Panasonic KX-NCP0158 Quick Installation Manual page 17

Implementing Air Synchronization
CS Coverage Area for Air Synchronization between CSs
The example below shows the size of the area where one CS can synchronize 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-TD7685/KX-TD7695/KX-TD7696").
Radio Signal Strength Levels
Level: 12 or higher
Level: 05 to 11
Level: 03 to 04
Level: 00 to 02
Document Version 2009-06
A
B
Gray Zone:
Conversation will be
intermittent
May be reset due to synchronization failure of CSs
Good
Air synchronization is established. However, it is necessary to monitor
the status of synchronization using the Maintenance Console.
This is necessary because IP-CSs may be reset due to synchronization
failure if the radio signal strength fluctuates depending on changes in
the installation environment such as opening/closing doors.
May be reset due to synchronization failure of CSs
A Coverage Area
Radio signal strength level is
greater than "3".
(About 50 m to 60 m [164 ft to 197 ft])
B Good Coverage Area
Radio signal strength level is
between "5" (about 40 m to 50 m
[131 ft to 164 ft]) and "11"
(about 20 m to 30 m [65 ft to 98 ft]).
Good synchronization quality
can be maintained.
C Out of Service:
Cannot be synchronized.
3 Site Planning
Quick Installation Guide 17