[SR-Users] How to rewrite "tu" in CANCEL message ?

Vitaliy Aleksandrov vitalik.voip at gmail.com
Fri Feb 1 10:15:35 CET 2013


I had the same problem with CANCEL requests for transactions created by
an INVITE that was rewritten in a branch_route.
I sent a small patch to dev list in October and didn't receive any
comment. You can try to find it in sr-dev archive for October 2012.

> Yes, we know it's wrong.
> But if we really need it, is there a way to do it?
>
>
> -----Original Message-----
> From: sr-users-bounces at lists.sip-router.org
> [mailto:sr-users-bounces at lists.sip-router.org] On Behalf Of Alex Balashov
> Sent: Wednesday, January 30, 2013 4:36 PM
> To: sr-users at lists.sip-router.org
> Subject: Re: [SR-Users] How to rewrite "tu" in CANCEL message ?
>
> On 01/30/2013 09:31 AM, Julia wrote:
>> We need some number manipulation for outgoing calls to PSTN GW.
>> The same manipulations must be in "ru" and "tu", because our PSTN GW adds
>> redirection when tu ≠ ru.
>> When we used INVITE re-parsing for CANCEL, modified "tu" is not included.
> I would say your PSTN GW is doing it wrong.  No routing should ever be
> done on To.  It is a purely cosmetic commentary on the intended logical
> destination of the call.  Only the RURI should be used for that.
>




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