321 Studios ITG Trunk 2.0 User Manual
Meridian 1
Meridian Internet Telephony Gateway
(ITG) Trunk 2.0/ISDN Signaling Link (ISL)
Description, Installation and Operation
Document Number: 553-3001-202
Document Release: Standard 1.00
Date: April 2000
Year Publish FCC TM
Copyright © 2000 Nortel Networks
All Rights Rese rved
Printed in Canada
Information is subject to change without notice. Nortel Networks reserves the right to make changes in design
or comp onents as progress in engineering and manufacturing may warrant. This equipment has been tested
and f ound to comply with the limits for a Class A digital device pursuant to P art 15 of the FCC rules, and the
radio interference regulations of Industry Canada. These limits are designed to provide reasonable protection
against harmful interference when the equipment is operated in a commercial environmen t. This equipment
generates, uses and can radiate radio fr equency energy, and if not installed and used in accordance with the
instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a
residential area is likely to cause harmf ul interference in which case the user will be required to correct the
interference at their own expense.
SL-1 and Meridian1 are trademarks of Nortel Networks.
ITG Trunk 2.0 ISDN Signaling Link (ISL) Descriptio n, Installation and Operation
4
Revision history
April 2000
Standard, releas e 1.00. This is a global document and is issued for X11
Release 25.0x.
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ITG Trunk 2.0 ISDN Signaling Link (ISL) Description, Installation and Operation
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553-3001-202 Standard 1.00 April 2000
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Contents
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About this guide . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
System requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
List of ITG ISDN components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Ordering rules and guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Ordering rules for ITG ISL Trunk node initial configuration . . . . . 26
Ordering rules for ITG ISL Trunk node expansion . . . . . . . . . . . . . 27
Sparing ratios for ITG Trunk components . . . . . . . . . . . . . . . . . . . 28
ITG ISL Trunk card description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Card roles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Card combinations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Interactions among card functions . . . . . . . . . . . . . . . . . . . . . . . . . . 34
ITG ISL Trunk card physical description . . . . . . . . . . . . . . . . . . . . . . 37
Faceplate indicators, controls, and interfaces . . . . . . . . . . . . . . . . . 39
Backplane interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Assembly description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
ISDN Signaling Link . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Inter-card signaling paths . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Dialing plans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Multi-node configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
North American dialing plan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Flexible Numbering Plan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Electronic Switc hed Network (ESN) Network Signaling . . . . . . . . 51
Echo cancellation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Silence Suppression . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
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DTMF Through Dial . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Quality of Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Quality of Service parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Network performance utilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
E-Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Fallback to alternate facilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Triggering F allback to alternate trunk facilities . . . . . . . . . . . . . . . 57
Return to the IP network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Type of Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Fax support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Remote Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Per-call statistics support using RADIUS Client . . . . . . . . . . . . . . . . . 63
Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Messaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
SNMP MIB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
MIB-2 support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
ITG SNMP agent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Codec profiles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
G.711 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
G.729A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
G.729 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
G.723.1 (5.3 kbit/s or 6.3 kbit/s) . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Security passwords . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Administrator level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Technical su pport level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
ITG Engineering Guidelines . . . . . . . . . . . . . . . . . 71
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Audience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
ITG equipment requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Network engineering guidelines overview . . . . . . . . . . . . . . . . . . . . . 74
ITG traffic engineering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Use of Ethernet and WAN bandwidth . . . . . . . . . . . . . . . . . . . . . . 76
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Disable silence suppression at tandem nodes . . . . . . . . . . . . . . . . . 78
Simultaneous voice traffic with silence suppression . . . . . . . . . . . . 79
T-LAN traffic calculations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
General LAN and WAN engineering consi derations . . . . . . . . . . . 84
Fax engineering considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Configuration of Meridian 1 routes and network tr anslation . . . . . . . . 86
Configure the IP router on the T-LAN . . . . . . . . . . . . . . . . . . . . . . 87
Leader And DCHIP Card Real Time Engineering . . . . . . . . . . . . . 88
Provisioning ITG ISL TIE tr unks and routes . . . . . . . . . . . . . . . . . 94
WAN route engineering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Assess WAN link resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
Link utilization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
Estimate network loading caused by ITG traffic . . . . . . . . . . . . . . . 102
Route Link Traffic Estimation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
Decision: Enough capaci ty? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
Insufficient link capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
