Erlang C Traffic Table
N/B
0.01
0.05
0.1
Maximum Offered Load Versus B and N
B is in %
0.5
1.0
2
5
10
1
2
3
4
5
.0001
.0142
.0860
.2310
.4428
.0005
.0319
.1490
.3533
.6289
.0010
.0452
.1894
.4257
.7342
.0050
.1025
.3339
.6641
1.065
.0100
.1465
.4291
.8100
1.259
.0200
.2103
.5545
.9939
1.497
.0500
.3422
.7876
1.319
1.905
.1000
.5000
1.040
1.653
2.313
.1500
.6278
1.231
1.899
2.607
.2000
.7403
1.393
2.102
2.847
.3000
.9390
1.667
2.440
3.241
.4000
1.117
1.903
2.725
3.569
6
7
8
9
10
.7110
1.026
1.382
1.771
2.189
.9616
1.341
1.758
2.208
2.685
1.099
1.510
1.958
2.436
2.942
1.519
2.014
2.543
3.100
3.679
1.758
2.297
2.866
3.460
4.077
2.047
2.633
3.246
3.883
4.540
2.532
3.188
3.869
4.569
5.285
3.007
3.725
4.463
5.218
5.986
3.344
4.103
4.878
5.668
6.469
3.617
4.406
5.210
6.027
6.853
4.062
4.897
5.744
6.600
7.465
4.428
5.298
6.178
7.065
7.959
11
12
13
14
15
2.634
3.100
3.587
4.092
4.614
3.186
3.708
4.248
4.805
5.377
3.470
4.018
4.584
5.166
5.762
4.279
4.896
5.529
6.175
6.833
4.712
5.363
6.028
6.705
7.394
5.213
5.901
6.602
7.313
8.035
6.015
6.758
7.511
8.273
9.044
6.765
7.554
8.352
9.158
9.970
7.280
8.099
8.926
9.760
10.60
7.688
8.530
9.379
10.23
11.09
8.336
9.212
10.09
10.98
11.87
8.857
9.761
10.67
11.58
12.49
16
17
18
19
20
5.150
5.699
6.261
6.835
7.419
5.962
6.560
7.169
7.788
8.417
6.371
6.991
7.622
8.263
8.914
7.502
8.182
8.871
9.568
10.27
8.093
8.801
9.518
10.24
10.97
8.766
9.505
10.25
11.01
11.77
9.822
10.61
11.40
12.20
13.00
10.79
11.61
12.44
13.28
14.12
11.44
12.29
13.15
14.01
14.87
11.96
12.83
13.70
14.58
15.45
12.77
13.66
14.56
15.47
16.37
13.41
14.33
15.25
16.18
17.10
21
22
23
24
25
8.013
8.616
9.228
9.848
10.48
9.055
9.702
10.36
11.02
11.69
9.572
10.24
10.91
11.59
12.28
10.99
11.70
12.43
13.16
13.90
11.71
12.46
13.21
13.96
14.72
12.53
13.30
14.08
14.86
15.65
13.81
14.62
15.43
16.25
17.08
14.96
15.81
16.65
17.51
18.36
15.73
16.60
17.47
18.35
19.22
16.34
17.22
18.11
19.00
19.89
17.28
18.19
19.10
20.02
20.93
18.03
18.96
19.89
20.82
21.76
26
27
28
29
30
11.11
11.75
12.40
13.05
13.71
12.36
13.04
13.73
14.42
15.12
12.97
13.67
14.38
15.09
15.80
14.64
15.38
16.14
16.89
17.65
15.49
16.26
17.03
17.81
18.59
16.44
17.23
18.03
18.83
19.64
17.91
18.74
19.57
20.41
21.25
19.22
20.08
20.95
21.82
22.68
20.10
20.98
21.87
22.75
23.64
20.79
21.68
22.58
23.48
24.38
21.85
22.77
23.69
24.61
25.54
22.69
23.63
24.57
25.50
26.44
31
32
33
34
35
14.38
15.05
15.72
16.40
17.09
15.82
16.53
17.24
17.95
18.67
16.52
17.25
17.97
18.71
19.44
18.42
19.18
19.95
20.73
21.51
19.37
20.16
20.95
21.75
22.55
20.45
21.26
22.07
22.89
23.71
22.09
22.93
23.78
24.63
25.48
23.56
