13
Projecting the DECT network
Depending on the topology of your DECT network, your synchronisation hierarchy could
look like this, for example.
Capacity measurement
The capacity of the PABX must be large enough to guarantee that the subscribers can be
reached in high-density traffic. Both the capacity of the entire PABX and the capacity of
the individual cells must be taken into account.
The capacity of the PABX is determined using the following criteria:
u
Number of connection channels available
The number of connection channels available defines how many calls can be con-
ducted simultaneously. Reminder: the number of possible connections per base sta-
tion is eight in
, four in
.
u
Grade of service (GoS)
The grade of service determines the number of connections that may not be achieved
due to the system being at full capacity, i.e., the line is engaged. A grade of service of
1% means that out of 100 calls, one cannot be connected for capacity reasons.
The capacity required can be determined using these two factors and the traffic volume
expected.
Please note that the volume of traffic can vary during the course of the day.
During the synchronisation planning, make
sure that the distance to the base station
with sync level 1 is as short as possible from
all sides, i.e., that there are as few levels as
possible. It makes sense to select the station
that is at the centre of your DECT network as
the base station with sync level 1.
3
2
3
2
1
5
4
3
2
1
Correct:
Incorrect:
5
4
3
5
4
3
2
5
4
3
1
3
2
2
2
2
3
3
3
3
3
3
3
4
4
4
4
4
4
4
2
1
5
4
3
2
2
1
1
2
2
2
2
3
3
3
3
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