[SIPForum-discussion] when to send the frist INVITE?

[Raghul Prasanna]

Hi Nora,
 
 chk this link http://www.tech-invite.com/RFCs/PDF/RFC3578.pdf, 
 
  this has the scenario you have described..
 
Thanks,
Raghul
--- On Sat, 21/6/08, гъ ГТ <chen.yu26 at yahoo.com.cn> wrote:

From: гъ ГТ <chen.yu26 at yahoo.com.cn>
Subject: [SIPForum-discussion] when to send the frist INVITE?
To: "SIP group" <discussion at sipforum.org>
Date: Saturday, 21 June, 2008, 3:45 AM



Hello,all ,
I met a puzzle when handle the SIP-I Msg. 
 
Procondition: 
 A initial call from ISUP to SIP and  before it arrived the Gateway(GW), the  called  numbers is carried by IAM and SAMs.
 
Questions: 
1. In practice, When did the GW send the first INVITE? 
2. Is it possible to send subsequence INVITEs once the GW received the SAM ?
              
I have check out a number of RFC and ITU standards, but not sure the situation in practical telecom network. Thanks in advance
 
Regard
 
Nora
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