11
Projecting the DECT network
Gigaset N720 DECT IP Multicell System / engbt / A31008-M2316-L101-2-7619 / preparation.fm / 10.02.2012
Version 2, 06.08.2010
u Maintain sufficient distance between the base stations as they can interfere with one
another. The minimum distance depends on the circumstances. If no obstacles are
present, the required distance can be 5 to 10 metres. If there is an absorbent wall or
absorbent furniture between the base stations, 1 to 2 metres may be sufficient. You
will also find information about possible interferences in the Material characteristics
and interference factors section
£ page 16.
u In a horizontal direction, good connections can still be established behind 2–3 normal
brick walls. In a vertical direction and on the ground floor or in basements, concrete
ceilings are difficult to penetrate. This means that every floor may have to be supplied
separately.
u Please note that in empty buildings, adding furniture and equipment (machines, mov-
able walls, etc.) at a later stage will affect the wireless quality.
u Openings in obstacles improve the technical wireless conditions.
u Consider any possible interference factors (£ page 16).
Installation guidelines
The following points must be considered when installing DECT base stations:
u For wireless coverage within a building, always install the base stations on internal
walls. Information on installation in an outside area,
£ page 42.
u Depending on the room height, the optimum installation height of a base station is
between 1.8 and 3 m. If you want to install the base stations at a lower height, interfer-
ence can occur as a result of furniture or movable objects. There should be a minimum
clearance of 0.5 m to the ceiling.
u We recommend installing all base stations at the same height.
u The Gigaset N720 IP PRO base stations require an Ethernet connection to the PABX, i.e.,
it must be possible to connect to the LAN.
u The Gigaset N720 IP PRO base stations are powered by PoE (Power over Ethernet,
IEEE 802.3af). Therefore, you do not normally require a power connection. However, if
you use an Ethernet switch that does not support PoE, you can use a PoE injector as an
alternative. If there is an option of connecting to the mains power supply in the vicinity
of the base station, you can also use the power adapter to provide a power supply (to
be ordered separately).
u Do not install the base station in suspended ceilings, cupboards or other closed fur-
nishings. The wireless coverage can be significantly reduced, depending on the mate-
rials used.
u The base station should be installed vertically.
u The location and alignment of the base station installed should be identical to the
position deemed optimum during the measurement stage.
u Avoid installation in the direct vicinity of cable channels, metal cupboards or other
larger metal parts. These can reduce the radiation and couple into interfering signals.
There should be a minimum distance of 50 cm.
u Observe the safety distances and safety regulations. Observe the regulations specified
in rooms where there is a danger of explosions.
