[Asterisk-Users] A room full of Cisco 7960s behind NAT

[Andres]

Ed Greenberg wrote:

> I need to set up an office full of Cisco 7960 phones behind NAT with 
> the server out in Colo.
>
> The first test phone registers fine, but the second one does not 
> register.
>
>
>
> The first phone's registration looks like so:
> /SIP/Registry/3115552368
>     :64.169.xx.yyy:38836:3600:3115552368:sip:3115552368 at 64.169.xx.yyy:5060 
>
>
> When the second phone tries to register, it gets back a 404 not found. 
> Not a 401, Authentication Required.
>
> The error in the full log is:Feb 28 14:26:27 NOTICE[4888] chan_sip.c: 
> Registration from 'sip:8115552368 at ev01b.networkpts.com' failed
> for '64.169.xx.yyy' - Username/auth name mismatch
>
> What's the right way to do this. Shown below are my configuration files:

Maybe you should change the source port of all phones so that they are 
not all listening on 5060.  This should be handled automatically by your 
NAT device but sometimes they are broken and you need to simplify things 
for them.

-- 
Andres
Technical Support
http://www.telesip.net