Other intranet resource considerations . . . . . . . . . . . . . . . . . . . . . . 107
QoS Evaluation Process Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
Set QoS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
Measure intranet QoS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
Measure end-to-end network delay . . . . . . . . . . . . . . . . . . . . . . . . . 114
Measure end-to-end packet loss . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
Adjust ping measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
Network delay and packe t los s evaluation example . . . . . . . . . . . . 116
Other measurement considerations . . . . . . . . . . . . . . . . . . . . . . . . . 118
Obtain QoS measurement tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
Decision: does t h e intranet meet expected ITG QoS? . . . . . . . . . . . 118
Fine-tune Network QoS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
Components of delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
Reduce link delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
Reduce hop count . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124
Adjust jitter buffer size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124
Reduce packet errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124
Routing issues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
Network modeling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
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Implement QoS in IP networks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
Traffic mix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
TCP traffic behavior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127
ITG support for TOS field and IP QoS . . . . . . . . . . . . . . . . . . . . . . 127
Queue management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128
Use of Frame Relay and ATM services . . . . . . . . . . . . . . . . . . . . . 129
Internet Protocols and Ports Used by ITG . . . . . . . . . . . . . . . . . . . 129
ITG ISL Trunk card connections . . . . . . . . . . . . . . . . . . . . . . . . . . 129
Set up a system with separate subnets for voice and managem ent . 130
Subnet configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
Single subnet option for voice and management . . . . . . . . . . . . . . 131
Multiple ITG nodes on the same E-LAN and T-LAN segments . . 132
Setting up the E-LAN or management s ubnet . . . . . . . . . . . . . . . . 132
Selecting public or private IP addresses . . . . . . . . . . . . . . . . . . . . . 132
T-LAN engineering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
Setting the Quality of Service threshold for fallback routing . . . . . 134
Basic setup of the ITG system . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134
ITG Trunk DSP profile settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
Codec types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
Fall back threshold . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136
Payload size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136
Silence suppres s ion parameters (Voice activity detection) . . . . . . . 137
Jitter buffer parameters (Voice playout delay) . . . . . . . . . . . . . . . . 137
Post-installation network measurements . . . . . . . . . . . . . . . . . . . . . . . 138
Set ITG QoS objectives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139
Intranet QoS monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140
ITG network inventory and configuration . . . . . . . . . . . . . . . . . . . 141
User feedback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141
Estimate QoS level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143
ITG MAT PC management configuration . . . . . . . 147
MAT ITG Engineering rules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147
MAT network setup guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148
MAT Remote Access configuration . . . . . . . . . . . . . . . . . . . . . . . . . . 148
MAT PC description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149
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MAT PC hardware and software requirements . . . . . . . . . . . . . . . . . . 151
Hard drive requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152
Install and configure ITG ISL Trunk node . . . . . . . 153
Before you begin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153
Installation Procedure Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154
Create the ITG Trunk Installation Summary Shee t . . . . . . . . . . . . . . . 156
Install and cabl e IT G tr unk cards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158
Card installation procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158
Install NTCW84JA Large System I/O Panel 50-Pin filter adapte r . . . 161
Remove existing I/O panel filter adapter . . . . . . . . . . . . . . . . . . . . . 162
Install NTMF94EA and NTCW84KA cables . . . . . . . . . . . . . . . . . . . 164
Install the NTCW84KA cable (for DCHIP cards) . . . . . . . . . . . . . 164
Install the NTMF94EA cable (for non-DCHIP cards) . . . . . . . . . . 166
Install shielded voice interface (T-LAN) cable . . . . . . . . . . . . . . . . 167
Install shielded management interface (E-LAN) cable . . . . . . . . . . 167
D-channel cabling for the NT0961AA 24-Port ITG Trunk card . . . . . 168
Large systems required cables and filters . . . . . . . . . . . . . . . . . . . . 168
Set NT6D80 MSDL switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168
Install filter and NTND26 cable (for MSDL and DCHIP
cards in same Large System equipment row) . . . . . . . . . . . . . . . . . . . . 169
Install filter and NTND26 cable (for MSDL and DCHIP
cards in different Large System equipment rows) . . . . . . . . . . . . . . . . 171
Meridian 1 Small System cable installation (Option 11C and
Option 11C Mini) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172
Install the serial cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173
Configure ITG Trunk data on the Meridian 1 . . . . . . . . . . . . . . . . . . . 174
Configure the ISL D-ch annel on the Meridian 1 for the
DCHIP card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174
Configure ISDN feature in customer data block . . . . . . . . . . . . . . . 178
Configure ITG ISL TIE trunk rout es . . . . . . . . . . . . . . . . . . . . . . . . 178
Configure ITG ISL trunk cards and units . . . . . . . . . . . . . . . . . . . . 182
Configure dialing plans within the corporate network . . . . . . . . . . . . . 185
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Make the ITG the first-choice, least-cost entry in the
route list block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185
Turn on Step Back on Congestion (SBOC) for the
ITG Trunk route . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185
Turn off ITG route during peak traffic periods on the
IP data network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186
ESN5 network signaling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186
Disable the ITG Trunk cards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191
Configure ITG Trunk data on MAT . . . . . . . . . . . . . . . . . . . . . . . . . . 191
