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ITG Engineering Guidelines Page 95 of
378
ITG Trunk 2.0 ISDN Signaling Link (ISL) Description, Installation and Operation
101 2847 111 3166 121 3488 131 3810 141 4134
102 2879 112 3198 122 3520 132 3843 142 4167
103 2910 113 3230 123 3552 133 3875 143 4199
104 2942 114 3262 124 3594 134 3907 144 4231
105 2974 115 3294 125 3616 135 3939 145 4264
106 3006 116 3326 126 3648 136 3972 146 4297
107 3038 117 3359 127 3681 137 4004 147 4329
108 3070 118 3391 128 3713 138 4037 148 4362
109 3102 119 3424 129 3746 139 4070 149 4395
110 3135 120 3456 130 3778 140 4102 150 4427
Table 13
Trunk traffic—Poisson 10 percent blocking Grade of Service (Part 1 of 2)
Trunks CCS Trunks CCS Trunks CCS Trunks CCS Trunks CCS
1 3.8 18 462 35 996 52 1548 69 2109
2 19.1 19 492 36 1028 53 1581 70 2142
3 39.6 20 523 37 1060 54 1614 71 2175
4 63 21 554 38 1092 55 1646 72 2209
5 88 22 585 39 1125 56 1679 73 2242
6 113 23 616 40 1157 57 1712 74 2276
7 140 24 647 41 1190 58 1745 75 2309
8 168 25 678 42 1222 59 1778 76 2342
9 195 26 710 43 1255 60 1811 77 2376
10 224 27 741 44 1287 61 1844 78 2410
11 253 28 773 45 1320 62 1877 79 2443
12 282 29 805 46 1352 63 1910 80 2477
13 311 30 836 47 1385 64 1943 81 2510
14 341 31 868 48 1417 65 1976 82 2543
15 370 32 900 49 1450 66 2009 83 2577
16 401 33 932 50 1482 67 2042 84 2610
17 431 34 964 51 1515 68 2076 85 2644
Note:
For trunk traffic greater than 4843 CCS, allow 34 CCS per trunk.
Table 12
Trunk traffic—Poisson 1 percent blocking Grade of Service (Part 2 of 2)
Trunks CCS Trunks CCS Trunks CCS Trunks CCS Trunks CCS
Note:
For trunk traffic greater than 4427 CCS, allow 29.5 CCS per trunk.