Mitel SX-2000 EL Information Manual page 237

Assumptions made for this example of receiver requirements
- CLASS hold time = 4.51 seconds average for incoming traffic
- For ACD applications the 100% of total traffic is assumed for the incoming traffic
- For heavy traffic conditions p.999 is recommended.
LS/CLASS
Circuits
4
8
12
16
20
24
28
32
36
40
44
48
Note: Shaded configurations exceed number of system allowable receivers (5)
50003510
CLASS Receiver Requirements for Heavy Traffic
Incoming
Total Calls Percentage
per hour of total
traffic
50 35%
50 100%
99 35%
99 100%
144 35%
144 100%
251 33%
251 100%
360 31%
360 100%
478 31%
478 100%
594 30%
594 100%
730 29%
730 100%
829 29%
829 100%
962 28%
962 100%
1095 28%
1095 100%
1226 28%
1226 100%
CLASS rcvr
Traffic Load
Erlangs
0.02
0.06
0.04
0.12
0.06
0.18
0.10
0.31
0.14
0.45
0.19
0.60
0.22
0.74
0.27
0.91
0.30
1.04
0.34
1.21
0.38
1.37
0.43
1.54
Revision A
Specifications
Required CLASS
receivers for ERLANG B
Grade of Service
P.99 P.999
2 2
2 3
2 2
2 3
2 3
3 3
2 3
3 4
2 3
3 5
3 3
4 5
3 4
4 5
3 4
5 6
3 4
5 6
3 4
5 7
3 4
6 7
3 4
6 7
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