Add an ITG Trunk node on MAT manually . . . . . . . . . . . . . . . . . . 192
Add a node and configure general node properties . . . . . . . . . . . . . 192
Set node locati on properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192
Single vs. separate subnets for T-LAN and E-LAN . . . . . . . . . . . . 193
Configure Network Connections . . . . . . . . . . . . . . . . . . . . . . . . . . 194
Configure card properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195
Configure DSP profiles for the ITG Trunk node . . . . . . . . . . . . . . 199
Configure SNMP Traps/Routing and IPs tab . . . . . . . . . . . . . . . . . 204
Configure Account ing server . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205
Set Security for MAT SNMP access . . . . . . . . . . . . . . . . . . . . . . . . 207
Exit node property configuration session . . . . . . . . . . . . . . . . . . . . 208
Create the ITG Trunk node dialing plan usi ng MAT . . . . . . . . . . . 208
Retrieve the ITG Trunk node dialing pl an us ing MAT . . . . . . . . . 213
Transmit ITG trunk card configuration data from
MAT to the ITG trunk cards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215
Before you can transmit configuration data . . . . . . . . . . . . . . . . . . 215
Setting the Leader 0 IP address . . . . . . . . . . . . . . . . . . . . . . . . . . . . 216
Transmit the node properties, card properties and
dialing plan to Leader 0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 218
Verify installation and configuration . . . . . . . . . . . . . . . . . . . . . . . 219
Observe ITG ISL trunk status in MAT . . . . . . . . . . . . . . . . . . . . . . 219
Transm it Card Properties an d Dialing Plan to Le ad er 1
and Follower cards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220
Set date and time for the ITG ISL Trunk node . . . . . . . . . . . . . . . . . . 222
Change the default ITG shell password to maintai n ac cess security . . 222
Change default ESN5 prefix for non-ESN5 IP telephony gateways . . 223
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Check card software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225
Transmit new software to ITG Trunk c ards . . . . . . . . . . . . . . . . . . 227
Upgrade the DCHIP PC Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 229
Configure MAT Alarm Manag em ent to receive SNMP
traps from ITG ISL Trunk cards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 231
Make test calls to the remote ITG nodes . . . . . . . . . . . . . . . . . . . . . . . 234
378
Upgrade an ITG Trunk 1.0 node to support ISDN
signaling trunks . . . . . . . . . . . . . . . . . . . . . . . . . . . . 235
Upgrade procedure summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 235
Before you begin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 236
Install the DCHIP hardware upgra de kit . . . . . . . . . . . . . . . . . . . . . . . 237
Install the DCHIP I/O Panel breakout cable from the upgrade kit . 239
Upgrade the 8-port ITG basic trunk software to
ITG ISL trunk software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 239
Step 1 - Remove ITG 1.0 configuration files . . . . . . . . . . . . . . . . . 240
Step 2 - Transmit ITG Trunk 2.0 software to the 8-port cards . . . . 241
Remove ITG 1.0 configu r ation data from Meridian 1 . . . . . . . . . . . . . 243
Configure the Meri dian 1 ITG ISL Trunk data:
upgrade considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 244
Verify ROM-BIOS version . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 245
Upgrade Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 245
MAT cannot refresh vie w ( Card not responding) . . . . . . . . . . . . . . 245
How to upgrade software using the ITG shell . . . . . . . . . . . . . . . . . 246
OA&M using MAT applications . . . . . . . . . . . . . . . 247
MAT OA&M procedure summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . 247
Delete a node . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 248
Database locking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 249
ITG Card Properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250
ITG Card Properties – Maintenance window . . . . . . . . . . . . . . . . . 250
ITG Card Properties – Confi guration window . . . . . . . . . . . . . . . . 252
DSP maintenance window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 252
D-channel maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 253
ITG Trunk 2.0 ISDN Signaling Link (ISL) Description, Installation and Operation
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Contents
Add Dialing Plan entries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 254
Transmit configuration data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 259
Add an ITG ISL Trunk node on MAT by retrieving an e xisting node 262
Retrieve and add an ITG ISL Trunk Node f or
administration purposes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 263
Retrieve and add an ITG ISL Trunk Node for maintenance
and diagnostic purposes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 265
Configuration audit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 266
Retrieve ITG configuration information from the ITG node . . . . . 266
Schedule and generate and view ITG OM reports . . . . . . . . . . . . . 268
Backup and restore operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . 268
Alarm Notification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 269
Meridian 1 system commands - LD 32 . . . . . . . . . . . . . . . . . . . . . . . . 270
Disable the indicated ITG card . . . . . . . . . . . . . . . . . . . . . . . . . . . . 272
Disable the indicated ITG card when idle . . . . . . . . . . . . . . . . . . . . 273
Disable an indicated ITG port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 273
Enable an indicated ITG card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 273
Enable an indicated ITG port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 273
Display ITG card ID information . . . . . . . . . . . . . . . . . . . . . . . . . . 274
Display ITG card status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 274
Display ITG card port status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 274
OA&M using the ITG shell CLI and overlays . . . . 275
ITG Shell OA&M procedure summary . . . . . . . . . . . . . . . . . . . . . . . . 275
Access the ITG shell through a maintenance port or Telnet . . . . . . . . 276
Connect a PC to card maintenance port . . . . . . . . . . . . . . . . . . . . . 276
Telnet to an ITG card through the MAT PC . . . . . . . . . . . . . . . . . . 277
Change the default ITG shell password to maintai n access security 278
Reset the default ITG shell password . . . . . . . . . . . . . . . . . . . . . . . 279
Down lo ad th e ITG o pe r at io nal mea su r ements
through the ITG shell . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 280
Reset the operational measurements . . . . . . . . . . . . . . . . . . . . . . . . 281
Display the number of DSPs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 281
Display ITG Node Properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 281
