Panasonic KX-NCP0158 Quick Installation Manual page 7

Air Synchronization
It is necessary to establish synchronization for stable operation and handover between IP-CSs and other CSs.
As a method of synchronization, air synchronization is used.
Headquarters Headquarters
IP-CS
IP-CS IP-CS
Air Synchronization is required
CSs are classified into one of the following three classifications for implementing air synchronization:
CS Class
Master CS1 (synchronization
source clock)
Master CS2 (backup for
Master CS1)
Slave CS
Document Version 2009-06
IP-CS
Switching Hub Router
PBX
Generates clock signal.
Receives clock signal from Master CS1 (can also generate
clock signal if Master CS1 malfunctions).
Receives clock signal from other CSs.
Remote Office Remote Office
Router Switching Hub
IP Network
Air Synchronization is not required
Description
1 Overview
IP-CS
Quick Installation Guide 7