[SIPForum-discussion] Reliable Provisionable Response to the Re-Invite.

[alexzhang at gdnt.com.cn]

Thanks,
 
So the conclusion is that the re-invite can generate the reliable
provisionable response from the UAS, just like the initial invite. 
 

Alex Zhang 
ESN: 6-554-8782 

 

________________________________

From: sreekant nair [mailto:sreekant_nair at yahoo.com] 
Sent: Thursday, January 03, 2008 11:10 PM
To: Alex Zhang (GDNTRND); discussion at sipforum.org
Subject: Re: [SIPForum-discussion] Reliable Provisionable Response to
the Re-Invite.


Hi Alex, 

If you mean " Can a Re-Invite generate a 18X response from the UAS?",
here is what I found in RFC 3261[sec 14.1 pg 86]

Unlike an INVITE, which can fork, a re-INVITE will never fork, and
   therefore, only ever generate a single final response.  The reason a
   re-INVITE will never fork is that the Request-URI identifies the
   target as the UA instance it established the dialog with, rather than
   identifying an address-of-record for the user.
Sec 14.2 pg 88

   A UAS MAY choose not to generate 180 (Ringing) responses for a re-
   INVITE because UACs do not typically render this information to the
   user.  For the same reason, UASs MAY choose not to use an Alert-Info
  
 header field or a body with Content-Disposition "alert" in responses
   to a re-INVITE.
Hope that answers your question or at least gives you a pointer in the
direction you want to go\

Cheers
Sreekant



----- Original Message ----
From: "alexzhang at gdnt.com.cn" <alexzhang at gdnt.com.cn>
To: discussion at sipforum.org
Sent: Thursday, January 3, 2008 2:52:49 AM
Subject: [SIPForum-discussion] Reliable Provisionable Response to the
Re-Invite.


Hi All,
 
Can a reliable provisionable response be generated for the Re-invite
message?
Thanks.
 

Alex Zhang
Guangdong Nortel (GDNT) R&D Center
GSM/UMTS Voice Core - MSC Design  
Phone: (PSTN)+86 020 89188782 (ESN)6 554 8782 
E-mail: alexzhang at gdnt.com.cn <mailto:alexzhang at gdnt.com.cn>  YahooIM:
zcc_nuaa


 


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