How to route a specific reply instead of triggering failure route? (Handling 422 reply)

Benoit Panizzon via sr-users <[email protected]> Tue, 10 Mar 2026 15:09:37 +0100
Newsgroups gmane.comp.voip.ser
Organization ImproWare AG
Message-ID <[email protected]>
Hi Gang

Not using the timer module.

I just stumbled over an issue when a CPE replies with 422.

I have set-up a failure route to be used when resolving the location of
a registered cpe fails or if that cpe returns an error.

I react on most cases like re-routing to voicemail etc.

But in case of a 422 I would like to send that reply back to the caller
so the call can be re-attempted with a lower session timer.

For this to work, I need to route the reply back to the origin. Using
t_send_reply() from within the failure route creates a new reply,
missing the required Min-Se header from the original reply.

Is there something like a t_route_reply()? Of would I need to extract
the Min-SE header from the reply and then append it again to the reply
generated with t_send_reply()?

Mit freundlichen Grüssen

-Benoît Panizzon-
-- 
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