ITU E.508:1992
ITU E.508:1992 Forecasting New Telecommunication Services
Table of Contents
1Introduction2Newserviceclassification
2.1General
2.2Enhancedservicesofferedovertheexistingnetwork
2.3Novelservices
3Forecastingparameters
3.1Measurementofenhancedservices
3.2Novelservices
4Independentforecastingmethods
4.1General
4.2Marketresearch
4.3Expertmethods
4.4Sectorialeconometrics
5Combiningforecasts
5.1General
5.2Aggregationapproach
5.3Structuredapproach
5.4Procedure
6Forecasttestsandadjustments
6.1General
6.2Marketresearchbasedanalysis
6.3Applicationbasedanalysis
6.4Generalevaluationmethods
ANNEXA-Penetrationfunctions(growthcurves)
A.1Logisticcurve
A.2Gompertzcurve
A.3Gausscurve
ANNEXB-Exampleofforecastingusingasectoralrule
B.1Demandprofilefortheretailsector
B.2Contentoftelecommunicationsservices
B.3DemandforISDN:Threephasesofdiffusion
B.4Forecastingthedemand
References