ITU-T Rec. E.506 – FORECASTING INTERNATIONAL TRAFFIC
1 Introduction
2 Base data for forecasting
3 Composite strategy - Conversion method
4 Procedures for traffic matrix forecasting
    4.1 Introduction
    4.2 Direct point-to-point forecasts
    4.3 Kruithof's method
    4.4 Extension of Kruithof's method
    4.5 Weighted least squares method
5 Top down and bottom up methods
    5.1 Choice of model
    5.2 Bottom up method
    5.3 Top down procedure
6 Forecasting methods when observations are missing
    6.1 Introduction
    6.2 Adjustment procedure based on comparable observations
    6.3 Modification of forecasting models
ANNEX A – Composite strategy
    A.1 Introduction
    A.2 Basic procedure
ANNEX B – Example using weighted least squares method
    B.1 Telex data
    B.2 Forecasting
    B.3 Adjustment of the traffic matrix forecasts
ANNEX C – Description of a top down procedure
ANNEX D – Example of a top down modelling method
    D.1 Econometric model of the total traffic from Norway to Europe
    D.2 Model for breakdown of the total traffic from Norway to Europe
    D.3 Econometric model for telephone traffic from Norway to Central and South America, Africa, Asia, and Oceania.
References