24.43
25.30
26.18
27.06
24.53
25.42
26.32
27.21
28.11
25.29
26.19
27.10
28.01
28.92
26.46
27.39
28.31
29.24
30.17
27.38
28.33
29.27
30.21
31.16
36
37
38
39
40
17.78
18.47
19.17
19.87
20.58
19.39
20.12
20.85
21.59
22.33
20.18
20.92
21.67
22.42
23.17
22.29
23.07
23.86
24.65
25.44
23.35
24.15
24.96
25.77
26.58
24.53
25.36
26.18
27.01
27.84
26.34
27.19
28.05
28.91
29.77
27.94
28.82
29.71
30.59
31.48
29.00
29.90
30.80
31.71
32.61
29.83
30.74
31.65
32.57
33.48
31.10
32.03
32.97
33.90
34.83
32.10
33.05
34.00
34.94
35.89
41
42
43
21.28
22.00
22.71
23.07
23.81
24.56
23.93
24.69
25.45
26.23
27.03
27.83
27.39
28.21
29.02
28.68
29.51
30.35
30.63
31.50
32.36
32.37
33.26
34.15
33.51
34.42
35.33
34.40
35.32
36.23
35.77
36.70
37.64
36.84
37.79
38.74
15
20
30
40
44
45
23.43
24.15
25.31
26.06
26.22
26.98
28.63
29.44
29.84
30.67
31.19
32.03
33.23
34.10
35.04
35.93
36.23
37.14
37.15
38.07
38.58
39.51
39.69
40.64
46
47
48
49
50
24.88
25.60
26.34
27.07
27.80
26.82
27.57
28.33
29.10
29.86
27.75
28.52
29.30
30.08
30.86
30.24
31.05
31.86
32.68
33.49
31.49
32.32
33.14
33.97
34.80
32.87
33.72
34.56
35.41
36.26
34.97
35.84
36.72
37.59
38.47
36.83
37.72
38.62
39.52
40.42
38.05
38.96
39.87
40.79
41.70
39.00
39.92
40.84
41.76
4?,69
40.45
41.39
42.33
43.27
44.21
41.59
42.54
43.50
44.45
45.40
51
52
53
54
55
28.54
29.28
30.03
30.77
31.52
30.63
31.40
32.17
32.95
33.72
31.64
32.42
33.21
33.99
34.78
34.31
35.12
35.94
36.76
37.59
35.64
36.47
37.31
38.15
38.99
37.11
37.97
38.82
39.67
40.53
39.35
40.23
41.10
41.99
42.87
41.32
42.22
43.12
44.02
44.93
42.61
43.53
44.44
45.36
46.28
43.61
44.54
45.47
46.39
47.32
45.15
46.10
47.04
47.98
48.93
46.36
47.31
48.27
49.22
50.18
56
57
58
59
60
32.27
33.03
33.78
34.54
35.30
34.50
35.28
36.06
36.85
37.63
35.57
36.37
37.16
37.96
38.76
38.41
39.24
40.07
40.90
41.73
39.83
40.67
41.51
42.36
43.20
41.39
42.25
43.11
43.97
44.83
43.75
44.64
45.52
46.41
47.29
45.83
46.74
47.64
48.55
49.46
47.20
48.12
49.04
49.96
50.88
48.25
49.18
50.11
51.04
51.97
49.87
50.82
51.76
52.71
53.65
51.13
52.09
53.05
54.01
54.96
61
62
63
64
65
36.06
36.82
37.59
38.35
39.12
38.42
39.21
40.00
40.80
41.59
39.56
40.36
41.16
41.97
42.78
42.56
43.39
44.23
45.06
45.90
44.05
44.90
45.75
46.60
47.45
45.70
46.56
47.43
48.30
49.16
48.18
49.07
49.96
50.85
51.74
50.37
51.27
52.18
53.10
54.01
51.80
52.72
53.64
54.57
55.49
52.90
53.83
54.77
55.70
56.63
54.60
55.55
56.49
57.44
58.39
55.92
56.88
57.84
58.80
59.76
66
67
68
69
70
39.89
40.66
41.44
42.21
42.99
42.39
43.18
43.98
44.78
45.58
43.58
44.39
45.20
46.02
46.83
46.74
47.58
48.42
49.26
50.10
48.30
49.16
50.01
50.87
51.73
50.03
