Nortel 1000 Con?guration guide User manual

Nortel Communication Server 1000
DASS2 Fundamentals
Release: 7.0
Document Revision: 04.01
www.nortel.com
NN43001-571
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Nortel Communication Server 1000
Release: 7.0
Publication: NN43001-571
Document release date: 4 June 2010
Copyright © 2007-2010 Nortel Networks. All Rights Reserved.
While the information in this document is believed to be accurate and reliable, except as otherwise expressly
agreed to in writing NORTEL PROVIDES THIS DOCUMENT "AS IS" WITHOUT WARRANTY OR CONDITION OF
ANY KIND, EITHER EXPRESS OR IMPLIED. The information and/or products described in this document are
subject to change without notice.
Nortel, Nortel Networks, the Nortel logo, and the Globemark are trademarks of Nortel Networks.
All other trademarks are the property of their respective owners.
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3
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Contents
New in this Release 7
Features 7
Other changes 7
Revision history 7
How to get help 9
Getting help from the Nortel Web site 9
Getting help over the telephone from a Nortel Solutions Center 9
Getting help from a specialist by using an Express Routing Code 10
Getting help through a Nortel distributor or reseller 10
Introduction 11
Subject 11
Applicable systems 11
Intended audience 12
Related information 12
Overview 15
Contents 15
Introduction 15
Application principles 17
Channels 19
Interworking with other signaling systems 21
Numbering plans for DASS2 routes 22
Hardware requirements 35
Contents 35
DASS2 hardware requirements 35
Basic configuration 41
Contents 41
Introduction 41
Configuring basic capabilities 44
Configuring call charging information 53
Configuring Calling Line Identity 53
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Attendant Through Dialing Networkwide 55
Contents 55
Introduction 55
Operating parameters 57
Feature interactions 58
Feature packaging 59
Feature implementation 60
Feature operation 61
DASS2/DPNSS1 INIT Call Cut Off 63
Contents 63
Introduction 63
Operating parameters 64
Feature interactions 64
Feature packaging 64
Feature implementation 65
Feature operation 65
Virtual Network Services in the UK with DASS2/DPNSS1
Bearers 67
Contents 67
Feature description 67
Operating parameters 67
Feature interactions 68
Feature packaging 71
Feature implementation 72
Feature operation 75
Integrated Digital Access (IDA) equipment 77
Contents 77
DASS2 hardware requirements 77
NT5K35, NT5K75 and NT6D11AE DCHI cards 83
NT8D72 PRI 85
NT5D97AD Dual-port DTI2/PRI2 card 87
Hardware required for DDP2 configuration 111
Clock Controller 113
Schematics 114
Cabling requirements 117
DCHI installation and removal 123
Contents 123
Setting up the NT5K35 123
Setting up the NT5K75 127
Setting up the NT6D11AE/AF 132
Installing the DCHI 138
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Removing the DCHI 139
Setting up the NTAG54AA 140
NTAG54 installation and removal 140
PRI installation and removal 143
Contents 143
Non DPRI 143
NT5D97AD Dual-port DTI2/PRI2 installation and removal 148
Clock Controller installation and removal 161
Contents 161
Setting up the QPC775 161
QPC441 3PE card switch settings 163
Installing or replacing the QPC775 or NTRB53 onHalf Group and Single Group
Systems 164
Installing or replacing the QPC775 or NTRB53 on Multi Group System 165
IDA status check and start-up 171
Contents 171
Description 171
IDA status check 172
IDA start-up 173
IDA trunk maintenance commands and messages 174
Clock synchronization 176
Clock Controller maintenance commands 176
Resident fault monitoring 177
Diagnostic error messages 179
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DASS2 Fundamentals
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DASS2 Fundamentals
NN43001-571 04.01 4 June 2010
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7
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New in this Release
The following sections detail what’s new in DASS2 Fundamentals
(NN43001-571) for Communication Server 1000 Release 7.0:
Features For Communication Server Release 7.0, the range of allowable Route List
Index (RLI) and Digit Manipulation Index (DMI) values is increased from
0–999 to 0–1999. For more information about RLI and DMI values, see
Table 35 "LD 86 Configure the VNS trunk route." (page 74).
