roblems are due to true radio problems: Neighbour list generation Hardware configuration audit Radio parameter audit Fault management Neighbour List Generation The initial neighbour lists can be defined based on geographical proximity and antenna direction. Also as an initial step all intrasite cells should have the neighbour relation defined. The neighbour definition should include cells that are first-tier neighbours, as the cells should not provide coverage beyond the first-tier neighbours. Hardware Configuration Audit Hardware configuration audit checks on the correct configuration settings for MHA gain and cable loss can be done by using cell availability statistics and analysing the BTS commissioning file. A small number of sites can also be selected as a sample to perform site visits to find out if planned tilts and antenna directions have been implemented correctly. The potential candidate for site visits is the cluster on the most important service area. An indication of incorrect settings can be evaluated from PrxNoise statistics or real time values using online monitoring. The uplink noise measurements are signalled to the UE in system information block 7 and used for an initial transmit power calculation of RACH preamble and DPCH initial transmit power calculation. Incorrect noise measurement has two effects on RACH procedure: 1. Too high PrxTotal. Too high initial transmit power for preamble and RACH message which causes uplink interference rise. 2. Too low PrxTotal. Too low initial transmit power which requires multiple preambles to be transmitted and in the worse case prevents the WBTS from detecting the RACH preamble due to too low transmit power. Radio Network Optimisation Too low/high PrxTotal would cause too low/high initial power on the UL DPCH transmission and increase the UL power control loop settling time. Extreme values (+20 dB) can also prevent the UL synchronisation and thus cause connection setup failure. If correct cable loss values are not available, a default of 3 dB should enable n