[OpenSIPS-Users] LRN dips with Dynamic Routing

Bogdan-Andrei Iancu bogdan at opensips.org
Tue Nov 22 15:27:23 CET 2011

Hi Kpirlo,

When sending the call to the dip provider, use a failure route in order 
to catch the 3xx reply you get back. In the failure route, use the 
uac_redirect module with the get_redirects() function 
in order to extract the redirect contacts from the reply and push them 
as new destinations.


On 11/20/2011 08:04 PM, Kpirlo wrote:
> We are currently using the Dynamic routing module for our least cost 
> routing.
> Now we are looking at implementing an LRN dipping service, where we 
> will send the call to a dip provider first and receive a 302 redirect 
> back which will have the LRN returned in the contact header as "rn=" 
> if the number has been ported or will include ";npdi"  in the contact 
> header if it has not been ported.
> Im asking for any advice anyone has on how to implement this and how 
> it could work with dymanic routing to choose the route based on rn if 
> available, but actually send the call using the original "to" number.
> Thank you in advance for any help.
> Kent
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Bogdan-Andrei Iancu
OpenSIPS solutions and "know-how"

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