[SIPForum-discussion] Time interval between requests

[Abhisek Acharya]

Hey mustafa ,

one correction....

For example, can UAC send CANCEL of a RE-INVITE just 0.0004 sec later ?

you can not CANCEL a RE-INVITE as CANCEL is always for a unestablished call
and RE-INVITE is a mid-dialog request which means that session is already
established and one party is sending a RE-INVITE to change the media
session and if the other party is not ready to accespt that the it can
always send a 4xx error response and it will have no impact on the call.

regards
abhisek


On Wed, Sep 5, 2012 at 10:28 PM, Abhisek Acharya
<abhisek.acharya at gmail.com>wrote:

> Aside pls send me a trace
>
> abhisek
> GSLAB,PUNE
>
>
> On Wed, Sep 5, 2012 at 10:26 PM, Abhisek Acharya <
> abhisek.acharya at gmail.com> wrote:
>
>> hey Mustafa,
>>
>> few questions.
>>
>> CANCEL is always after proviisonal response.Is there a B2B involved in u
>> r picture.If UAC sending CANCEL after receiving 1xx response then the B2B
>> or the UAS MUST process the CANCEL accordingly.Timer really does not
>> matter.Please test in your lab and lemme know with your result or you can
>> send me the call trace.
>>
>> aside how can u be sure CANCEL is being not processed ?
>>
>> abhisek
>>
>>
>> On Wed, Sep 5, 2012 at 1:00 PM, mustafa aydin <mustafaydin82 at yahoo.com>wrote:
>>
>>> Hi All,
>>>
>>> Is there any time frame mentioned in RFCs which defines time interval
>>> between REQUESTS? For example, can UAC send CANCEL of a RE-INVITE just
>>> 0.0004 sec later ?  I tested some SIP servers , but none of them could
>>> handle the CANCEL properly when it comes just in such a short interval, but
>>> I  need to refer to RFCs in order to prove this wrong behaviour to
>>> vendor.
>>>
>>> Thanks,
>>> Mustafa AYDIN
>>>
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>
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