ti-media. The basic figure comes from ITU-BDT/Planitu. Planitu is a network planning tool provided by ITU for optimization and dimensioning of telecommunications networks. The meaning of the term telecom management in the figure is broader than the abbreviated TM used in this book (which is service + network management). The use of this overview (Figure 3.20) is intended to contribute to a better overall understanding. The FP is thus used to make an overall end-to-end requirement specification for the network and then, as a second step, to distribute the requirements and functional capabil- ities to the various network parts and platforms. The chosen IETF, ITU and 3GPP (and other) standards should be indicated in the FP specifications. The language in an FP is normally supplier independent. Let us call it 'operator lan- guage'. FPs must be updated and adapted to changing conditions. When entering a new TELECOM MANAGEMENT Policy Forecast Scenario Final resources approval approval decision Detailed Network planning management Policy evaluation Service plan Strategic planning Product Target network research Boxes with Development track Fundamental Network dotted lines are Planning criteria plans planning Service modifications Forecasting e.g. QoS Price list enablers of the ITU Products document Service Land & building cost structure planning Detailed All other data network data collection pre-processing Traffic measurement External sources Figure 3.20 Fundamental (technical) plans as an input in overall network planning Networks and Technologies architecture with a common bearer for voice and data the network design principles must consequently be reviewed. The plans constitute a cornerstone for the network design plans, for procurement of equipment, system integration and other processes. 3.6.3 SPECIFIC PLANS When looking in more depth at control and traffic resources behaviour we used to find the plans shown in Figure 3.21. Dependability includes measures to maintain availability when faults have occurred. There a