Transfer files through the command line interface . . . . . . . . . . . . . 282
Upgrade ITG card software from the command line interface . . . . 284
553-3001-202 Standard 1.00 April 2000
Contents Page 13 of
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Backup and restore from th e ITG command line interface . . . . . . . 287
Recover the SNMP community names . . . . . . . . . . . . . . . . . . . . . . 288
IP configuration commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 288
Download the ITG error log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 289
Meridian 1 system commands - LD 32 . . . . . . . . . . . . . . . . . . . . . . . . 289
Disable the indicated ITG card . . . . . . . . . . . . . . . . . . . . . . . . . . . . 291
Disable the indicated ITG card when idle . . . . . . . . . . . . . . . . . . . . 291
Disable an indicated ITG port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 291
Enable an indicated ITG card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 292
Enable an indicated ITG port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 292
Display ITG card ID information . . . . . . . . . . . . . . . . . . . . . . . . . . 292
Display ITG card status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 292
Display ITG card port status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 293
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 295
ITG Trunk 2.0 alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 296
System level maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 302
Access the ITG card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 303
ITG card overlay commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 303
MAT maintenance commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 305
Multi-purpose Serial Data Link (MSDL) commands . . . . . . . . . . . 305
Simple Network Management Protocol (SNMP) . . . . . . . . . . . . . . 306
TRACE and ALARM/LOG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 307
ITG shell command set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 307
ITG card self-tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 317
Card LAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 318
BIOS self-test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 318
Base code self-test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 318
Field-Programmable Gate Array (FPGA) testing . . . . . . . . . . . . . . 318
Upgrades . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 318
Application upgrade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 319
Maintenance or bug fix upgrade . . . . . . . . . . . . . . . . . . . . . . . . . . . 319
Capacity upgra des . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 319
Flash storage upgrades . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 319
Protocol table upgrade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 319
ITG Trunk 2.0 ISDN Signaling Link (ISL) Description, Installation and Operation
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Contents
Software upgrade mechanisms . . . . . . . . . . . . . . . . . . . . . . . . . . . . 319
Replace an I TG card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 321
Check card software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 324
Transmit card properties and dialing plan . . . . . . . . . . . . . . . . . . . . 325
Backup and restore procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 325
ITG card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 325
MAT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 326
Command line interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 326
Fault clearance procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 326
DSP failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 326
Card failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 327
DCH failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 327
ITG Trunk 2.0 faceplate maintenance display codes . . . . . . . . . . . . . . 329
Appendix A: Cable description and
NT8D81BA cable replacement . . . . . . . . . . . . . . . . 333
NTMF94EA E - LAN, T - LAN and Serial Port cable . . . . . . . . . . . . 333
NTCW84KA E-LAN, T-LAN, DCH & Serial cable . . . . . . . . . . . . . . 336
NTAG81CA Faceplate Maintenance cable . . . . . . . . . . . . . . . . . . . . . 338
NTAG81BA Maintenance Extender cable . . . . . . . . . . . . . . . . . . . . . 340
NTCW84EA DCH PC Card Pigtail cable . . . . . . . . . . . . . . . . . . . . . . 341
NTMF04BA MSDL extension cable . . . . . . . . . . . . . . . . . . . . . . . . . . 343
NTCW84LA and NTCW84MA upgrade cables . . . . . . . . . . . . . . . . . 345
Prevent ground loops on connection to external
customer LAN equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 349
Replace cable NT8D81BA with NT8D81AA . . . . . . . . . . . . . . . . . . . 350
Tools list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 351
NT8D81BA cable removal procedures . . . . . . . . . . . . . . . . . . . . . . . . 351
Install NTCW84JA filter and NT8D81AA cable . . . . . . . . . . . . . . 352
Appendix B: Environmental and
electrical regulatory data . . . . . . . . . . . . . . . . . . . . 353
Environmental specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 353
553-3001-202 Standard 1.00 April 2000
Contents Page 15 of
Mechanical conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 354
Electrical regulatory standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 355
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 355
Electromagnetic Compatibility (EMC) . . . . . . . . . . . . . . . . . . . . . . 355
378
Appendix C: Subnet mask conversion
from CIDR to dotted decimal format . . . . . . . . . . . 357
Appendix D: Configure a Netgear RM356
modem router for remote access . . . . . . . . . . . . . 359
Security features of the RM356 modem router . . . . . . . . . . . . . . . . 359
Install the RM356 mod em r outer . . . . . . . . . . . . . . . . . . . . . . . . . . 360
Configure the MAT ITG PC to communic ate with a
remote Meridian 1 site via modem router . . . . . . . . . . . . . . . . . . . . 361
Configure the RM356 m odem router by the manager menu . . . . . . 361
RM356 modem router manager menu
(applicat ion notes on Meridian 1 E-LAN instal lation) . . . . . . . . . . 366
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 375
ITG Trunk 2.0 ISDN Signaling Link (ISL) Description, Installation and Operation
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Contents
553-3001-202 Standard 1.00 April 2000
18
About this guide
This document is a global document. Contact your s ystem supplier or your
Nortel Networks representative to verify that the hardware and software
described is suppo rted in your area.
This guide describes and explains how to engine er, install, configure,
administer and maintain a Meridian Internet Telephony Gateway (ITG)
Trunk 2.0 system.
The ITG Trunk 2.0 compresses PCM voice, demodulat es Group 3 fax, routes
the packetized data over a private internet, or intranet and provides virtual
analog ISDN signalli ng link (ISL) TIE trunks between Meridia n 1 ESN
nodes.
