Samsung DECT 500 Installation And Programming Manual

Contents

Part 1: Site Survey and Overview of DECT Systems14A maximum of three Base Stations can be placed next to each other. Any more willinterrupt each other and interfere with the whole system. If there is a need for a fourthBase Station, this must be placed at least 25 metres away.Final TestingThe overall performance of the system can only be fully evaluated after the installa-tion has been completed. If is necessary to move between coverage areas (cells) ofdifferent Base Stations to conclude if the handover between Base Stations is possi-ble. At the same time, Base Station synchronisation can be tested. This is done bymeans of the test display on a handset. It will be necessary to move between thecoverage areas of the different Base Stations to determine whether a handset can“see” the different cells.Traffic MeasurementWhen the cells and radio coverage are in place, the traffic must be calculated foreach cell (Figure 1.3).Map out where handset users are typically concentrated and calculate how manyBase Stations will be required for each cell. The flowchart in Appendix 1 can be usedas a guide. In Appendix 2, some general calculations have already been made whichcan also be used as a guide.Example: How many Base Stations must be installed in a cell with 40 handsets, as-suming that 1% of the time users won’t be able to make a call and each handsetmakes three calls per hour and each call lasts three minutes?Figure 1.3