Nortel 50 Series User manual

Nortel Communication Server 1000
Nortel Communication Server 1000 Release 4.5
Main Office Configuration for Survivable
Remote Gateway 50
Configuration Guide
Document Number: 553-3001-207
Document Release: Standard 2.00
Date: January 2006
Year Publish FCC TM
Copyright © Nortel Networks Limited 2006
All Rights Reserved
Produced 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.
Nortel, Nortel (Logo), the Globemark, This is the Way, This is Nortel (Design mark), SL-1, Meridian 1, and
Succession are trademarks of Nortel Networks.
Title page

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Revision history
January 2006
Standard 2.00. This document is up-issued for CR Q01202736, with
information on reconfiguring Call Server alarm notification levels if
necessary when configuring Adaptive Network Bandwidth Management. See
pages 76 and 84.
August 2005
Standard 1.00. This document is a new document to support
Communication Server 1000 Release 4.5.

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553-3001-207 Standard 2.00 January 2006

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Contents
List of procedures . . . . . . . . . . . . . . . . . . . . . . . . . . 9
About this document . . . . . . . . . . . . . . . . . . . . . . . 11
Subject .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Applicable systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Intended audience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Conventions .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Related information .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Contents .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Survivable Remote Gateway .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Main office hardware description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Main office requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Optional features to enhance SRG functionality .. . . . . . . . . . . . . . . . . 21
Normal Mode and Local Mode overview . . . . . . . . . . . . . . . . . . . . . . . 22
Bandwidth Management Overview .. . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Capacity .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Branch office dialing plan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Cross reference for branch office and SRG50 terminology . . . . . . . . . 32
Setting up the main office . . . . . . . . . . . . . . . . . . . 35
Contents .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

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SRG information required by the main office . . . . . . . . . . . . . . . . . . . 36
Main office information required by the SRG . . . . . . . . . . . . . . . . . . . 37
Zone parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Branch office IP Phone configuration at the main office . . . . . . . . . . . 46
Bandwidth Management . . . . . . . . . . . . . . . . . . . . 49
Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Introduction .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Codec negotiation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Configuring Bandwidth Management parameters . . . . . . . . . . . . . . . . 56
Adaptive Network Bandwidth Management . . . . . . . . . . . . . . . . . . . . 67
Tandem Bandwidth Management overview . . . . . . . . . . . . . . . . . . . . . 93
Dialing Plan Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Network using Uniform Dialing Plan . . . . . . . . . . . . . . . . . . . . . . . . . . 96
Network using Coordinated Dialing Plan . . . . . . . . . . . . . . . . . . . . . . . 122
Alternative Call Routing for Network Bandwidth
Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127
Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127
Operating parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146
Feature interactions .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148
Feature packaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149
Feature implementation using Command Line Interface . . . . . . . . . . . 149
Feature implementation using Element Manager . . . . . . . . . . . . . . . . . 151
Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162
Feature operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166
Dialing Plan configuration . . . . . . . . . . . . . . . . . . . 167
Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167
Overview .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167

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On-net dialing plan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168
Off-net dialing plan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169
Routing calls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170
H.323 zones .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170
Zone-based digit manipulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171
Configuring PSTN access for SRG users in Normal Mode . . . . . . . . . 173
Dialing plan examples .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193
Emergency Services configuration . . . . . . . . . . . . 225
Contents .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225
Emergency Services Access (ESA) .. . . . . . . . . . . . . . . . . . . . . . . . . . . 226
Configuring the NRS for ESA SPN . . . . . . . . . . . . . . . . . . . . . . . . . . . 238
Testing the ESDN number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 238
Configuring ESA using Element Manager . . . . . . . . . . . . . . . . . . . . . . 239
Emergency Service using Special Numbers (SPN) .. . . . . . . . . . . . . . . 239
Enhanced UNIStim Firmware Download . . . . . . . . 241
Contents .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 241
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 241
Firmware upgrade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 242
Appendix A: Media Redirection Scenarios . . . . . . 245
List of terms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 251

