Mitel SX-2000 User Manual
Page 237
Specifications
50003510
Revision A
223
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.
CLASS Receiver Requirements for Heavy Traffic
LS/CLASS
Circuits
Total Calls
per hour
Incoming
Percentage
of total
traffic
CLASS rcvr
Traffic Load
Erlangs
Required CLASS
receivers for ERLANG B
Grade of Service
P.99 P.999
4
50
35%
0.02
2
2
50
100%
0.06
2
3
8
99
35%
0.04
2
2
99
100%
0.12
2
3
12
144
35%
0.06
2
3
144
100%
0.18
3
3
16
251
33%
0.10
2
3
251
100%
0.31
3
4
20
360
31%
0.14
2
3
360
100%
0.45
3
5
24
478
31%
0.19
3
3
478
100%
0.60
4
5
28
594
30%
0.22
3
4
594
100%
0.74
4
5
32
730
29%
0.27
3
4
730
100%
0.91
5
6
36
829
29%
0.30
3
4
829
100%
1.04
5
6
40
962
28%
0.34
3
4
962
100%
1.21
5
7
44
1095
28%
0.38
3
4
1095
100%
1.37
6
7
48
1226
28%
0.43
3
4
1226
100%
1.54
6
7
Note: Shaded configurations exceed number of system allowable receivers (5)