Gigaset N870 IP Pro Site Planning And Measurement Manual page 6

Introduction
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Cluster forming
A cluster comprises a number of base stations of a DECT manager that synchronise with each
other to enable handovers, roaming and load balancing.
Handover:
Roaming:
Load balancing: A DECT connection is not set up with the current base station for a call,
Handovers and load balancing can only be realised by base stations that are synchronised
with each other.
A DECT manager normally manages a cluster.
DECT
Manager
The DECT Manager is connected to the base stations and the PABX via the local network and
is therefore not dependent on DECT ranges. Base stations that are far apart can be grouped
into different clusters if synchronisation is barely, or not, possible, and is not required. All the
base stations of a DECT manager must belong to the same LAN subnet of the DECT manager.
Cluster 1
For installations in different LAN subnets, multiple DECT managers with one DECT manager
per subnet are required. The DECT manager function can be installed in parallel on the same
device (depending on the capacity of the local base station). Multiple DECT managers are
also required when the requirement is to connect more than 250 handsets or provide more
than 60 connection channels.
6
The DECT connection of a handset is passed to another base station during
a call.
A handset in idle mode is connected to the system via a new base station.
for administration or for other customer-specific purposes because it is
overloaded with active DECT or media connections. It is instead set up with
a neighbouring base station having free resources.
Cluster 1
DECT
Cluster 2
manager
LAN
LAN