[Freeswitch-users] Outbound dialing to SPA3102 behind NAT

[covici at ccs.covici.com]

Only way I can think of is have the spa3102 register as an fs gateway
using user name and password and bridge to the gateway -- and make sure
natis enabled on the 3102, so fs can detect its external ip address.

Nick Rosier <nick.rosier at gmail.com> wrote:

> Hi,
> 
> I've currently got an Asterisk server running at home but want to
> switch to FS on my external server (located in a DC).
> 
> Configuration:
> - 2 SPA3102 connected to 2 PSTN lines and 2 phones (on Line1)
> - Couple of voip phones
> 
> The Asterisk server is running on my local network as are all the
> other devices; everything is connected to a DSL-router with NAT.
> The SPA3102 are configured as Trunks in Asterisk with the following
> configuration:
> allow=ulaw
> canreinvite=no
> context=from-trunk
> disallow=all
> dtmfmode=rfc2833
> host=dynamic
> incominglimit=1
> nat=never
> port=5061
> qualify=yes
> secret=trunk1
> username=trunk1
> type=friend
> 
> The SPA3102 are configured to register their PSTN-line to the Asterisk
> server. Outbound routes are configured to use 1 of the 2 Trunks.
> 
> I want to do the same thing with my FS running on a server in the DC.
> I've setup all the devices and can make internal calls. Inbound calls
> on the PSTN lines are also forwarded to the correct voip-devices. I
> just cannot figure out how to configure outbound dialing to the
> PSTN-lines. The Wiki
> (http://wiki.freeswitch.org/wiki/SPA3102_FreeSwitch_HowTo) shows I
> should configure them as following:
> 
> <include>
>   <extension name="To PSTN">
>     <condition field="destination_number" expression="(.*)">
>       <action application="bridge"
> data="sofia/internal/${destination_number}@[IP address of
> SPA3102]:5061" />
>     </condition>
>   </extension>
> </include>
> 
> The problem here is that the SPA3102 are behind my router so the only
> possibility would be to setup some port forwarding to on the router
> with different ports for the 2 devices. I would rather not do that so
> I was wondering if there is an easier/better way to do that.
> 
> Any ideas?
> 
> Rgds,
> N.
> 
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-- 
Your life is like a penny.  You're going to lose it.  The question is:
How do
you spend it?

         John Covici
         covici at ccs.covici.com