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INTERNATIONAL TELECOMMUNICATION UNION
ITU-T RECOMMENDATION SUMMARY
Rec. No. : E.500
Title : Traffic intensity measurement principles
Study Group : II - Network Operation
Version : Revised
Date of adoption : 1992
Notes :
Traffic measurements provide the data base from which the planning,
operation, management and, in some cases, accounting for transit
considerations of the telephone network are carried out. Different
applications may exist for the same traffic measurement.
Recommendation E.500 gives the principles for measuring carried
traffic and bids on circuit groups and exchanges.
Circuit group dimensioning is based on a congestion objective, on the
traffic intensity values at high traffic load time and on the forecast
value of the intensity until the next augmentation of circuits.
Intensity is measured during a daily busy hour and averaged over a
number of days, to avoid exceptional values.
If the grade of service depends strongly on other factors than mean
intensity during busy hour (as in e.g. a multislot network), then a
new traffic reference period should be defined. This is for further
study.
If traffic measurements are taken every day of the year (yearly
continuous measurements), the required averages can be calculated
directly. If traffic measurements are taken only during a limited
number of days in the year (yearly non-continuous measurements), the
equivalent traffic loads may be estimated. Recommendation E.500
describes the corresponding procedures.
To order the complete text of this Recommendation, please use the
Order Form for ITU-T Recommendations. An electronic version of this
form is available on ITUDOC (Winword: UPI=ITU-5265; ASCII: UPI=ITU-2488).