Site Planning - Panasonic KX-UDS124 Installation Manual

4.2 Site Planning

In order to be able to move between coverage areas during a call (Handover), synchronisation between
SIP-CSs is necessary. If synchronisation between SIP-CSs has not been configured, handover will fail. The
source of synchronisation is called a Master CS and the target of synchronisation is called a Slave CS. An Air
Sync Group is created with the Master/Slave CSs on different levels. The source of synchronisation for each
SIP-CS in an Air Sync Group is called an Air Synchronisation Master CS.
The number of Master/Slave levels in an Air Sync Group cannot exceed 8. To ensure that the number of levels
does not exceed 8, locate the Air Synchronisation Master CS in the centre of the group. A greater number of
levels can lead to instability in handover and air synchronisation.
The Master CS of Air Sync Group 1 is called the Super Master CS and controls the whole system.
CS Coverage Area for Air Synchronisation between SIP-CSs
The example below shows the size of the area where one SIP-CS can synchronise with other SIP-CSs, if it is
installed in an area with no obstacles.
Area
Very Good Coverage Area:
A
Radio signal strength level is "Very Good" (1 m to 40 m).
Good synchronisation quality can be maintained.
Good Coverage Area
B
Radio signal strength level is "Good" (about 40 m to 50 m).
Out of Service:
C
Too close (0 m to 1 m) or too far so that the radio signal is lost and
the SIP-CSs cannot be synchronised.
Note
For air synchronisation radio signal strength details, refer to "Site Survey Mode" in the "LED Indications"
table found in "3.1 Overview of SIP Cell Stations".
B
A
C
C
Description
4 Deployment Procedure
Installation Guide 25