[asterisk-users] Multiple SIP phones behind a Linksys firewall

[Greg Oliver]

On Feb 2, 2008, at 2:11 PM, John Von Essen <john at quonix.net> wrote:

> I posted an email a few days regarding a problem with hearing the
> voicemail greeting on my sip phones.
>
> It turns out to be a phone/stun/linksys issue - not an asterisk issue.
> Which brings up a couple of questions....
>
> I always assumed that you can have multiple SIP phones behind a  
> Linksys
> firewall/router (WRT54G) all using the same STUN server/port.
>
> But apparently thats not the case. Is it a Linksys bug, a  
> Grandstream bug
> in the BudgeTone-100 phone, or am I off base and just doing something
> wrong?
>
> I cleary have problems as soon as I try to use a second phone behind  
> the
> Linksys - registration issues, cant hear voicemail greeting, etc.,.
>
> My next test was to run multiple STUN servers on the same machine with
> different ports. Then, for my multiple SIP phones behind the  
> Linksys, have
> each phone use a different stun port.
>
> Any thoughts?
>
> John

I have 3 phones connected to 2 servers behind a 54g running openwrt  
with no stun or any special configuration. I am running cisco phones  
which do nat well natively.

-greg
>
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