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Collect statistics of the network an example is illustrated in the table below: Parameters Value Comments ## Call Setup failures ## Dropped calls ## HO successes ## HO failures Traffic Blocking Rate (%) Traffic Blocking (Erl) Receiver level (dBm) Receiver Quality (%) After collecting the necessary information, you should fine tune signalling and radio resource sharing parameters. Network optimisation is a continuous process during and after the launch of the network. For example, if it is found that an area within a building has low signal level. There should be an immediate scrutiny of base station and/or repeater locations, heights and tilts. The problem is sorted out by moving the relevant devices and altering the tilts of these devices. Chapter: Appendix C: SME VoIP Network Planning/Optimization For buildings/halls constructed with high signal attenuation materials, deploying additional base stations will be one of the solutions. SME VoIP System Guide, Version 1.9 Proprietary and Confidential http://ArtTel.ru 110