Aastra NeXspan S Installation And Maintenance Manual page 9

RFP cluster
Primary RFP
Secondary RFP
Page 9
While in motion, the PP continuously performs measurements to
determine which RFP is best received. The best received RFP is
defined as the active RFP. To prevent the PP from rapidly switching
back and forth between two RFPs that can be almost equally well
received, certain threshold values apply (similar to a Schmitt trigger
circuit).
An RFP cluster consists of a set of synchronised RFPs (all the RFPs
of the same cluster belonging to the same DECT network).
An RFP is defined as primary RFP for each call and each portable
handset. The RFP is in charge of setting up the call (DECT radio
channel taken between the RFP and the portable handset).
During handover, this is the new RFP with which a new radio channel
is taken with the portable handset. This RFP has a voice path set up
with the primary RFP by the LAN and also a signalling path set up by
the LAN.
The handset no longer has any radio channel set up with the primary
RFP.
01/2007 AMT/PTD/PBX/0062/1/2EN