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

[Corey Edwards]

On 01/30/2013 07:36 AM, Alex Balashov wrote:
> 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.

You're 100% correct, but I've also run into carriers that do it. Trying
to convince them to change has so far been as effective as talking to a
brick wall.

Corey