Re: Real and Non-Real Time Traffic (was [WG-PIC:352] Re: FMM demo notes)

[Christine Moe <>]

Ben,

At 10:25 PM 10/22/2003 -0400, Ben Teitelbaum wrote:
> Does anyone have busy-hour call volume figures from a campus voice
> switch they could share?  With a few datapoints, I'd do this
> back-of-the-envelope analysis.

Busy hour traffic usually runs 15% of the full daily traffic.  I have been 
measuring Stanford's traffic for years and it holds true.  Stanford runs 
about 70,000 call attempts during busy hour (remember we are at 37,000 
lines) with an average holding time of between 2 and 3 CCS.  We have three 
distinct traffic patterns from three distinct groups:  Hospitals, Campus, 
and Students.   We still have a lot of student traffic, although we too are 
experiencing a drop in student volume due to cell usage.  Another 
consistent theme is that the hospital voice traffic shows many more short 
duration calls with holding times usually around 1 CCS.  Campus traffic is 
the 2-3 CCS with fewer originates/terminates.  Student traffic even fewer 
originates/terminates but much longer holding times, 4-5 CCS per station. 
Most of our student traffic comes in the evening hours and the evening peak 
is not as high as the daytime peak.  This is a great mix from a traffic 
engineering point of view and makes for efficient utilization of the resources.

Hope this helps.
                        Christine Moe.





==================================
Christine Moe
ITSS, Communication and Networking Services
275 Panama Street, Forsythe 180
Stanford University
Stanford, CA  94305-4140
Phone:  650.723.4922
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