DECT over IP
®
Configuration
142
starts with a different value (e. g. 30), prevention of unintentional handovers is
effective.
10.2.2 Synchronisation
Transmissions of all DECT base stations at a single location must be synchronised
in order that DECT terminals are able to receive multiple DECT base stations simul-
taneously. Synchronisation can be conducted via U
pn
access. It cannot be con-
ducted via an Ethernet/IP connection. DECT over IP base stations are thus synchro-
nised via wireless connection.
When planning a larger sized DECT network, it is advisable to take the following
points into consideration:
■ All DECT over IP base stations at a single location must be able to receive at
least one, or even better, two neighbouring base stations. Synchronisation
requires less signal strength than a voice connection does.
■ Synchronisation range is increased using multiple base stations. To decrease
the probability of a connection breakdown, base stations should not be
arranged in chain formation. The signal should be distributed with a network
that is as extensive as possible and where each base station is supported by
multiple synchronisation partners.
■ To re-synchronise, first wait for all current connections to be terminated.
You can operate a DECT network consisting of several remote locations
(“clusters”). A cluster is a number of DECT base stations that operate synchro-
nously with each other. No handover is possible between DECT base stations from
different clusters. You should configure a second cluster for DECT base stations of
a second location.
10.2.3 Setting up the WLAN Function
The RFP 42 DECT over IP base station provide the additional function of a Wireless
LAN Access Point (WLAN-AP). WLAN refers to data transfer by means of radio
waves in accordance with the IEEE 802.11b/g standard. This standard enables a
wireless connection to be made to an Ethernet network (LAN) using suitably
equipped user terminals. Data transfer via radio waves is very fast. Depending on
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