[asterisk-users] Remote VOIP/SIP Phones through two routers

[John Ervin]

So, assuming your Asterisk box is behind one firewall (Linksys/Tomato 
Software) and your Wireless SIP phone is behind another firewall 
(SonicWall 1260 Enhanced).  Is there anything special that I have to do 
to the firewalls.  I do have the Asterisk firewall configured to work 
(ports 5060 & 10001-20000).  But I'm not sure about the other end.  Do I 
need STUN at the SIP Phone end?  Do I need to make sure that any 
particular ports are open.  Anybody have specific experience with 
setting a SonicWall up so that local SIP phones will work.

The Specific phone is a D-Link DPH-540 (WiFi).  But it would be nice to 
allow more standard SIP phones like the SPA942 etc.

Thanks...

-- 
John F. Ervin
Central Florida TeleSource
http://jervin.com/cft
jervin at jervin.com