Cool, SIPp, IMS and IPv6 ;)

Hmm, my guess is, that the ACK is not recognized correctly by the
IMS-core-logic and the dead-call messages are retransmissions.

As first debugging step, I propose to add a <pause> of a few seconds at
the end of the UAC-scenario. Then, you will see, if there are any
retransmissions arriving after sending the ACK-request.

br
Michael

WANG Jin jia Jw wrote:
> To Whom It May Concern:
> 
>  
> 
> I am running SIPp v3.1-TLS. Following figure is my scenarios (call
> forwarding). We have IMS core and a sip application deployed.
> 
> As you see, there are many successful dead call in UAC part.
> 
> Is that normal? How to avoid such error? Would you please help to
> analyze this?
> 
> I am attaching the UAC and UAS scripts and scenarios for you.
> 
>  
> 
> Thanks a lot for your help!
> 
> Jinjia
> 
>  
> 
>  
> 
> 
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