ITG Trunk 2.0 routes voice traffic over existing private IP network facilities
with available und er-us ed bandwidth on the private Wide Area network
(WAN) backbone.
Page 17 of
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ITG Trunk 2.0 ISDN Signaling Link (ISL) Description, Installation and Operation
Page 18 of
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About this guide
553-3001-202 Standard 1.00 April 2000
70
Description
The Meridian Internet Telephony Gateway (ITG) Trunk 2.0 suppor ts ISDN
Signaling Link (ISL) IP trunks on the NT0961 24-port Meridian Internet
Telephony Gateway (ITG) trunk card. It also supports ISL IP Trunks on the
NTCW80 8-port ITG 1.0 trunk card that have been upgraded with IT G Trunk
2.0 software and hardware.
An ISDN Signaling Link D-channel (ISL DCH) provides DCH connectivity
to the Meridian 1 and signaling control for the 24 ports on the card and any
additional ports on other ITG Trunk cards in the same node. The DCH
connection expands the signaling path between the Meridian 1 and the
gateway. I TG all ows Meridi an 1 systems to b e net worke d usi ng I SDN, while
transmitting H.323 signaling and voice over a standard IP protocol st ac k.
The ITG ISL Trunk compresses voice and demodulates Group 3 Fax. ITG
then routes the packetized data over a pr ivate IP n etwork for co nnections
between Meridian 1 nodes, bypassing circu it-switched trunking facilities.
The ITG ISL Trunk delivers an ISDN signaling interface between the
Meridian 1 and the Voice and Fax over IP (VoIP) interface. The high
signaling bandwi dth of t his ISDN interfac e expa nds the feat ure function ality
for VoIP trunks. It provi des, for exa mple, Calli ng Line Identi fic ation (CLID)
and Call Party Name Display (CPND).
Page 19 of
378
To insta ll th e ITG ISL Tru nk, th e custo mer mus t hav e a corpo rate IP networ k
with managed bandwid th ca pac ity, and routers available for WAN
connectivi ty between networked Meridia n 1 systems. Best VoIP performance
is obtained with a QoS-m anaged network.
LAN connection of the ITG ISL Trunk requires 10BaseT or 100BaseTX
Ethernet interfaces for VoIP and 10BaseT for management and D-Channel
signaling . Ther e is no restriction on the phys ical medium of the WAN.
ITG Trunk 2.0 ISDN Signaling Link (ISL) Description, Installation and Operation
Page 20 of
378
Descripti on
Non-compressing G.711 codecs require 100BaseT Ethernet network
connectivi ty. A 10/100Ba seT auto sensing Etherne t inte rface ro utes the VoIP
traffic from the ITG ISL Trunk cards. Signaling between cards and
communication wit h th e Meridi an Admin istra tion T ools (MAT ) PC is ove r a
10BaseT Ethernet connection. The MAT applic ation manages the ITG ISL
Trunk.
Figure 1 shows an ITG ISL Trunk configuration ex ample.
Figure 1
ITG ISL Trunk connectivity
Meridi an 1
t
DSP
DCHIP + Fol lowers
DCH
northern
telecom
ITG ISDN IP Trunk
Meridian 1 to IP network, providing
poin t t o multi-point co n n e c tio n
H.323
tandems
IP Network
I
T
G
2
Meridian 1
Meridi an 1
I
T
G
2
I
T
G
2
Meridian 1
northern
telecom
Meridian 1
northern
telecom
Meridi an 1
Meridi an 1
Note: In this document, T-LAN refers to the Telephony LAN that
transmits the ITG voi ce and fax traffic. E-LAN (embedded LAN) refers
to the management and signaling LAN for the Meridian 1 site.
ITG ISL Trunk depen ds on the manage d IP networ k, not the Internet, be cause
the managed IP network can provid e adequa te late ncy, ji tt er, and pac ket los s
performance to support VoIP with an acceptable voic e quality.
553-3001-202 Standard 1.00 April 2000
northern
telecom
553-9340
System requirements
ITG is avai lable f or Meri dian 1 op tions 11C , 11C Min i, 51 C, 61C, 81 and 81C
systems running X11 relea se 25 or later software. See Table 1, “Software
packages for Meridian 1 ITG ISL Trunk,” on page 22 for required software
packages.
ITG requires MAT 6.6 or lat er incl uding Alarm Ma nagement. MAT Common
Services include the Meridian Internet Telephony Gateway applications.
Customers must have the NTAK02BB (minimum vintage) SDI/DCH card
(Option 11C) or MSDL card (Lar ge Sys tems) fo r ISDN Sign aling capabi lity.
If the customer does not have either of these cards, or does not have an
available DCH port on them, the cus tom er m us t order these cards to support
ISDN functionality.
A modem router must be installed on the E-LAN in order to provide remote
support access for ITG Trunk and othe r IP -ena bled Nortel Networks
products. The Nort el Net works Netg ear RM356 m odem router inte grate s the
functions of a V.90 modem, a PP P remote access server, an IP router, and a
4-port 10BaseT Ethernet hub, and provides a range of security features that
must be configured to comply with the customer's data network security
policy. The Netgear RM356 modem router can be ordered through many
electronic equipment retail outlets.
