Nortel Networks NN43001-563 - Manual (Page 7)

Contents 7
G.711 84
G.729AB 84
G.729B 84
G.723.1 (5.3 kbit/s or 6.3 kbit/s) 85
Security passwords 85
Administrator level 86
Technical support level 86
ITG engineering guidelines 87
Contents 87
Introduction 89
Audience 90
Equipment requirements 91
Scope 92
Network engineering guidelines overview 93
IP Trunk 3.01 (and later) traffic engineering 95
Estimate voice traffic calculations 95
Calculate the number of IP Trunk 3.01 (and later) ports required 99
Calculate number of IP trunk cards required 101
Factors that effect the real-time capacity 104
Host module type 104
Ports configured o n the L eader card, c odec s election ,and v oice sample size 104
Size of the IP Trunk 3.01 (and later) network 104
Endpointtype 105
TheAverage Hold Time (AHT) and distribution of incoming calls 105
CalculateEthernet and WAN bandwidth usage 112
SilenceSuppression engineering considerations 114
Faxengineering considerations 115
TAT a nd TRO considerations 116
WAN route bandwidth engineering 119
Assess WAN link resources 122
Link utilization 122
Estimate network loading caused by IP Trunk 3.01 (and later) traffic 123
Route Link Traffic Estimation 124
Enough capacity 126
Insufficient link capacity 127
Other intranet resource considerations 127
Implement QoS in IP networks 127
Traffic mix 128
TCP traffic behavior 128
IP Trunk 3.01 (and later) DiffServ support for IP QoS 129
Queue management 130
Nortel Communication Server 1000
IP Trunk Fundamentals
NN43001-563 01.01 Standard
Release 5.0 30 May 2007
Copyright © 2007, Nortel Networks
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