ted to factors such as the success of the call, the drop call ratio, which should not exceed the agreed value, and the success ratio for the call setup and for handovers. Environmental factors also greatly affect network planning. The propagation of radio waves varies depending on the area morthography. The attenuation varies, for instance, when comparing rural, suburban and urban tactors and also indoor and outdoor differences caused by buildings. Most importantly, the frequency range has an impact on propagation. The topography of the planned area, the location of cities, roads and other hotspots are obviously factors having an impact on planning. As the frequency band is a limited resource the available bandwidth partly determines the tactics for network planning. All previously mentioned factors - data based on market analysis, operator requirements, environ- mental factors and other boundary conditions - help to define planning parameters and frames for the network plan. Due to various design parameters the network planning process requires optimisation and compromises in order to end up with a functional cellular network. The network planning target is to build as high a quality network as possible. On the other hand, there is the cost-efficiency - how much money the operator can spend for the investments SO that the business is financially profitable. The two factors - network quality and investments - are connected to profit. To simplify, the better the end users can be served and the more traffic the network can handle, the more impact there is on the profits. This explains the complexity of network planning, where sufficient cellular network coverage and capacity need to be created with as low investments as possible. A summary of the main factors affecting network planning are listed below: Radio Network Planning and Optimisation PRE-PLANNING PLANNING DETAILED PLANNING VERIFICATION OPTIMISATION & ACCEPTANCE Dimensioning Coverage planning Frequency planning Capacity planning Neighbour planning Site surv