Descripti on Page 21 of
378
Customers with ITG Trunk 1.0 Basic Per Trunk Signaling 8-Port IT G trunk
cards have the option of upgrad ing t o ITG Trunk 2.0 ISDN Signali ng tr unks.
Port capacity remains 8 ports per card. 8 and 24-Port cards can be mixed in
the same ITG ISL Trunk no de. The se ction “U pgrade an IT G Trunk 1. 0 nod e
to support ISDN signaling trunks” on page 235 describes the upgrade.
ITG Trunk 2.0 ISDN Signaling Link (ISL) Description, Installation and Operation
Page 22 of
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Descripti on
Table 1
Software packages for Meridian 1 ITG ISL Trunk
Package Package number Notes
Basic Al ternate Route Selection
57 or 58 Required
(BARS) or Network Alternate
Route Selection (NARS)
ISDN Base (ISDN) 145 Required
ISDN Signaling Link (I S L) 147 Required
MSDL 222 (large systems) Required
QSIG Interface (QSIG) 263 (large systems) Optional
QSIG GF Transport (QSIG GF) 305 (large systems) Optional
Advanced ISDN Network
148 Optional
Services (NTWK)
Coordinated Dia ling Plan
59 Optional
(CDP).
Flexib l e N u m b ering Plan (FN P) 160 Op tional
553-3001-202 Standard 1.00 April 2000
List of ITG ISDN components
Table 2 lists ITG ISDN components.
Note 1: MAT 6.6 or la ter, or OTM 1.0, includ ing the Common Services,
Alarm Management, and ITG ISDN appl ica tions, is a prerequisite and
must be ordered separ ately.
Note 2: Nortel Networks Netge ar RM35 6 Mod em Ro uter o r e quiv alent
is required for remote support and must be ordered separatel y from retail
outlets.
Note 3: You must ins pect the IPE modu le t o de ter mine i f it is eq uipp ed
with non-removable Molded Filter Connectors on the I/O Panel. For
Large Systems manufactured during the period of 1998-1999 and
shipped in North Americ a, the IPE modules have the NT8D81BA
Backplane to I/O Panel ribbon cable assembly with a non-removable
Molded Filter Connector. The NT8D81BA is compatible with 10BaseT
T-LAN, but if you require a 100B aseT T-L AN, you need to replace it
with the NT8D81AA Backplane to I/O Panel ribbon cable ass embly.
Table 2
Hardware components for Meridian 1 ITG ISL Trunk (Part 1 of 3)
Descripti on Page 23 of
378
Component Product codes
System Packages
ITG ISDN Signaling Trunk Large Systems P ackage
including D-Channel (NT0961AA 24-Port ITG ISL Trunk
with RTU and pre-in stalled software , I/O cables, DCH
PC card, 50-pin I/O Panel Filter connector with ITG
specific filtering for 100BaseTX, and NTP)
ITG ISDN Signaling Trunk Small Systems (Option 11C)
Pac kage including D-Channel (ITG Trunk 2.0 card with
RTU license and pre-installed software that supp orts 24
ports, required cables, DCH PC card, and NTP)
ITG ISDN Signaling Trunk Small and Large Systems
Pac kage without DCH PC Card or NTP
ITG Trunk 2.0 ISDN Signaling Link (ISL) Description, Installation and Operation
NTZC44AA
A0786079
NTZC44BA
A0786080
NTZC45AA
A0786081
Page 24 of
Table 2
Hardware components for Meridian 1 ITG ISL Trunk (Part 2 of 3)
Upgrade Packages
378
Descripti on
Component Product codes
Upgrade Kit for Large Systems from ITG Trunk 1.0 t o 2.0
(includes required cables, DCH PC card, and NTP)
Upgrade Kit f or Small Syst ems fr om ITG Trunk 1.0 to 2.0
(includes required cables, DCH PC card, and NTP)
Spare cards
Meridian ITG Trunk 2.0 card (24 ports)
(NT0961AA 24-Port ITG ISL Trunk with RTU and
pre-insta ll ed software)
Cables
E-LAN, T-LAN, RS232 and DCH Ports cable for the
NT0961AA 24-Port ITG ISL Trunk DCHIP card.
E-LAN, T-LAN, and RS232 Po r t s cable for the
NT0961AA 24-Port ITG ISL Trunk card
E-LAN, T-LAN, RS232 and DCH Ports cable for the
NTCW80CA 8-P ort ITG ISL Trunk DCHIP card
E-LAN, T-LAN, RS232 and DCH Ports cable for the
NTCW80AA 8-P ort ITG ISL Trunk DCHIP card
DCH PC Card Pigtail cable NTCW84EA
MSDL DCH cable (included in Large System package):
6 ft.
18 ft.
35 ft.
50 ft.
