[SIPForum-discussion] Transaction in Call Hold & Call UnHold - SIP

Abhishek Gupta gupta.kumar.abhishek at gmail.com
Sat Jun 26 12:44:42 UTC 2010


There are total 7 transactions in this call flow.

 First INVITE with it's 200 OK is the first Transaction , while ACK is the
second , as per 3261 which  says that ACK for 2xx to INVITE request is a
different transaction.

Similarly, for hold and unhold it's again 4 (2+2) transactions.

Finally, BYE is an another trans.

Thus, making it a total 7.

But there is only 1 dialouge


Abhishekl Kumar  Gupta

On 6/26/10, Sumeetkumar Bhardwaj <sumeet_bhardwaj at persistent.co.in> wrote:
> Hello,
> I think there are 14 transactions in this call hold- unhold SIP call flows.
> Proxy will create the new transaction for incoming INVITE request and send
> it to Bob. Re-Invite will create the new transaction but modify the ongoing
> dialog.
> Thanks,
> Sumeet
> ________________________________________
> From: discussion-bounces at sipforum.org [discussion-bounces at sipforum.org] On
> Behalf Of SIP Babie [sipbabie at gmail.com]
> Sent: Friday, June 25, 2010 5:07 PM
> To: discussion at sipforum.org
> Subject: [SIPForum-discussion] Transaction in Call Hold & Call UnHold - SIP
> Hi All,
> Please help me to find the number of transactions in attached Call Hold-
> Call Unhold SIP call flow.
> Regards,
> sipbabie
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