
CS 1000 capacity requirements 45
Table 6
Trunk traffic Poisson 1 percent blocking (cont’d.)
Trunks CCS Trunks CCS Trunks CCS Trunks CCS
26 562 76 2059 126 3648 176 5277
27 590 77 2091 127 3681 177 5310
28 618 78 2122 128 3713 178 5343
29 647 79 2153 129 3746 179 5376
30 675 80 2184 130 3778 180 5409
31 703 81 2215 131 3810 181 5442
32 732 82 2247 132 3843 182 5475
33 760 83 2278 133 3875 183 5508
34 789 84 2310 134 3907 184 5541
35 818 85 2341 135 3939 185 5574
36 847 86 2373 136 3972 186 5606
37 876 87 2404 137 4004 187 5639
38 905 88 2436 138 4037 188 5672
39 935 89 2467 139 4070 189 5705
40 964 90 2499 140 4102 19 5738
41 993 91 2530 141 4134 191 5771
42 1023 92 2563 142 4167 192 5804
43 1052 93 2594 143 4199 193 5837
44 1082 94 2625 144 4231 194 5871
45 1112 95 2657 145 4264 195 5904
46 1142 96 2689 146 4297 196 5937
47 1171 97 2721 147 4329 197 5969
48 1201 98 2752 148 4362 198 6002
49 1231 99 2784 149 4395 199 6035
50 1261 100 2816 150 4427 200 6068
Example
In a system with 100 users and 6 CCS per User, the number of CCS
required is 600 (100 users multiplied by 6 CCS per User). Locate 600 CCS
in Table 6 "Trunk traffic Poisson 1 percent blocking" (page 44).
The entry in the table shows the number of PSTN trunks is between 27
and 28 (between 590 and 618 CCS). Therefore, choose 28 as the number
of PSTN trunks.
Nortel Mobile Communication 3100
Nortel Mobile Communication 3100 Planning and Engineering
NN42030-200 03.04 17 July 2009
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