NTZC47AA
A0786085
NTZC47BA
A0786086
NT0961AA
A0786146
NTCW84KA
A0784208
NTMF94EA
A0783470
NTCW84LA
A0784437
NTCW84MA
A0789752
A0744403
NTND26AA
NTND26AB
NTND26AC
NTND26AD
50 ft. MSDL DCH Extender cable NTMF04AB
A0774842
553-3001-202 Standard 1.00 April 2000
Descripti on Page 25 of
Table 2
Hardware components for Meridian 1 ITG ISL Trunk (Part 3 of 3)
Component Product codes
10 ft. Inter cabinet cable NTCW84KA to SDI/DCH cable NTWE04AC
A0794156
1 ft. Intra cabinet cable NTCW84KA to SDI/DCH cable NTWE04AD
A0794157
378
Shielded four-port SDI/DCH cable for the NTAK02BB
SDI/DCH card (included in Small System package)
PC Maintenance cable (for faceplate RS232
maintenance port to local terminal access)
Maintenance Extender cable NTAG81BA
Large Systems filter connector
50 pin I/O Panel Filte r Connecto r Block wit h ITG speci fic
filtering for 100BaseTX (included in Lar ge Systems
package)
Backplane to I/O Panel rib bon cable assembly
compatibl e wit h NTCW84 JA I/O Panel Fil ter Connector
Block with ITG-specific filtering for 100BaseTX T-LAN
connection (r eplaces NT8D81BA Bac kplane to I/O Panel
ribbon cable assembly equipped with non-remov able
Molded Filter Connectors)
Documentation
Meridian Internet Telephony Gateway (ITG) Trunk
2.0/ISDN Signaling Link NTP
PC Cards
C7LIU DCH PC Card with Layer 2 DCH Software NTWE07AA
NTAK19FB
A0403450
NTAG81CA
A0655007
NTCW84JA
A0783483
NT8D81AA
A0359946
P0906569
A0794155
ITG Trunk 2.0 24-Po rt Software Upgrade on 8Mb ATA
Flash Rom PC Card
ITG Trunk 2.0 8-Port Software Upg rade on 8Mb ATA
Flash ROM PC Card
ITG Trunk 2.0 ISDN Signaling Link (ISL) Description, Installation and Operation
NT0963AA
A0786148
NT0962AA
A0786147
Page 26 of
378
Descripti on
Ordering rules and guidelines
Ordering rules for ITG ISL Trunk node initial configuration
Initial confi guration of an ITG ISL Trunk node requires either :
• one NTZC44AA ITG ISDN Large Systems package, or
• one NTZC44BA ITG ISDN Small Systems package,
as appropriate for your system. These packages include all Meridian 1
components neede d for a sin gle-ca rd node, except for the cable s that provi de
interface to the MSDL and SDI/DCH cards. DCH interface cables are
included:
• NTND26AA (Large Systems)
• NTAK19FB and NTWE04AD (Small Systems)
The following packages are requi red for ITG ISL Trunk:
• ISDN Base (ISDN) package 145
• ISDN Signaling Link ( I S L) pa ckage 147
MAT 6.6 or OTM 1.1 is required and must be ordered separately. The MAT
Alarm Notification application is not included with MAT 6.6 and must be
ordered separately.
For MSDL and DCHIP cards that reside in the same Large System UEM
equipment row, order:
• NTND26 MSDL DCH cable in sufficie nt length to reach from the MSDL
to the I/O Panel of the IPE module that contains the DCHIP.
For MSDL and DCHIP cards that reside in different Large System UEM
equipment rows in a multi-row La rge System, order:
• NTMF04BA MSDL DCH Extender (50 ft.) cable to reach between the
I/O Panels of the two UEM equipmen t rows.
For SDI/DCH and DCHIP cards that reside in different Small System
cabinets, orde r:
• NTWE04AC Inter c abinet cable (NTCW84KA to SDI/DCH cabl e-10 ft.)
553-3001-202 Standard 1.00 April 2000
Descripti on Page 27 of
If you are installing ITG ISL Trunk cards in IPE modules equipped with
NT8D81BA Backplane to I/O Panel ribbon cable assembly with Molded
Filter Connectors, and you are using 100BaseT X T-L A N, order:
• NT8D81AA Backplane to I/O Panel ribbon cable assembly compatible
with NTCW84JA Fi lter Connec tor Bl ock with IT G-spec if ic fi lt eri ng for
100BaseTX T-LAN connection.
Note: You must inspect the IPE module to determine if it is equipped
with Molded Filter Connectors on the I/O Panel. Molded Filter
Connectors were shipped in North Am erica during a period from 1998 to
1999. Molded Filter Connectors can be used with 10BaseT T-LAN
connections.
Ordering rules for ITG ISL Trunk node expansion
To expand an ITG ISL Trunk node requires:
• For each additional non-DCHIP card:
— one NTZC45AA ITG ISDN Small and Large Systems Package
without DCH PC Card or NTP.
• For each additional DCHIP ca r d , either:
— one NTZC44AA ITG ISDN Large Systems Package including
D-Channel, or
378
— one NTZC44BA ITG ISDN Small Systems (Option 11C) Package
including D-Channel,
as appropriate for your system. Make sure that there are sufficient DCH
ports on the MSDL or SDI/DCH cards and associated cables.
ITG Trunk 2.0 ISDN Signaling Link (ISL) Description, Installation and Operation
Page 28 of
378
Descripti on
Sparing ratios for ITG Trunk components
Sparing ratios for selected components are as listed in Table 3.