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List of procedures
Procedure 1
Configuring ESN and SRG zones . . . . . . . . . . . . . . . . .40
Procedure 2
Configuring branch office IP Phones at the
main office using LD 11 . . . . . . . . . . . . . . . . . . . . . . . . . 47
Procedure 3
Printing intrazone and interzone statistics for
a zone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Procedure 4
Displaying CAC parameters for one or more
zones . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .85
Procedure 5
Provisioning Tandem Bandwidth Management . . . . . . 110
Procedure 6
Accessing the Zones web page . . . . . . . . . . . . . . . . . . . 152
Procedure 7
Printing zone ALTPrefix . . . . . . . . . . . . . . . . . . . . . . . . . 157
Procedure 8
Show Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160
Procedure 9
Enabling a zone’s branch office behavior . . . . . . . . . . 163

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Procedure 10
Suppress Alternative Call Routing for
NBWM alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165
Procedure 11
Configuring the main office . . . . . . . . . . . . . . . . . . . . . . 175
Procedure 12
Configuring the NRS database . . . . . . . . . . . . . . . . . . . 184
Procedure 13
Configuring the branch office . . . . . . . . . . . . . . . . . . . . 187
Procedure 14
Testing PSTN access using an SRG IP Phone . . . . . . . 192
Procedure 15
Configuring the main office . . . . . . . . . . . . . . . . . . . . . . 231
Procedure 16
Configuring the branch office zone . . . . . . . . . . . . . . . . 237
Procedure 17
Testing ESDN using an SRG telephone . . . . . . . . . . . . 238
Procedure 18
Upgrading firmware . . . . . . . . . . . . . . . . . . . . . . . . . . . . 243

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About this document
This document is a global document. Contact your system supplier or your
Nortel representative to verify that the hardware and software described are
supported in your area.
Subject
This document describes the Main Office Configuration for the Survivable
Remote Gateway 50: Configuration Guide (553-3001-207). Information in
this document complements information found in documents in the
Communication Server 1000 documentation suite, as listed in “Related
information” on page 13.
For information about how to configure the SRG50, see SRG50
Configuration Guide at http://www.nortel.com. Select Support &
Training > Technical Documentation Communication Servers >
Enterprise Communication Servers > Communication Server 1000S and
search for SRG.
Note on legacy products and releases
This NTP contains information about systems, components, and features that
are compatible with Nortel Communication Server 1000 Release 4.5
software. For more information about legacy products and releases, click the
Technical Documentation link under Support & Training on the Nortel
home page:
http://www.nortel.com

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553-3001-207 Standard 2.00 January 2006
Applicable systems
This document applies to the following systems:
• Communication Server 1000S (CS 1000S)
• Communication Server 1000M Chassis (CS 1000M Chassis)
• Communication Server 1000M Cabinet (CS 1000M Cabinet)
• Communication Server 1000M Half Group (CS 1000M HG)
• Communication Server 1000M Single Group (CS 1000M SG)
• Communication Server 1000M Multi Group (CS 1000M MG)
• Communication Server 1000E (CS 1000E)
Note: When upgrading software, memory upgrades may be required on
the Signaling Server, the Call Server, or both.
Intended audience
This document is intended for individuals responsible for configuring the
main office for Survivable Remote Gateway for organizations using CS 1000
systems.
Conventions
Terminology
In this document, the following systems are referred to generically as
“system”:
• Communication Server 1000S (CS 1000S)
• Communication Server 1000M (CS 1000M)
• Communication Server 1000E (CS 1000E)
•Meridian1
The following systems are referred to generically as “Small System”:
• Communication Server 1000M Chassis (CS 1000M Chassis)

