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(ASCEND) Re: ascend-users-digest V96 #749

Hi Thomas,
> No, it's different. 
> 
> The Max calls the Pipeline, the Pipeline "sees" the CLID and _rejects_ the 
> call. The Pipeline then calls the Max.

This is EXACTLY what it is supposed to be. The reality is the 
following: the Pipe50 sends not a "reject" but a "normal clearing" 
cause code. Other cause codes like "bearer service not available" are 
returned by the switch immediately so the problem lies within the 
normal call clearing.

We have checked that with the Telekom's ISDN analyzer (I 
think it were various firmware versions 4.6CP9, I11 etc. and 5.0a) 
in November 96/April97. Furthermore, the cause code has to be mapped 
to EDSS1 if one side has 1TR6 which causes additional problems. 


> The problem here: The reject is hold by the german telekom for up to 40 
> seconds.

Not the reject but the normal clearing. You can verify that with 
an ISDN Card and software which is able to send a real reject or 
another cause code. Then the Max get's the response within a few 
(1-3) seconds. Still a delay parameter for the Pipe50 would make 
sense. 

 
> It calls the Pipeline and therefore has an open session to the P50. The call 
> from the p50 comes in before the reject. Because of that the incoming call is 
> not okay for the max, because there's already an open session to this 
> destination.
> 
> A possible solution might be, that the max drops the outgoing call if it sees 
> an incoming session to the same destination and Expect-Callback is on.

see my previous message for the workaround.

Greetings from the wild south :-)

Torsten Droste
 

----------------------------------------------------------
Torsten Droste                      td@pop-stuttgart.net
Internet PoP Stuttgart IPF.NET      phone: +49 711 6574500
INC InterNet Connectivity GmbH      fax:   +49 711 6574501
Schenkendorfstr. 17                 70193 Stuttgart
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