RE: Q931 Setup authorization and Neighbor GK

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I think you've really hit the nail on the head.  Back in the late nineties/
early 00's I worked with a lot of carriers to carry bulk international traffic.
My experience is that there will always be at least two applications for two
different flavors if this similar data.  The measure Michal predominately talks
about is hard and well defined, and is invaluable for troubleshooting and
diagnostic purposes, so you can find out where the subjective delay is coming
from.  However, in evaluating your network, you will ultimately have some guy
with a stopwatch pressing the last DTMF digit on his office phone and measuring
the time until ringing starts.  If there is any way to get an indication of
both, that would be ideal.

Thanks,
--------------------------------
anw


-----Original Message-----
From: Zygmuntowicz Michal [mailto:m.zygmuntowicz@onet.pl]
Sent: Wednesday, October 01, 2003 9:42 AM
To: openh323gk-users@lists.sourceforge.net
Subject: Re:  Q931 Setup authorization and Neighbor GK


I would agree with you. Maybe this is a good point to figure out
two or three useful PDD measures and then we could think about
what data they need and what accuracy is required.

----- Original Message ----- 
From: "Vance Shipley" <vances@motivity.ca>
Sent: Wednesday, October 01, 2003 3:15 PM


> The call doesn't start until a SETUP is sent.  An ARQ is an "admission
> request" which is just that.  It establishes the caller's intention
> and the response from the GK, possibly after interacting with other GKs
> by way of LRQ, tells the endpoint if and how to complete the call.
> 
> The measurement of post dial delay (PDD) is subjective.  If I'm 
> evaluating a route for termination of voice traffic I will consider the
> time between my SETUP being sent and the audible ring back being heard.
> This measures their performance for call setup.  If the route uses 
> gatekeepers we can consider seperately the transaction processesing time.
> When a customer is evaluating our PDD this transaction time will be part 
> of the PDD from their perspective.  



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