vity is dimensioning, which gives the initial network configuration as a result. The first step in the planning phase is nominal planning; it provides the first site locations in the map based on input from the dimensioning phase. The process continues with more detailed coverage planning after site hunting and transmission planning. Detailed Capacity planning is also included in the planning phase. Detailed planning covers frequency, neighbour and parameter planning. After detailed planning the network is ready for verification and acceptance, which finishes the prelaunch activities. After the launch the activities continue with optimisation. Preplanning The preplanning phase covers the assignments and preparation before the actual network planning is started. As in any other business it is an advantage to be aware of the current market situation and com- petitors. The network planning criteria is agreed with the customer. As specified earlier, the requirements depend on many factors, the main criteria being the coverage and quality targets. Also several limitations exist, like the limited frequency band and the budget for the investments. The priority for the planning parameters comes from the customer. Due to the fact that the network plan can not be optimized with regard to all the parameters the priorities need to be agreed with the customer throughout the whole process. The network planning criteria is used as an input for network dimensioning. In the following are listed basic inputs for dimensioning: coverage requirements, the signal level for outdoor, in-car and indoor with the coverage probabilities; quality requirements, drop call rate, call blocking; frequency spectrum, number of channels, including information about possible needed guard bands; subscriber information, number of users and growth figures; traffic per user, busy hour value; services. The dimensioning gives a preliminary network plan as an output, which is then supplemented in coverage and parameter planning phases to create a more detai