Re: [Sipwitch-devel] SIPWitch destination router

[David Sugar]

Destination routing means basically you submit a destination uri to 
sipwitch to connect to in an invite, and it resolves and sends the 
invite to the destination.  The destination can be a local user agent 
registered through the current sipwitch instance, a gateway, a remote 
sip server, etc.  Sipwitch just offers connection to a destination, it 
does not do ivr or other kinds of call processing.

Sipwitch cares only about a few things.  If you claim your "from" uri is 
assocated with the sipwitch instance, it will ask you to prove you are 
who you claim through sip authentication.  If your a non-local 
(non-authenticated) user, and the destination is not a local sipwitch 
endpoint, it will not let you call through it.

Sipwitch is also a forking server, in that if the destination uri can be 
interpreted as multiple sip destinations or endpoints, it will create an 
invite for each possible destination, and then connect you to the first 
one that actually answers.

Connected single domain calling is a special case.  This is where you 
have a series of sipwitch nodes all acting as a single switch for a 
single uri.  In that case sipwitch keeps track of which instance the 
user assocated with the domain is logged into/registered with.  Right 
now it does it primarily by partitioning the numeric dialing plan, 
though later shared multicast registry operations will be added.

On 04/05/2013 10:14 AM, liang wrote:
> Mr Sugar:
>
>     From GNU Free Call Announcement, i learned that sip witch is a
> destination router for sip protocol, and Free Call support publishing of
> routes to connected peers which builds upon the already routing foundation
> in sip witch itself. My questions are that :
>
> 1.       What is the *destination router* in sip witch ,and how to use it?
> Could you please give the XML configuration.
>
> 2.       What is the meaning of *publishing of routes to connected
> peers*through the routing foundation of sip witch?
>
> I am looking forward to you replay! Thank you!

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