50.xx.xx.156.
>
> All of the devices on the LAN point to the OpenSIPS/SBC as their proxy and
> then the OpenSIPS/SBC relays all requests to the OpenSIPS/Proxy.
>
> The issue I am seeing is that when a call is set up after the Callee sends
> the 200 OK the Caller sends the ACK but the ACK is never getting to the
> Callee.  So the Callee keeps sending 200 OKs and eventually when someone
> hangs up the other person doesn't know.
>
> I see that when the Caller sends the ACK it is sent to the OpenSIPS/SBC
> LAN address, then the OpenSIPS/SBC sends the ACK to the OpenSIPS/Proxy,
> then the OpenSIPS/Proxy sends it back to the OpenSIPS/SBC WAN address.  All
> of that is good but the next thing that happens is that the OpenSIPS/SBC
> sends the ACK not to the Callee but to its WAN interface.  I know this has
> something to do with my VIA headers but I am not sure how my config is
> messed up.
>
>
> Here is the siptrace of the call
>
> http://pastebin.com/wpbut5Nb
>
> Here is the current config on the OpenSIPS/SBC box
>
> http://pastebin.com/PsahZEX3
>
>
> Any ideas where I've messed up?
>
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>
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