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IP Trunk 3.01 (and later) traffic engineering 101
Trun
ks
CCS
Trun
ks
CCS
Trun
ks
CCS
Trun
ks
CCS
Trun
ks
CCS
86 2678 99 3116 112 3552 125 3992 138 4434
87 2711 100 3149 113 3585 126 4026 139 4468
88 2745 101 3180 114 3619 127 4060 140 4502
89 2778 102 3214 115 3653 128 4094 141 4536
90 2812 103 3247 116 3687 129 4128 142 4570
91 2846 104 3282 117 3721 130 4162 143 4604
92 2880 105 3315 118 3755 131 4196 144 4638
93 2913 106 3349 119 3789 132 4230 145 4672
94 2947 107 3383 120 3823 133 4264 146 4706
95 2981 108 3417 121 3857 134 4298 147 4741
96 3014 109 3450 122 3891 135 4332 148 4775
97 3048 110 3484 123 3924 136 4366 149 4809
98 3082 111 3518 124 3958 137 4400 150 4843
For trunk traffic greater than 4843 CCS, allow 34 CCS per trunk.
Calculate number of IP trunk cards required
The number of IP trunk cards is not just a function of the total number of
ports required. It is important to determine if an IP Trunk 3.01 (and later)
node has enough CPU capacity to handle the expected call volume.
As the size of an IP Trunk 3.01 (and later) implementation increases,
real-time engineering becomes more important. The IP trunk cards that are
acting as the Leader card or DCHIP card have a limited amount of CPU
resources. For nodes with more than four cards and/or in large networks,
such as those with more than 30 QoS endpoints, the CPU capacity
(real-time capacity) must be considered.
Recommendation
Nortel strongly recommends implementing suitable QoS mechanisms on any IP
network carrying VoIP.
Leader and DCHIP card standard configuration rules
1. Leader 0 with no DCHIP and all voice ports configured. Leader 1 with
DCHIP supporting all Followers. This configuration should be suitable
for most sites.
2. Leader 0 with no DCHIP and all voice ports configured. Leader 1 with
DCHIP supporting half of the Followers. A Follower card with DCHIP
Nortel Communication Server 1000
IP Trunk Fundamentals
NN43001-563 01.01 Standard
Release 5.0 30 May 2007
Copyright © 2007, Nortel Networks
.