50.90
51.77
52.65
53.52
52.64
53.53
54.42
55.32
56.21
54.92
55.83
56.75
57.66
58.57
56.42
57.34
58.27
59.20
60.12
57.57
58.50
59.44
60.37
61.31
59.34
60.29
61.24
62.19
63.14
60.72
61.68
62.64
63.60
64.56
71
72
73
74
75
43.77
44.55
45.33
46.11
46.90
46.39
47.19
48.00
48.81
49.61
47.64
48.46
49.28
50.10
50.92
50.95
51.79
52.64
53.49
54.34
52.59
53.45
54.31
55.17
56.03
54.39
55.27
56.14
57.02
57.90
57.11
58.01
58.90
59.80
60.70
59.49
60.41
61.32
62.24
63.16
61.05
61.98
62.91
63.84
64.76
62.25
63.18
64.12
65.06
66.00
64.09
65.04
65.99
66.94
67.89
65.52
66.48
67.44
68.40
69.37
76
77
78
79
80
47.68
48.47
49.26
50.05
50.84
50.42
51.23
52.05
52.86
53.68
51.74
52.56
53.38
54.21
55.03
55.19
56.04
56.89
57.74
58.60
56.89
57.76
58.62
59.49
60.36
58.78
59.65
60.53
61.41
62.30
61.60
62.50
63.40
64.30
65.21
64.07
64.99
65.91
66.83
67.75
65.69
66.63
67.56
68.49
69.42
66.94
67.88
68.82
69.76
70.70
68.85
69.80
70.75
71.70
72.66
70.33
71.29
72.25
73.22
74.18
81
82
83
84
85
51.63
52.43
53.22
54.02
54.81
54.49
55.31
56.13
56.95
57.77
55.86
56.69
57.52
58.35
59.18
59.45
60.30
61.16
62.02
62.88
61.22
62.09
62.96
63.83
64.70
63.18
64.06
64.94
65.83
66.71
66.11
67.01
67.92
68.82
69.73
68.67
69.59
70.52
71.44
72.36
70.35
71.28
72.22
73.15
74.08
71.64
72.58
73.52
74.46
75.40
73.61
74.57
75.52
76.47
77.43
75.14
76.11
77.07
78.04
79.00
86
87
88
89
90
55.61
56.41
57.21
58.02
58.82
58.59
59.41
60.23
61.06
61.88
60.01
60.84
61.67
62.51
63.34
63.73
64.59
65.45
66.32
67.18
65.57
66.45
67.32
68.19
69.07
67.60
68.48
69.37
70.26
71.15
70.63
71.54
72.45
73.35
74.26
73.28
74.21
75.13
76.06
76.98
75.02
75.95
76.89
77.82
78.76
76.35
77.29
78.23
79.18
80.12
78.38
79.34
80.30
81.25
82.21
79.97
80.93
81.90
82.86
83.83
91
92
93
94
95
59.62
60.43
61.23
62.04
62.85
62.71
63.54
64.36
65.19
66.02
64.18
65.02
65.86
66.70
67.54
68.04
68.90
69.77
70.63
71.50
69.94
70.82
71.70
72.57
73.45
72.04
72.92
73.81
74.71
75.60
75.17
76.08
76.99
77.90
78.81
77.91
78.83
79.76
80.69
81.61
79.69
80.63
81.57
82.50
83.44
81.06
82.01
82.95
83.90
84.84
83.16
84.12
85.08
86.03
86.99
84.79
85.76
86.73
87.69
88.66
96
97
98
99
100
63.66
64.47
65.28
66.09
66.91
66.85
67.69
68.52
69.35
70.19
68.38
69.22
70.06
70.90
71.75
72.36
73.23
74.10
74.97
75.84
74.33
75.21
76.09
76.97
77.85
76.49
77.38
78.27
79.17
80.06
79.72
80.63
81.54
82.46
83.37
82.54
83.47
84.39
85.32
86.25
84.38
85.32
86.26
87.20
88.13
85.79
86.74
87.68
88.63
89.58
87.95
88.91
89.87
90.82
91.78
89.62
90.59
91.56
92.53
93.49
N is the number of servers. The numerical column headings indicate blocking probability B in %. Table generated by Dan Dexter