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

[Martin Joseph]

On Feb 28, 2006, at 9:51 PM, Andres wrote:

> 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.
>
I like Andres theory also...  NAT is confusing port 5060, so set each  
phone to use a different port...