# DECT location areas

Up to 4 radio areas (location areas) can be defined here for larger DECT systems.

Location areas are used to divide the radio area into as many as four locally subdivided supply ranges. During an incoming call, the cordless phone is called simultaneously by the system via all the radio units of a location area. The system knows the location area in which a cordless phone is located and only needs to send messages to the cordless phone within that location area. Location area partitioning helps to reduce the system load caused by the signalling of incoming calls.

If you have a lot of radio units (at the latest if you have more then 64) you have to decide, whether you want to distribute the radio units among four or two location areas or if you want to have them all together in the same location area.

Rough rules:

- All radio units at the same location coverage the same area: Only one location area.

- Radio units at the same or different locations covering different areas: Assign each covering area a location area.

Additional reasons to distribute radio units among several location areas:

- As of approx. 80 cordless phones and a large volume of incoming calls.

- If more than 9 incoming calls are to be signalled on the cordless phones within 1 second.

- AIN with radio units on different nodes distributed among different locations.

The number of location areas can be configured in the DECT view.

If a cordless phone switches from the coverage range of one location to that of another, it automatically logs into the new area from scratch. To prevent cordless phones 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.

- Cordless phones should be used mainly within the same location area.

- Cordless phones should not be continually used in the overlap zone between two location areas.

Parent topic: TDM-DECT
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