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Page 8 - Site Surveys
Site Surveys
Introduction
Page 8
Introduction
The site survey is the most crucial part of any DECT installation. It
is the stage at which future success or failure of the installation will
probably occur.
Most issues of customer satisfaction will stem from the site survey
and the resultant positioning of the base stations.
From the customer's point of view, two keys factors must be assessed:
–
The area of coverage required:
–
The number of simultaneous users within different areas:
Each base station can support 4 simultaneous calls. There is no
problem with having more than one base station in the same area (see
Base Station Coverage: In Practice on page 10).
During the site survey, you will be attempting to determine two factors to
achieve the customers requirements:
–
The number of base stations required.
–
Their best positioning.
To fulfill this you need to obtain the following details:
–
Building Measurements:
Accurate building plans are an essential aid to both the site survey and
also for later fault analysis.
–
Signal Strength: (RSSI - Radio Signal Strength Indication)
From potential base station positions, what is the range of the base
station signal at sufficient signal strength for reliable operation.
–
Speech Quality: (Q52)
Interference, weak signals and reflected signals lead to errors in the
digital voice signal that cannot be corrected. From potential base
station position, what is the range before the bit error rate becomes
unacceptable.
DECT - Installation Manual
38HBKD0001SAH – Issue 14 (27th October 2003)
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