Aastra Ascotel IntelliGate A150 System Manual page 30

Ascotel® DECT System
Location areas
Up to 4 location areas can be configured in an Ascotel® DECT system. With incoming
calls each handset is called by the system simultaneously via all the radio units of a
location area in which the handset is logged on. As the capacity of the signalling
channel is limited, splitting the radio units into several location areas needs to be
considered in the following cases:
• As of approx. 80 handsets and a large volume of incoming calls
• If more than 9 incoming calls are to be signalled on the handsets within one
second
Distributing the radio units over several location areas ensures that the radio traffic
involved in locating handsets for incoming calls is distributed across the location
areas. This means that overall more calls can be processed simultaneously.
If a handset switches from the coverage range of one location to that of another, the
handset will automatically log into the new area from scratch. To prevent handsets
from constantly logging themselves on in location areas, make sure you observe the
following points:
• The radio units of any given location area should cover a contiguous area (see
example on page
• Handsets should be used mainly within the same location area.
• Handsets should not be continually used in the overlap zone between two
location areas.
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Planning DECT systems