User's Manual

the critical point. Listen to the deployment tool handset while moving
away from the basestation. When the RSSI value changes from 7 to 6,
the cell boundary has been detected.
d.
Mark the cell boundary on the floor plan with a small x.
e. Repeat step c and step d until there are enough Xs to draw a thin contour
arc through the Xs.
In
Figure 32: Cell contour of the initial critical point on page 67, P1 is the initial critical
point.
3.
Demarcate the cell contour of the closest adjacent critical point to the first critical
point.
See step
2 on page 91 for details. In Figure 33: Cell contour of the closest adjacent
critical point to the initial critical point on page 68, P2 is the closest adjacent critical
point to the first critical point.
4. Use the cell contours to locate a cell centre.
Locate the cell centre where the cell contours meet. Choose a position on the floor
plan that:
• is furthest from the critical points,
• still provides good audio quality at the critical point,
• complies with the Rules and guidelines for selecting cell centres on page 60,
and
• is in the coverage area.
With a pencil, label the cell centre on the floor plan with the symbol: xCn, where x
= the floor and n = is the cell number in sequence of the entire plan.
In Figure 34: Example of a cell centre on page
68, IC1 is a cell centre.
5. Demarcate a cell boundary.
To demarcate a cell boundary:
a. Set up the deployment tool basestation at the cell centre.
b. Establish a link.
c. Refer to the floor plan and check audio quality in user offices within the
cell. If a user office is in a zone where audio quality deteriorates, relocate
the cell centre closer to the critical point or the office.
d. Walk into all of the areas (rooms) necessary to demarcate the complete
cell boundary. Radio signals travel further in uncluttered areas than in
cluttered areas. Record the cell boundary.
e. Find the cell boundary by measuring the range and marking it on the floor
plan with a small x. Repeat steps
5.c on page 92 and step 5.d on page 92
until there are enough Xs so that a contour arc can be drawn around the
cell centre.
Site planning
92 DMC DECT Fundamentals August 2012
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