Thanks. Should a proxy server also do this action (i.e. Terminate the 
INVITE if the CANCEL times out?).

Ranga
Jeroen van Bemmel wrote:

> Yes, also because older UAS won't send 487 response for INVITE anyway, 
> so the UAC needs to handle this case
>
> Regards,
> Jeroen
>
> M. Rangnathan wrote:
>
>> I have the following scenario:
>>
>> UAC sends out INVITE
>>        UAS responds with RINGING
>> UAC sends out CANCEL
>>        UAS does not repsond to CANCEL  (for example, it dies).
>> UAC cancel transaction Times Out.
>>
>> Question -- should the UAC also delete the INVITE Client Transaction
>> that it was originally trying to CANCEL ?   ( I think the answer is
>> "yes" but I want to be sure. )
>>
>> Thanks
>>
>> Ranga 
>
>
>


-- 
M. Ranganathan 

Advanced Networking Technologies Division,
National Institute of Standards and Technology (NIST),
100 Bureau Drive, Stop 8920, Gaithersburg, MD 20899. 
tel:301 975 3664 , fax:301 590 0932 http://w3.antd.nist.gov/
Advanced Networking Technologies For the People!  


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