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• Communication Server 1000M Cabinet (CS 1000M Cabinet)
The following systems are referred to generically as “Large System”:
• Communication Server 1000M Half Group (CS 1000M HG)
• Communication Server 1000M Single Group (CS 1000M SG)
• Communication Server 1000M Multi Group (CS 1000M MG)
Related information
This section lists information sources that relate to this document.
NTPs
The following NTPs are referenced in this document:
•Converging the Data Network with VoIP (553-3001-160)
•Electronic Switched Network: Signaling and Transmission Guidelines
(553-3001-180)
•Dialing Plans: Description (553-3001-183)
•Signaling Server: Installation and Configuration (553-3001-212)
•IP Peer Networking: Installation and Configuration (553-3001-213)
•Branch Office: Installation and Configuration (553-3001-214)
•Optivity Telephony Manager: Installation and Configuration
(553-3001-230)
•Software Input/Output: Administration (553-3001-311)
•Emergency Services Access: Description and Administration
(553-3001-313)
•Optivity Telephony Manager: System Administration (553-3001-330)
•Element Manager: System Administration (553-3001-332)
•IP Line: Description, Installation, and Operation (553-3001-365)
•ISDN Primary Rate Interface: Features (553-3001-369)
•Basic Network Features (553-3001-379)

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553-3001-207 Standard 2.00 January 2006
• SRG50 Configuration Guide
•Communication Server 1000M and Meridian 1: Small System Planning
and Engineering (553-3011-120)
•Communication Server 1000M and Meridian 1: Large System Planning
and Engineering (553-3021-120)
•Communication Server 1000S: Planning and Engineering
(553-3031-120)
•Communication Server 1000E: Planning and Engineering
(553-3041-120)
•Software Input/Output: Maintenance (553-3001-511)
Online
To access Nortel documentation online, click the Technical Documentation
link under Support & Training on the Nortel home page:
http://www.nortel.com
CD-ROM
To obtain Nortel documentation on CD-ROM, contact your Nortel customer
representative.

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Overview
Contents
This section contains information about the following topics:
Survivable Remote Gateway. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Main office hardware description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Main office requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Optional features to enhance SRG functionality. . . . . . . . . . . . . . . . . . 21
Normal Mode and Local Mode overview . . . . . . . . . . . . . . . . . . . . . . . 22
Capacity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Branch office dialing plan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Cross reference for branch office and SRG50 terminology . . . . . . . . . 32
Survivable Remote Gateway
The Survivable Remote Gateway (SRG) extends CS 1000 features from a
main office to one or more remote SRG locations (branch offices). The
SRG50 Release 1.0 operates with the CS 1000 running Release 4.5 and is
backward compatible to Release 3.0 and Release 4.0. SRG does not operate
with CS 1000 Release 1.0 and Succession 1000 2.0 systems.
In addition to the SRG 1.0 model, which is positioned as the lower cost
alternative to the Media Gateway 1000B product, there is a new “mini” model
for the smaller branch office, known as the SRG50. The SRG50 is optimized
for the 5-32 user branch office.

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The SRG is implemented on a BCM50 platform and is connected to a
CS 1000 at the main office over a LAN or a WAN. This configuration allows
the call processing for the IP Phones at the SRG site to be centralized at the
main office. The Call Server at the main office provides the call processing
for the IP Phones in both the main office and branch offices. The SRG
provides call processing functionality to telephones in local mode and local
analog devices. The SRG also provides digital and analog trunk access to the
local Public Switched Telephone Network (PSTN).
In order for devices in the CS 1000 network to access analog devices at the
SRG or to access the PSTN at the SRG, virtual trunks are used over the LAN/
WAN.
If the main office fails to function, or if there is a network outage, the SRG
provides service to the telephones located at the branch office. This enables
the IP Phones to survive the outage between the branch office and the main
office.
The SRG is designed to work with a main office only if the main office and
the SRG use a common dialing plan. Any other configuration is not
guaranteed to work reliably. Since the Call Server and the SRG handle dialing
slightly differently, ensure that any settings you use for the main office, that
need to interact with the SRG, can be accommodated by the SRG call
processing.
Figure 1 on page 17 shows the networking among the main office, SRG, and
IP Phones.

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Figure 1:
SRG network
Main office hardware description
The main office must be one of the following systems:
• CS 1000S
• CS 1000E
• CS 1000M Cabinet
• CS 1000M Chassis
• CS 1000M HG
• CS 1000M SG
• CS 1000M MG
Note: Throughout this document, references to CS 1000 systems
encompass all CS 1000 system types.
The diagrams throughout this documentation show a CS 1000S main office.
All of the systems appearing in the list perform identical main office
functions as far as the SRG is concerned. For information about the SRG,
refer to SRG50 Configuration Guide.

