[Serusers] SER is not matching ACK Messages

[Nils Ohlmeier]

Okay for some reason the ACK from the caller ATA is not matched with the 487 
from Ser.
I can not see the cause for this error. Can someone provide a Ser log with 
high debug value, for this matching problem?

Thanks
  Nils Ohlmeier

On Sunday 25 May 2003 21:52, Ricardo Villa wrote:
> Same thing happens on our network (0.8.10).  I have attached a sample ngrep
> of this.  (I dial #2001 from local ATA with IP:192.168.0.15 and hangup as
> soon as the ringing starts)
>
> SER is at IP 200.75.73.22 and remote ATA is 200.75.91.137.  After the call
> is cancelled SER keeps sending ACK messages to the remote ATA and 487s to
> the local ATA.  It has always been like this.  Not sure who is at fault
> here.
>
> Any ideas?
>
> Regards,
> Ricardo
>
>
> ----- Original Message -----
> From: "Alejandro Olchik" <aolchik at telenova.net>
> To: "List serusers" <serusers at lists.iptel.org>
> Sent: Sunday, May 25, 2003 10:24 AM
> Subject: [Serusers] SER is not matching ACK Messages
>
>
>
> I'm experiencing some strange behaviour on SER.
>
> When an enpoint sends an INVITE and after some 180 Ringing
> messages cancels the call, SER forwards the CANCEL message to the
> destination  and replies with a 200 Cancelling message.
> (this seems to be OK up to this point)
>
> 20ms after the Cancelling message was sent,  SER sends a 487
> Request cancelled message twice with 80ms of difference
> (any ide of why this is done?)
>
> From this point on, even receiving a succession of
> ACK messages SER keeps sending the 487 Request
> cancelled message as if the ACK didn't match.
>
> Any suggestion of what it can be?
> I'm using as the endpoint an ATA186, v2.15, and ser
> version 0.8.11.
>
> Best Regards,
> Alejandro
>
>
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