[SR-Users] Topoh hiding prefixes

[Efelin Novak]

I just want to know whether installing of the TOPOH modul would
somehow affect users of my proxy?

When the UAC creates (at least blink does so and few hardware phones I
have) the seq. request, it places a received contact from 200OK
(INVITE transaction) into a Request URI of the seq.request.

So when the UAC replies back with the ACK its Request URI is "hidden
contact URI from 200OK". As the TOPOH module do not translates this
ACK Request URI back, it is being sent to UAS unchanged (hidden
contact of UAS).

It works actually in the testing topology. Are there any clients that
should have a problem with this? Is this behavior described in some
RFC?

Thanks

Efelin

2012/2/17 Alex Balashov <abalashov at evaristesys.com>:
> On 02/17/2012 11:30 AM, Efelin Novak wrote:
>
>> But the contact from the UAS is hidden to the UAC. So the UAS have to
>> put a "hidden" contact to the R-URI. Should the TOPOH module also
>> "fallback" the request uri? I dont think so. So the client has to
>> receive ACK with a different r-uri that the contact he sent in 200OK.
>
>
> I am unable to understand this statement.
>
> However, the client does not receive ACKs.
>
>
> --
> Alex Balashov - Principal
> Evariste Systems LLC
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>
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