[SIPForum-discussion] reliable 1xx

[sreekant nair]

Hi Anthony, 

I believe if you support the 100Rel Tag, then you need to PRACK the 18x irrespective of whether it contained an SDP or not. 

However, if there was no SDP, I think the UAS(or proxy) could still send the 2XX and not wait for the PRACK. (Need to confirm this from the RFC)

Cheers
Sreekant 

----- Original Message ----
From: Anthony Orlando <avorlando at yahoo.com>
To: discussion at sipforum.org
Sent: Thursday, December 6, 2007 4:39:55 AM
Subject: [SIPForum-discussion] reliable 1xx


Gurus,
  I have a question regarding PRACKing of a
provisional response.  My understanding has always
been that you would only PRACK a 18x if it contains
SDP.  The reason is  you want to ensure reliable
delivery of the SDP.  Otherwise the 18x is not
critical.  

Please feel free to comment and correct me if I am
wrong.  Also is there a difference between 3gpp and
IETF on this subject?  I am in an IMS environment.


    
  ____________________________________________________________________________________
Never miss a thing.  Make Yahoo your home page. 
http://www.yahoo.com/r/hs
_______________________________________________
This is the SIP Forum discussion mailing list
TO UNSUBSCRIBE, or edit your delivery options, please visit
 http://sipforum.org/mailman/listinfo/discussion
Post to the list at discussion at sipforum.org






      ____________________________________________________________________________________
Be a better friend, newshound, and 
know-it-all with Yahoo! Mobile.  Try it now.  http://mobile.yahoo.com/;_ylt=Ahu06i62sR8HDtDypao8Wcj9tAcJ 
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://sipforum.org/pipermail/discussion/attachments/20071206/050105c1/attachment-0002.html>