Panasonic KX-NCP0158 Quick Installation Manual page 18

3 Site Planning
Implementing Air Synchronisation
CS Coverage Area for Air Synchronisation between CSs
The example below shows the size of the area where one CS can synchronise with other CSs, if it is installed
in an area with no obstacles.
Note
Radio signal strength levels are measured during the site survey (refer to "5 Site Survey Using the
KX-TCA175/KX-TCA255/KX-TCA256/KX-TCA275/KX-TCA355/KX-TD7590").
Radio Signal Strength Levels
Level: 12 or higher
Level: 08 to 11
Level: 06 to 07
Level: 05
Level: 03 to 04
Level: 00 to 02
18 Quick Installation Guide
C
Gray Zone:
Conversation will be
intermittent
May be reset due to synchronisation failure of CSs
Good
Better
Good
Air synchronisation is established. However, it is necessary to monitor
the status of synchronisation using the Maintenance Console.
This is necessary because IP-CSs may be reset due to synchronisation
failure if the radio signal strength fluctuates depending on changes in
the installation environment such as opening/closing doors.
May be reset due to synchronisation failure of CSs
A
B
C
A
Coverage Area
Radio signal strength level is
between "3" (about 50 m to 60 m)
and "11" (about 20 m to 30 m).
B
Good Coverage Area
Radio signal strength level is
between "5" (about 40 m to 50 m)
and "11" (about 20 m to 30 m).
Good synchronisation quality
can be maintained.
C
Out of Service:
Radio signal strength level is
"12 or higher" (about 0 m to 20 m)
or "00 to 02".
Cannot be synchronised.