[VoIP] I am now online!

[Steph Kerman]

Hmmm....  interesting.  Thanks.

My question in part comes out of wondering how wi-fi phones can work 
reliably when one walks within range of some random wi-fi hotspot that 
the phone owner has no control over and which won't necessarily have 
port forwarding enabled for special ports that might be required for 
Voip service.

Steph

Chad Perkins wrote:
> Yes and no.  If you have your Asterisk system "register" with another gateway/server 
> the registration process takes care of the port forwarding and "keep alive", but that 
> means a central server.  That's not how CNET is setup; in CNET we use ENUM to 
> find each other and the tandems are all "peers" without a central server.  No central 
> server, no central point of failure.
>
> Now I used to "register" a second non-CNET Asterisk (off-site) with my main one.  I 
> did it for other reasons, but it would accomplish what you suggest albeit with some 
> additional complication and an additional trip across the Internet for the voice stream 
> (this is essentially the same configuration as the ATA method except the terminal 
> device is another Asterisk).
>
> Chad
>
> On 23 Feb 2008 at 11:57, Steph Kerman wrote:
>   
>> Is there some way to add something to the * code or config files to
>> keep the connection alive by placing dummy test calls once per minute?
>> =SK=
>>     
>
>