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

[Greg Oliver]

On Feb 2, 2008, at 3:43 PM, john at quonix.net wrote:

> Greg,
>
> Without STUN how are the phones able to register? I was unable to  
> get the
> Grandstream phones to work at all without STUN.
>
> -John
>

I have nat on in sip.conf and off on the phones.  Works perfect for  
7960/1 and 7971.  When I get back home, I will login to the asterisk  
servers and tell you what IPs the registration requests have in them.
> ----------------------------------------------------
> From : Greg Oliver <greg.oliver at cistera.com>
> To : Asterisk Users Mailing List - Non-Commercial Discussion
> <asterisk-users at lists.digium.com>
> Subject : Re: [asterisk-users] Multiple SIP phones behind a Linksys
> firewall
> Date : Sat, 2 Feb 2008 15:15:34 -0600
>>
>>
>> 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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