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Signaling Server
The Signaling Server is required at the main office only. It provides the
following functions:
• Terminal Proxy Server (TPS)
— The TPS provides a connection from the IP Phones to the Call
Server. It also provides a connection path from a virtual trunk to the
Call Server.
• Web server for Element Manager and Network Routing Service (NRS)
Manager
A second Signaling Server can be used to provide redundancy in the case of
failure in the primary Signaling Server at the main office.
A similar function to the Signaling Server exists at the SRG.
The Signaling Server supports both en bloc and overlap signaling. En bloc
signaling is standard. If overlap signaling is to be used, Nortel recommends
that it be installed and enabled on all Signaling Servers in the network. Failure
to do so results in delays in call completion due to overlap to en bloc
conversion.
For more information about the Signaling Server, refer to Signaling Server:
Installation and Configuration (553-3001-212). For more information about
H.323 and overlap signaling, refer to IP Peer Networking: Installation and
Configuration (553-3001-213).
Network Routing Service
• The NRS application provides network-based routing, combining the
following into a single application:
•H.323 Gatekeeper — provides central dialing plan management and
routing for H.323-based endpoints and gateways.
Note: NRS also contains SIP Redirect Server but SIP Trunks are not
supported on an SRG.

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•NRS Database — stores the central dialing plan in XML format for the
H.323 Gatekeeper. The H.323 Gatekeeper accesses this common
endpoint and gateway database.
•Network Connect Server (NCS) — used only for Media Gateway
1000B (MG 1000B), SRG, Geographic Redundancy and Virtual Office
solutions. The NCS allows the Line TPS (LTPS) to query the NRS using
the UNIStim protocol.
•NRS Manager web interface — the NRS provides its own web
interface to configure the H.323 Gatekeeper and the NCS.
The NRS application provides routing services to H.323 devices. The H.323
Gatekeeper can be configured to support H.323 routing services. The H.323
Gatekeeper can reside on the same Signaling Server.
Each system in an IP Peer network must register to the NRS. The NRS
software identifies the IP addresses of systems based on the network-wide
numbering plan. NRS registration eliminates the need for manual
configuration of IP addresses and numbering plan information at every site.
When configuring the NRS it is necessary to enable the NCS. Ensure that the
check box “Network Connection Server enabled” is checked in the NRS
configuration window of CS 1000 Element Manager.
For information about configuring the NRS, refer to IP Peer Networking:
Installation and Configuration (553-3001-213).
Telephones
The SRG supports the following telephones:
• IP Phone 2001
• IP Phone 2002
• IP Phone 2004
• IP Phone 2007
• IP Softphone 2050
• Mobile Voice Client (MVC) 2050

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• Analog (500/2500-type) telephones
• WLAN Handset 2210/2211
Note: Throughout this document, the IP Phones in this list are referred
to collectively as IP Phones.
Main office requirements
The branch office requires the following at the main office:
• CS 1000 hardware, running Succession 3.0, CS 1000 Release 4.0, or
CS 1000 Release 4.5.
• IP Peer H.323 Trunk (H323_VTRK) package 399. This package is
required to support H.323 functionality. Package 184 is included with
package 399.
• The main office must have a software Service Level of 2 or higher to
work with the branch office.
• Ensure that you have ordered enough IP user and Virtual Trunk licenses
at the main office to support the SRG50 or the capacity of your branch
office.
The main office requires the following software packages to support the
specified Basic Network features. Refer to Basic Network Features (553-
3001-379) for more information about these features.
• Network Call Back Queuing (MCBQ) package 38. This package is
required for SRG IP Phones to invoke any queuing feature or ringback
when free.
• Network Speed Call (NSC) package 39. This package is required for
SRG IP Phones to invoke the Network Speed Call feature.
The main office requires the following software packages to support the
specified ISDN Primary Rate Interface features. Refer to ISDN Primary Rate