Please read
http://www.ietf.org/id/draft-ietf-sipping-sip-offeranswer-18.txt, and
try to understand it before asking more questions like this.
I gave you this reference earlier. I'm pretty certain that all the
questions you have asked are dealt with there.
Thanks,
Paul
On 6/29/2011 4:25 AM, Nauman Sulaiman wrote:
> Thank you. However can you confirn no more OA cycles can take place
> using the 18x and PRRACK response after the first one
>
> --- On Wed, 29/6/11, Kumar Verma, Sunil (Sunil)<skve...@avaya.com> wrote:
>
>> From: Kumar Verma, Sunil (Sunil)<skve...@avaya.com>
>> Subject: RE: [Sip-implementors] 18x response after OA complete?
>> To: nauman762-h...@yahoo.co.uk, sip-implementors@lists.cs.columbia.edu
>> Date: Wednesday, 29 June, 2011, 7:43
>> Yes, it is allowed.
>> If you see proxy and other entity, they need 18x response
>> to retain the
>> transaction(Timer C).
>>
>> Regards
>> Sunil Verma
>>
>> -----Original Message-----
>> From: sip-implementors-boun...@lists.cs.columbia.edu
>> [mailto:sip-implementors-boun...@lists.cs.columbia.edu]
>> On Behalf Of
>> Nauman Sulaiman
>> Sent: Wednesday, June 29, 2011 4:16 AM
>> To: sip-implementors@lists.cs.columbia.edu
>> Subject: [Sip-implementors] 18x response after OA
>> complete?
>>
>> Hi,
>>
>> After OA is complete is it possible for UAS to send more
>> 18x responses
>> (with no offer or answer of course).
>>
>> UAC
>> UAS
>> |----INVITE------>|
>> |
>> |
>> |<----1xx (o)-----| -
>> provisional responses with REQUIRE 100rel
>> |
>> |
>> |-----PRACK(a)--->| -
>> send PRACK with answer
>> |<----
>> 2xx--------|
>> |
>> |
>> |
>> |
>> |
>> |<----18x --------| - is
>> this 18x allowed even though OA
>> complete?
>> |
>> |
>> |-----PRACK------>|
>> |<----2xx---------|
>>
>> 200OK
>>
>> <-----------------
>> ------------------>
>> ACK
>>
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>> Sip-implementors@lists.cs.columbia.edu
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>>
>
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