[Kamailio-Users] LRN routing - 302 sip code

[Mik Cheez]

Excellent . . . thanks Klaus and Iñaki.

-----Original Message-----
From: Klaus Darilion [mailto:klaus.mailinglists at pernau.at] 
Sent: Wednesday, June 24, 2009 1:47 PM
To: Mik Cheez
Cc: 'Iñaki Baz Castillo'; users at lists.kamailio.org
Subject: Re: [Kamailio-Users] LRN routing - 302 sip code

get_redirects()
http://www.kamailio.org/docs/modules/1.5.x/uac_redirect.html

regards
klaus

Mik Cheez wrote:
> It's your step 3 that has me confused; when I get the 302 am I supposed to
> reroute the call in failure route the same way I would, say, a 503 error
> code?
> 
> -----Original Message-----
> From: users-bounces at lists.kamailio.org
> [mailto:users-bounces at lists.kamailio.org] On Behalf Of Iñaki Baz Castillo
> Sent: Wednesday, June 24, 2009 1:26 PM
> To: users at lists.kamailio.org
> Subject: Re: [Kamailio-Users] LRN routing - 302 sip code
> 
> El Miércoles, 24 de Junio de 2009, Mik Cheez escribió:
>> One of our carriers gives us an option to check LRN routing via SIP
before
>> we attempt to send out a call.  Our request will go out as a regular
>> invite, then we'll get a 302 return code back, with the result contained
> in
>> the header.
>>
>> My question is, how exactly is the flow of this kind of call supposed to
>> work?  I thought I could do a regular failover, but that doesn't work. 
>> Does anyone have a suggestion?
> 
> - The proxy routes the INVITE to the carrier.
> - The carrier replies 302 with the real destination in "Contact" header.
> - The proxy does recursion for 302, extracts the URI from the "Contact"
> header 
> and generates a new branch to that URI.
>