[OpenSIPS-Users] Prevent re-INVITE to T.38

[Ovidiu Sas]

Remove the codec and let the re-INVITE go through.

Regards,
Ovidiu Sas



On Tue, Mar 11, 2014 at 1:42 PM, Jeff Pyle <jpyle at fidelityvoice.com> wrote:

> Hi Alexander,
>
> To detect the "image" session in the SDP, you are thinking the same way
> that I am.  The problem I see is how to actually reject the re-INVITE.  If
> I were to do something like a sl_send_reply("488", "Not Acceptable Here"),
> that would work in the moment, but the CSeq values would be increased by
> one on side compared to the other.  That sounds to me like a recipe for
> problems in future in-dialog transactions (like BYE).
>
>
>
> - Jeff
>
>
>
>
> On Tue, Mar 11, 2014 at 12:58 PM, Alexander Mustafin <
> mustafin.aleksandr at gmail.com> wrote:
>
>> Hi, Jeff.
>>
>> Maybe stream_exists(regexp) in sipmsgops module will be useful for you.
>>
>>  Best regards,
>> Alexander Mustafin
>> mustafin.aleksandr at gmail.com
>>
>>
>>
>>
>> 11 марта 2014 г., в 20:07, Jeff Pyle <jpyle at fidelityvoice.com>
>> написал(а):
>>
>> Hello,
>>
>> Is there anything I can do at the proxy level to prevent a dialog from
>> reinviting to to T.38?  I think I could detect the T.38 attributes easily
>> enough and respond with a 488, although I'm concerned the CSeq values would
>> be out of sequence for the next transaction that did make it through the
>> proxy to the far end.  That could cause a problem, no?
>>
>> Is this something that requires a B2BUA?  Is it possible from within the
>> OpenSIPS B2B modules to do SDP inspection of any sort?
>>
>>
>> - Jeff
>>
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