Panasonic KX-NCP0158 Quick Installation Manual page 19

CS Classifications
CSs are assigned to any one of the following three classifications for implementing air synchronisation:
CS Class
Master CS1 (synchronisation
source clock)
Master CS2 (backup for
Master CS1)
Slave CS
Synchronisation Hierarchy
Air synchronisation has a hierarchical structure with a Master CS1 at the top. Therefore, it is necessary to
conduct the site survey with extreme care to ensure stable synchronisation since one disruption of the radio
link could loss of service to a wide area.
Master CS1
(Master Clock Signal)
Slave CSs
Search Order (Primary/Secondary)
The search order used for synchronising CSs must be set. If the CS cannot synchronise with the Primary CS
for some reason, it will try to synchronise with the Secondary CS.
CS Class
Master CS1
Master CS2
Slave CS
For example, if synchronisation is completely lost by malfunction of the Master CS etc., handover will not work
and ongoing calls will be disconnected after a while. In addition, new calls cannot be made or received.
Therefore, it is recommended to not only assign the Primary CS but also the Secondary CS as an alternative
source for synchronising CSs.
Generates clock signal.
Receives clock signal from Master CS1 (can also generate
clock signal if Master CS1 malfunctions).
Receives clock signal from other CSs.
Master CS2
Slave CS
Primary CS
None
Master CS1
Master CS1, Master CS2, or Slave
CS
Description
Master CS1
(Master Clock Signal)
Radio Link Loss
CSs stop working
Slave CSs
Secondary CS
None
None
Master CS1, Master CS2, Slave
CS, or None
3 Site Planning
Master CS2
Slave CS
Quick Installation Guide 19