[Freeswitch-users] NAT problems migrating from Version 1.0.trunk (13168M) to Version 1.0.trunk (15166)

[Chris Fowler]

I've tried all sorts of debug and parameter changes over the weekend,
but still can't figure out the correct solution.

If I disable timers on the sip profile then all works fine.
 <param name="enable-timer" value="false"/>

But that seems like a hack; not a correct solution.  With the build
13168M (which is pre the new NAT functionality) everything worked fine.

The SIP trace shows the phones and FreeSWITCH happily exchanging NOTIFY
and "200 OK" messages.  Audio's working - just calls timeout after 100
seconds with RECOVERY_ON_TIMER_EXPIRE.  Is enforcement of this timer new
functionality - and really just exposing a problem I've always had
before?

The config is (50 Polycom Phones -> NAT -> Internet -> Amazon EC2)

I would really appreciate some pointers on what to look for; additional
trace that might reveal something.

Thanks, Chris.


On Fri, 16 Oct 2009 20:06:52 -0700, "Chris Fowler" <chris at fowler.cc>
said:
> Hi,
> 
> We've been using 13168M in production for some time now (works great). 
> I want to get us onto the latest build but am having problems getting
> NAT to work.
> 
> Phones can register; can dial 9999 test #, but after 100 seconds the
> call is disconnected with error:
> 2009-10-16 19:52:26.936618 [NOTICE] sofia.c:4038 Hangup
> sofia/internal/1001 at myhost.mydomain.com [CS_EXECUTE]
> [RECOVERY_ON_TIMER_EXPIRE]
> 
> I took the standard internal.xml and vars.xml files from the new build
> and made the following modifications - which worked previously:
> 
> modify conf/vars.xml and update
>   <X-PRE-PROCESS cmd="set" data="domain=myhost.mydomain.com"/>
> 
>   <X-PRE-PROCESS cmd="set" data="bind_server_ip=1.2.3.4"/>
>   <X-PRE-PROCESS cmd="set" data="external_rtp_ip=1.2.3.4"/>
>   <X-PRE-PROCESS cmd="set" data="external_sip_ip=1.2.3.4"/>
> 
> Modify conf/sip_profiles/internal.xml
>  <param name="aggressive-nat-detection" value="true"/>  <param
>  name="ext-rtp-ip" value="$${external_rtp_ip}"/>  <param
>  name="ext-sip-ip" value="$${external_sip_ip}"/>  <param
>  name="NDLB-received-in-nat-reg-contact" value="true"/>  <param
>  name="NDLB-force-rport" value="true"/>  <param
>  name="NDLB-broken-auth-hash" value="true"/>
> 
> The big difference I note is that on PRODUCTION (which works) "sofia
> status profile internal" yields:
> URL                     sip:mod_sofia at 1.2.3.4:5060
> BIND-URL                sip:mod_sofia at 1.2.3.4:5060;maddr=10.250.35.224
> 
> But on Test I see:
> URL                     sip:mod_sofia at 10.250.66.210:5060
> BIND-URL                sip:mod_sofia at 10.250.66.210:5060
> 
> Any ideas?
> 
> Thanks, Chris.
> 
> 
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