Other changes
See the following sections for information about changes that are not
feature-related:
Revision history
June 2010 Standard 04.01. This document is up-issued to support
Communication Server 1000 Release 7.0.
May 2009 Standard 03.01. This document is up-issued to support
Communication Server 1000 Release 6.0.
December 7, 2007 Standard 02.01. This document is up-issued to support
Communication Server 1000 Release 5.5.
June 2007 Standard 01.02. This document is up-issued to remove the Nortel
Networks Confidential statement, and for changes in technical
content, including . the section Configuring Calling Line Identity.
May 30, 2007 Standard 01.01. This document is issued to support
Communication Server 1000 Release 5.0 This document
contains information previously contained in the following legacy
document, now retired: DASS2 (553-3001-371). No new content
has been added for Communication Server 1000 Release 5.0.
All references to Communication Server 1000 Release 4.5 are
applicable to Communication Server 1000 Release 5.0.
July 2006 Standard 4.00. This document is up-issued for changes in
technical content, including descriptions and range values for
new overload protection counters.
Nortel Communication Server 1000
DASS2 Fundamentals
NN43001-571 04.01 4 June 2010
Copyright © 2007-2010 Nortel Networks. All Rights Reserved.
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8New in this Release
August 2005 Standard 3.00. This document is up-issued for Communication
Server 1000 Release 4.5.
September 2004 Standard 2.00. This document is up-issued for Communication
Server 1000 Release 4.0.
October 2003 Standard 1.00. This document is a new NTP for Succession 3.0.
It was created to support a restructuring of the Documentation
Library, which resulted in the merging of multiple legacy NTPs.
This new document consolidates information previously contained
in the following legacy documents, now retired:
•DASS2 Product Overview Guide (553-3911-100)
•DASS2 Installation Guide (553-3911-200)
•DASS2 Features and Services Guide (553-3911-300)
•DASS2 Maintenance Guide (553-3911-500)
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DASS2 Fundamentals
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9
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How to get help
This chapter explains how to get help for Nortel products and services.
Getting help from the Nortel Web site
The best way to get technical support for Nortel products is from the Nortel
Technical Support Web site: www.nortel.com/support
This site provides quick access to software, documentation, bulletins, and
tools to address issues with Nortel products. From this site, you can:
•download software, documentation, and product bulletins
•search the Technical Support Web site and the Nortel Knowledge Base
for answers to technical issues
•sign up for automatic notification of new software and documentation
for Nortel equipment
•open and manage technical support cases
Getting help over the telephone from a Nortel Solutions Center
If you do not find the information you require on the Nortel Technical
Support Web site, and you have a Nortel support contract, you can also
get help over the telephone from a Nortel Solutions Center.
In North America, call 1-800-4NORTEL (1-800-466-7835).
Outside North America, go to the following Web site to obtain the
telephone number for your region:
www.nortel.com/callus
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DASS2 Fundamentals
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10 How to get help
Getting help from a specialist by using an Express Routing Code
To access some Nortel Technical Solutions Centers, you can use an
Express Routing Code (ERC) to quickly route your call to a specialist in
your Nortel product or service. To locate the ERC for your product or
service, go to:
www.nortel.com/erc
Getting help through a Nortel distributor or reseller
If you purchased a service contract for your Nortel product from a
distributor or authorized reseller, contact the technical support staff for that
distributor or reseller.
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DASS2 Fundamentals
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Introduction
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 The DASS2 document provides:
•information on DASS2 components and functionality, including
features, application protocols, hardware components and schematics,
hardware and software requirements
•procedures to install and administer features through overlay
programs, and to maintain DASS2 links
•lists of applicable system error messages
Legacy products and releases
This document contains information about systems, components, and
features that are compatible with Nortel Communication Server 1000
Release 7.0. For more information about legacy products and releases,
click the Technical Documentation link under Support & Training on the
Nortel home page:
www.nortel.com
Applicable systems
This document applies to the following systems:
•Communication Server 1000M Single Group (CS 1000M SG)
•Communication Server 1000M Multi Group (CS 1000M MG)
•Communication Server 1000E (CS 1000E)
Note: When you upgrade software, you may also require memory
upgrades on the Signaling Server, the Call Server, or both.