Table 3
Sparing ratios
Component Sparing ratio
NT0961AA Spare Meridian Trunk ITG 2.0 card (24
ports) (for repair only -- no RTU license)
NTWE07AA C7LIU DCH PC Card with NTCW84EA
PC Card DCH Pigtail cable
I/O cable assemblies 20:1
ITG ISL Trunk card description
The ITG ISL Trunk card provides a cost-effective solution for high quality
voice and fax transmi ssions over an IP network.
The ITG ISL Trunk card is a two-slot, IPE-based assembly designed for
installation in a Meridian 1 IPE shelf. An ITG ISL Trunk card can have a
maximum of 24 ports. A Peripheral Component Interconnect (PCI)-base d
DSP daughterboard pr ovides voice processi ng and installs on the assembly.
The daughterboard compresses speech into packets and supplies the packets
to the IP network using a Pentium host processor.
The ITG ISL Trunk card monitors the IP network for delay (latency) and
packet loss . The car d rero utes n ew c alls t o t he al ternat e ci rcui t-swi tched trun k
routes if the Quality of Service (QoS) of the data network is not acceptable.
Customers can configure QoS parameters on the ITG ISL Trunk node to
make sure that the ITG Trunk route is not us ed for new calls if the network
QoS degrades be l ow an ac ce pt ab l e level.
10:1
10:1
Card roles
The ITG ISL Trunk card can have one or more of the following roles:
•Follower
• Active Leader
553-3001-202 Standard 1.00 April 2000
Descripti on Page 29 of
378
• Backup Leader
• D-channel IP gateway (DCHIP)
The ITG ISL Trunk card roles identify which systems are active
systems/standby systems and which are client systems. The Active Leader
has a Nod e IP a ddress on the v oice interf ace. T his Node IP is an al ias I P which
is added to the original IP address on the voice interface. Other machines in
the network use the Node IP to keep track of the Active Leader.
Each Meridian 1 is usually configured with the following:
• one ITG ISL Trunk card that acts as an Active Leader
• one ITG ISL Trunk card that acts as a Backup Leader
• at least one ITG ISL Trunk ca rd that provides DCHIP functionality
• one or more ITG ISL Trunk cards identified as Followers.
In the MAT ITG application, the te rm Leader 0 refers to the ITG ISL Trunk
card initially configured to perform the role of the Active Leader. The term
Leader 1 refers to the ITG ISL Trunk card that is initially configured to
perform the role of Backup Leader. The Active Leader and Backup Leader
exchange the Node IP addres s when the Active Leader goes out-of-service.
The term A ct iv e Lea de r i n di ca t es th e Lead e r 0 or the Le ad er 1 card that is
performing the Active Leader role.
Leader 0 or Leader 1 can have the Active Leader status. On system power-up,
Leader 0 normally functions as th e Active Leader and Leader 1 as the Ba ckup
Leader. At other times, the Leader card functions reverse with Leader 1
working as the Active Leader and Leader 0 working as the Backup Leader.
The Leader, Backup Leader, Follower, and DCHIP cards communicate
through their E-LAN connections.
Follower
A Follower card is an ITG ISL Trunk card which converts telephone signals
into data packets and data packets into te lephone sign als. Followe r cards also
provide dialed number to IP address transl ation.
ITG Trunk 2.0 ISDN Signaling Link (ISL) Description, Installation and Operation
Page 30 of
g
378
Descripti on
Active Leader
The Active Leader ca rd is an ITG ISL Trunk card that acts as a point of
contact for all other Meridian 1 in the network.
The Active Leader card is res ponsible for the following:
• distribute incoming H.323 cal ls to each registered Follower card in its
node, and balance l oad among the registered cards for inc omi ng IP calls
• IP addresses for other cards in its node
• work as a time server for all ITG ISL Trunk cards in its node
• perform network monitoring for outgoing calls in its node
• voice processing
All calls fr om a remote Meridian 1 ITG node are presented to the Active
Leade r car d. Th e L ea d er car d mai n tains a resou r ce table of al l th e ITG ISL
Trunk cards in it s node. The Act ive Leader card c onsults its internal Follower
card resource table to determine which Follower card has the most idle
channels. The Active Leader card selects this card to receive the new call. The
Active Leader sends a message to the se lected Follower card, informing it to
reserve a channe l for the ne w call. I t redire cts the ca ll to the sele cted Fol lower.
The Follower card performs dialed number to IP address translation.
Backup Leader
The Backup Leader card steps in when the Leader is out-of-service. This
minimizes service interruptions.
D-channel IP
The ITG ISL Trunk card with DCHIP functionality (DCHIP Card) is
connected by the RS-422 cable to the Multi-purpose Serial Data Link
(MSDL) card on the Meridian 1 large systems. It connects to the SDI/DCH
Card on small systems. The DCHIP Card is equipped with a DCH PC Card.
The DCH PC Card provides the RS-422 and LAPD functionality that is
required for the D-channel (DCH) inter f ac e to the Meridian 1. The DCHIP
Card is the network side of the Meridian 1 ISL D-channel connection. The
card is a ta ndem node in the s witch net work, prov iding a s ingle-to mul ti-poin t
interface betwe en the Meridian 1 and the IP network (see Figure 2).
553-3001-202 Standard 1.00 April 2000
ateway (DC HIP)
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