Panasonic KX-TDE100, Руководство по установке, Страница: 227 / 294

Note
Radio signal strength levels are measured during the site survey (refer to "3.11.5 Site Survey").
A
B
A
B
C
Gray Zone:
Conversation will be
intermittent
Out of Service:
Cannot make/receive calls
Good Coverage Area
Radio signal strength
level is greater than "8".
(About 20 m to 30 m)
Good sound quality
can be maintained.
Coverage Area
Radio signal strength level is
greater than "3".
(About 35 m to 50 m)
Radio Signal Strength Levels
Better
Good
May receive noise
Receives noise easily or disconnects
Out of range Level: 11 to 12
Level: 08 to 10
Level: 03 to 07
Level: 01 to 02
Level: 00
Site Survey Preparation
1.
Obtain a map and investigate the installation site.
a.
Check the obstacles (e.g., shelves, columns, and partitions).
b.
Check the materials of the structures (e.g., metal, concrete, and plywood).
c.
Check the layout and dimensions of the room, corridor, etc.
d.
Write down the above information on the map.
2.
Examine the service area required by the user on the map, referring to the following example.
a.
Draw the coverage area around a CS. Extend the coverage area 20 m to 50 m in each direction,
depending on the materials of the building structures and obstacles in the installation site. Note that a
CS cannot be installed outside a building.
b.
If 1 CS cannot cover the entire service area, install additional CSs as required. Overlap the coverage
areas of adjacent CSs.
Where CS coverage areas overlap, the PS will start call handover to the next CS if the signal from one
CS becomes weak. However, if a PS moves away from a CS and there are no CSs available for
handover, the PS may go out of range and the call could be lost.
Installation Manual 227
3.11.3 Site Planning