Alcatel-Lucent OmniPCX Office Installation Manual page 110

Chapter
4
Take as an example a building with a metallic structure. A radio wave will tend to be subject to
many reflections which will consequently degrade system performance.
Moreover, the range of an Alcatel-Lucent 4070 IO/EO is very dependent on the amount of
attenuation subjected to the radio wave across various zones.
The following table gives the values of global coverage zone (cell) for an Alcatel-Lucent 4070
IO/EO under normal environmental and topological conditions:
Coverage area
Area:
4.9.1.3 NUMBER OF USERS PER BASE STATION
Type of Base Station connection.
4.9.1.4 LOCATING DECT BASE STATIONS
As a result of the environment and the infrastructure, certain recommendations must be taken
into account for locating Alcatel-Lucent 4070 IO/EO:
Recommendations for location
INTERIOR COV-
ERAGE
Do not fix directly to a metallic structure
Do not place in false ceilings or in telecom
As far as possible from industrial machines
EXTERNAL COV- Place the base stations in an open space
ERAGE
4.9.1.5 INTERACTIONS
Interactions with other features
IBS DECT and IBS PWT (Personal Wireless Telecommunications) cannot run together on the
same system. The first IBS plugged determines the system type (DECT or PWT).
To switch from one system to another, unplug all IBSs, make a warm restart and plug in the
IBSs.
Interactions with other applications
IBSs are fully compatible with other wireless technologies such as VOWLAN.
4-72
~ 7,000 m
3 channels
6 channels
As far as possible from walls
rooms
or electrical cabinets
(as far as possible from buildings)
Place the base stations higher than low
obstacles (trees, cars etc.)
Interior Exterior
~ 50 m ~ 400 m
2
~ 50 000 m
Number of DECT users
4
12
Possible solutions
Suspend Alcatel-Lucent 4070 IO/EO in a
Move Alcatel-Lucent 4070 IO/EO into an-
Place Alcatel-Lucent 4070 IO/EO in useful
Place 4070 IO/EO in useful zones
At the top of buildings on pylons for ex-
2
clear zone
other zone
zones (corridors)
Attached to pylons for example
ample