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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 Reserved
Printed in Canada
Information is subject to change without notice. Nortel Networks reserves the right to make changes in design
or components as progress in engineering and manufacturing may warrant. This equipment h
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4 378 Page 3 of Revision history April 2000 Standard, release 1.00. This is a global document and is issued for X11 Release 25.0x. ITG Trunk 2.0 ISDN Signaling Link (ISL) Description, Installation and Operation
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378 Page 4 of 553-3001-202 Standard 1.00 April 2000
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16 378 Page 5 of Contents 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 Tru
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378 Page 6 of Contents DTMF Through Dial . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52 Quality of Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 Quality of Service parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 Network performance utilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 E-Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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378 Contents Page 7 of Disable silence suppression at tandem nodes . . . . . . . . . . . . . . . . . 78 Simultaneous voice traffic with silence suppression . . . . . . . . . . . . 79 T-LAN traffic calculations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81 General LAN and WAN engineering considerations . . . . . . . . . . . 84 Fax engineering considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85 Configuration of Meridian 1 routes and network translation
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378 Page 8 of Contents 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 U
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378 Contents Page 9 of 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
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378 Page 10 of Contents 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 sign
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378 Contents Page 11 of Check card software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225 Transmit new software to ITG Trunk cards . . . . . . . . . . . . . . . . . . 227 Upgrade the DCHIP PC Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 229 Configure MAT Alarm Management to receive SNMP traps from ITG ISL Trunk cards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 231 Make test calls to the remote ITG nodes . . . . . . . . . .
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378 Page 12 of Contents Add Dialing Plan entries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 254 Transmit configuration data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 259 Add an ITG ISL Trunk node on MAT by retrieving an existing node 262 Retrieve and add an ITG ISL Trunk Node for administration purposes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 263 Retrieve and add an ITG ISL Trunk Node for maintenance and diagnostic purposes .
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378 Contents Page 13 of Backup and restore from the 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 . . . . . . . .
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378 Page 14 of Contents Software upgrade mechanisms . . . . . . . . . . . . . . . . . . . . . . . . . . . . 319 Replace an ITG card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 321 Check card software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 324 Transmit card properties and dialing plan . . . . . . . . . . . . . . . . . . . . 325 Backup and restore procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 325 ITG car
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378 Contents Page 15 of Mechanical conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 354 Electrical regulatory standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 355 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 355 Electromagnetic Compatibility (EMC) . . . . . . . . . . . . . . . . . . . . . . 355 Appendix C: Subnet mask conversion from CIDR to dotted decimal format . . . . . . . . . .
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378 Page 16 of Contents 553-3001-202 Standard 1.00 April 2000
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18 378 Page 17 of About this guide This document is a global document. Contact your system supplier or your Nortel Networks representative to verify that the hardware and software described is supported in your area. This guide describes and explains how to engineer, install, configure, administer and maintain a Meridian Internet Telephony Gateway (ITG) Trunk 2.0 system. The ITG Trunk 2.0 compresses PCM voice, demodulates Group 3 fax, routes the packetized data over a private internet, or
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378 Page 18 of About this guide 553-3001-202 Standard 1.00 April 2000
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70 378 Page 19 of Description The Meridian Internet Telephony Gateway (ITG) Trunk 2.0 supports 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 ITG 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 add
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378 Page 20 of Description Non-compressing G.711 codecs require 100BaseT Ethernet network connectivity. A 10/100BaseT autosensing Ethernet interface routes the VoIP traffic from the ITG ISL Trunk cards. Signaling between cards and communication with the Meridian Administration Tools (MAT) PC is over a 10BaseT Ethernet connection. The MAT application manages the ITG ISL Trunk. Figure 1 shows an ITG ISL Trunk configuration example. Figure 1 ITG ISL Trunk connectivity Meridian 1 I Meridian 1
