Samsung DECT 500, Installation And Programming Manual

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Part 1: Site Survey and Overview of DECT Systems
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A maximum of three Base Stations can be placed next to each other. Any more will
interrupt each other and interfere with the whole system. If there is a need for a fourth
Base Station, this must be placed at least 25 metres away.
Final Testing
The 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) of
different 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 by
means of the test display on a handset. It will be necessary to move between the
coverage areas of the different Base Stations to determine whether a handset can
“see” the different cells.
Traffic Measurement
When the cells and radio coverage are in place, the traffic must be calculated for
each cell (Figure 1.3).
Map out where handset users are typically concentrated and calculate how many
Base Stations will be required for each cell. The flowchart in
Appendix 1 can be used
as a guide. In Appendix 2 , some general calculations have already been made which
can 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 handset
makes three calls per hour and each call lasts three minutes?
Figure 1.3