Nortel CS 1000 Manual page 20

20 Site planning and hardware deployment
Figure 2
DAP radio signal synchronization
Due to the cellular structure of a DECT radio network, overlap exists in
the cells with sufficient voice quality. The wider cell limit around the DAP
therefore has some overlap with the other cell and reaches to the radio of
the other cell. Consequently, the DAPs of the overlapping cells exchange
radio signals. These radio signals are weak relative the signal needed by
the handsets, but are strong enough for synchronization.
ATTENTION
For signal strength calculation see
If one DAP receives a signal from another, the receiving DAP checks the
radio signals on Primary Access Right Identity (PARI), to ensure that the
signals belong to the same DECT system. If the signals belong to the
same DECT system, the DAPs synchronize according to user-configured
rules.
Nortel Communication Server 1000
SIP DECT Fundamentals
NN43120-123 02.02 30 March 2010
Copyright © 2008-2010 Nortel Networks. All Rights Reserved.
"Signal strength and frame errors" (page 22).