[asterisk-users] Asterisk calls between 2 private networks

Eric Wieling EWieling at nyigc.com
Thu Feb 7 11:39:28 CST 2013

The easiest thing to is renumber one of the networks so they are not using the same address block.   

-----Original Message-----
From: asterisk-users-bounces at lists.digium.com [mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Frank
Sent: Thursday, February 07, 2013 12:27 PM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: Re: [asterisk-users] Asterisk calls between 2 private networks


That is a solution that I am envisaging.
But I would really love to try to work out with my issue first. It will allow me to deploy more phones in separates buildlings in the future. If I do the IAX solution, it means that for every building, I need a box.. 
Which I would like to prevent.

On 2/7/13 10:46 AM, A J Stiles wrote:
> On Thursday 07 February 2013, Frank wrote:
>> My apologies if this topic was already discussed in the past.
>> Here is my scenario:
>> Network A -
>> 1 Asterisk
>> 1 Digium phone
>> Router does NAT from the public IP to asterisk, and forward ports 
>> 5060tcp/udp and 10k-20k udp
>> Network B -
>> 1 Digium phone, registering to the public IP of network A
>> My SIP.CONF has:
>> nat=yes
>> localnet=
>> externaddr=public_ip_of_network_a
>> directmedia=no
> My  (lazy)  solution to this problem was to throw hardware at it .....
> Bearing in mind that Asterisk will run on just about any old scrapper  
> (or even a Raspberry Pi, if you feel so inclined),  there's little 
> point even trying to send SIP over the Internet.  Just have an 
> Asterisk box at each end, and then you only need a much simpler-to-configure IAX trunk between the two.
> The routers at each end then just need one port -- UDP 4569 -- 
> forwarded to the Asterisk box  (if it isn't configured as the default DMZ machine).

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