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DASS2 Fundamentals
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Copyright © 2007-2010 Nortel Networks. All Rights Reserved.
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12 Introduction
System migration
When you upgrade Meridian 1 systems to run Communication Server
1000 7.0 software and configure them to include a Signaling Server,
they become Communication Server 1000 systems. Table 1 "Meridian 1
systems to CS 1000 systems" (page 12) lists each Meridian 1 system that
supports an upgrade path to a Communication Server 1000 system.
Table 1
Meridian 1 systems to CS 1000 systems
This Meridian 1 system Maps to this CS 1000 system
Meridian 1 PBX 11C Chassis CS 1000E
Meridian 1 PBX 11C Cabinet CS 1000E
Meridian 1 PBX 61C CS 1000M Single Group
Meridian 1 PBX 81C CS 1000M Multi Group
For more information, see one or more of the following documents:
•Communication Server 1000M and Meridian 1: Large System Upgrade
Procedures (NN43021-458)
•Communication Server 1000E: Upgrade Procedures (NN43041-458)
•Communication Server 1000E Upgrade - Hardware Upgrade
Procedures (NN43041-464)
Intended audience
The intended audience of this document is as follows:
•network data managers, design personnel, marketing personnel, and
anyone requiring information about DASS2
•network data administrators and technicians responsible for DASS2
connections
•individuals responsible to install DASS2 networks
•technical staff responsible to maintain DASS2 networks
Related information
This section lists information sources that relate to this document.
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DASS2 Fundamentals
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Related information 13
NTPs
The following NTPs are referenced in this document:
•Features and Services (NN43001-106)
•Software Input/Output: Administration (NN43001-611)
•Software Input/Output: Maintenance (NN43001-711)
Online
To access Nortel documentation online, click the Technical
Documentation link under Support & Training on the Nortel home page:
www.nortel.com
CD-ROM
To obtain Nortel documentation on CD-ROM, contact your Nortel customer
representative.
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DASS2 Fundamentals
NN43001-571 04.01 4 June 2010
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14 Introduction
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15
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Overview
Contents This section contains information on the following topics:
“Feature implementation” (page 72)
“Application principles” (page 17)
“Channels” (page 19)
“Interworking with other signaling systems” (page 21)
“Numbering plans for DASS2 routes” (page 22)
IntroductionBritish Telecom’s Digital Access Signaling System No.2 (DASS2) is the
signaling protocol defined for PBX access to the Integrated Services Digital
Network (ISDN). In the United Kingdom, DASS2 provides:
•digital access to (U.K.) ISDN for voice and data calls
•supplementary facilities, such as Call Charge Indication and Calling
Line Identity
•TIE line user-to-user signaling facility, allowing semi-permanent private
networking connections to be established between PBXs, via ISDN
Note: DASS2 is supported only in the Media Gateway 1000S (MG
1000S) and the Option 11C. It is not supported in the MG 1000S
Expansion or Option 11C Expander.
DASS2 is the standard UK protocol for 2Mbit/s connections between PBXs
and British Telecom’s ISDN. In keeping with the product development
philosophy of Nortel, full interworking is provided between DASS2 and the
following signaling interfaces:
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DASS2 Fundamentals
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16 Overview
•Q.931 MCDN interface
•Q.931 public ISDN access interface
•DPNSS1 private networking interface
DASS2 is specified in terms of the International Standards Organization
(ISO) reference model for Open Systems Interconnection (OSI). Level
1 (Physical) of the model is a 2.048 Mbit/s digital interface and level 2
(Data Link) is the Link Access Protocol (LAP) defined for DASS2. Level 3
(Network) is the message layer unique to DASS2. Figure 1 "How the OSI
Model works" (page 16) illustrates the OSI model.
Figure 1
How the OSI Model works
Each layer in the model depends on the services offered by the layer
below it and, in turn, builds on those services to perform a specific set of
communication functions. Protocols are the mechanism by which each
layer accomplishes its communication functions. It then offers these
functions to the layer above it in the form of its own set of services. Note
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DASS2 Fundamentals
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Application principles 17
that, while services are used between layers within a signaling entity
(switch), protocols operate within the same layer of the OSI model but
between different signaling entities.
