On Wed, Dec 8, 2010 at 10:22 AM, mayamatakeshi <mayamatake...@gmail.com>wrote:
>
> On Wed, Dec 8, 2010 at 12:38 AM, tran quoc tuan <tuant...@gmail.com>wrote:
>
>> Hi all,
>> I have tested SIPp client to connect IMS, But im my scenario, it has
>> worked but client and server continue to transfer messages 200 OK SDP and
>> ACK.
>> I don't find the reason .
>>
>
> Probably the ACK your scenario is generating doesn't match the transaction
> initiated by the INVITE.
> Get a packet capture and show INVITE and ACK messages.
>
One thing that I can see it might be a problem is that you are using this
when generating the ACK:
CSeq: [cseq] ACK
I am not sure, but I suspect [cseq] increments a counter each time it is
referenced.
But the CSeq number in the ACK must be the same as in the INVITE.
So if you have
CSeq: 1 INVITE
then you must have:
CSeq: 1 ACK
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