The OSI layering approach effectively divides the complex task of
communication between network signaling entities into a series of more
easily manageable pieces, each of which can be modified without affecting
the other pieces. This allows more flexible evolution and compatibility with
the ongoing standards activities.
Figure 2 "The structure of the OSI Model together with the functions of
each layer" (page 17) shows the structure of the OSI Model and describes
the functions of each layer.
Figure 2
The structure of the OSI Model together with the functions of each layer
Application principles
Transmission system
The 2.048 Mbit/s digital transmission is divided into 32 timeslots,
numbered 0-31. Timeslots 1-15 and 17-31 provide 30 traffic channels.
Timeslot 0 is used as a synchronization channel. DASS2 is a
message-based signaling system that uses a common signaling channel
in timeslot 16. Each traffic channel has an associated LAP. The LAPs
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DASS2 Fundamentals
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18 Overview
operate in parallel over the signaling channel. Various messages are
defined; each message has mandatory data elements and may include
additional optional information.
Note: British Telecom (BT) numbers the traffic channels 1-30 (that
is, timeslot 17 and LAP 17 are associated with traffic channel 16), but
in the implementation the timeslot numbers are used to number the
traffic channels.
Each traffic channel, together with its LAP, represents one trunk and can
be used for a call independently of the other channels for an incoming or
outgoing call.
Each 2.048 Mbit/s link must be connected to an ISDN local public
exchange. Some channels on the link may be configured to support the
TIE Line Signaling facility, which allows a DPNSS1 connection to be
established between PBXs through the public ISDN.
Link designation
The ends of each inter-PBX link are labelled arbitrarily A and B, and the
ends of each DASS2 channel are designated X and Y. The X end has
priority if both ends attempt to use the channel at the same time.
PBX functions
A PBX that connects a DASS2 channel to or from a non-DASS2 device
is termed an end PBX. If that device is a trunk, then the PBX is termed a
gateway. A PBX connecting two DASS2 channels is a transit.
Configuration of trunks
DASS2 trunks are configured using the same route and member method
used for other trunks, thus:
•Any number of routes may be associated with the same link.
•A route may be associated with any number of links.
•Each route member must be assigned to one channel.
•Not all channels need to be associated with members. These
non-associated channels cannot, however, be used for calls.
•Members and channels must be numbered separately.
•Members are screened for outgoing calls using a linear search
(Sequential Line) or round robin (Cyclic Line). For DASS2 links, a
linear search should be used.
•Each route may be configured only for incoming calls, only for outgoing
calls, or for both.
•Each route must be configured with DASS2 channels only.
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Channels 19
Figure 3 "A typical DASS2 system configuration" (page 19) shows a
typical DASS2 system configuration with a Q.931-to-DASS2 gateway, a
DPNSS1-to-DASS2 gateway, and the major public exchange types to
which DASS2 connectivity is supported.
Figure 3
A typical DASS2 system configuration
Channels Within the DASS2 intelligent networking environment, a channel is a circuit
that carries information between two PBXs via digital links. There are two
types of channels — Bearer channels (B-channels) and Data channels
(D-channels). The Bearer Channel (B-channel) is a digital trunk route
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20 Overview
carrying data/voice information — call processing signaling information is
not carried over a B-channel. Voice and data transmission over DASS2
links is done at a rate of 64 Kbit/s. There may be up to 30 B-channels per
D-channel.
The Data Channel (D-channel) carries call processing information
between PBXs for the associated B-channels (call set-up and tear-down
information, network feature activation information). The format is a High
Level Data Link Control frame. For DASS2 applications, the D-channel
must be a 64 Kbit/s digital channel. It may exist on the same or different
carrying medium as the B-channels that it supports. One D-channel may
support up to 30 B-channels.
Refer to Figure 4 "Channel configurations for DASS2" (page 20) for a
depiction of how channels are typically configured for a DASS2 system.
Figure 4
Channel configurations for DASS2
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