RAD Data comm LRS-24 User Manual
LRS-24
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12-slot Link Access Rack with SNMP
Version 3.00
Installation and Operation Manual
Notice
This manual contains information that is proprietary to RAD Data Communications. No part of this
publication may be reproduced in any form whatsoever without prior written approval by RAD Data
Communications.
No representation or warranties for fitness for any purpose other than what is specifically mentioned in
this manual is made either by RAD Data Communications or its agents.
For further information contact RAD Data Communications at the address below or contact your local
distributor.
RAD Data Communications
Headquarters
12 Hanechoshet Street
Tel Aviv 69710 Israel
Tel: 972-3-6458181
Fax: 972-3-6498250
E-mail: rad@rad.co.il
© 2000 RAD Data Communications Publication No. 695-211-08/00
RAD Data Communications
US East
900 Corporate Drive
Mahwah, NJ 07430 USA
Tel: (201) 529-1100
Fax: (201) 529-5777
E-mail: market@radusa.com
RAD Data Communications
US West
3631 South Harbor Boulevard
Suite 250
Santa Ana, CA 92704
Tel: (714) 850-0555
Fax: (714) 850-1555
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Warranty
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This RAD product is warranted against defects in material and workmanship for a period of one year
from date of shipment. During the warranty period, RAD will, at its option, either repair or replace
products which prove to be defective. For warranty service or repair, this product must be returned to
a service facility designated by RAD. Buyer shall prepay shipping charges to RAD and RAD shall pay
shipping charges to return the product to Buyer. However, Buyer shall pay all shipping charges, duties
and taxes for products returned to RAD from another country.
Limitation of Warranty
The foregoing warranty shall not apply to defects resulting from improper or inadequate maintenance
by Buyer, Buyer-supplied firmware or interfacing, unauthorized modification or misuse, operation
outside of the environmental specifications for the product, or improper site preparation or
maintenance.
Exclusive Remedies
The remedies provided herein are the Buyer’s sole and exclusive remedies. RAD shall not be liable for
any direct, indirect special, incidental, or consequential damages, whether based on contract, tort, or
any legal theory.
Safety Warnings
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SEE INSTALLATION INSTRUCTIONS BEFORE CONNECTING TO THE SUPPLY!
The exclamation point within a triangle is intended to warn the operator or
service personnel of operation and maintenance factors relating to the
product and its operating environment which could pose a safety hazard.
Always observe standard safety precautions during installation, operation and maintenance of this
product. Only a qualified and authorized service personnel should carry out adjustment, maintenance
or repairs to this instrument. No adjustment, maintenance or repairs should be performed by either the
operator or the user.
Telecommunication Safety
1. The unit should be installed within 1.5m (5 feet) of a grounded, easily accessible AC outlet, or in
an adequately earthed rack mount. If the protective earth connection is not guaranteed by the
mains supply, the unit must be externally connected to a reliable protective earth. DC powered
units must be connected only to power sources which conform to the relevant safety standard.
2. In order to guarantee an uninterrupted flow of air stream, leave at least 15 mm spacing above
and below the top and bottom sides of the unit. The recommended maximum temperature of the
surrounding area is 40°C.
3. Vacant slots must always be covered with blank covers. This is necessary in order to guarantee a
definite cooling stream of air and to prevent unintentional and unauthorized access inside the
equipment.
4. The safety status of the ports on the LRS-24 is declared according to EN 41003 and is detailed in the
table below. Interconnection of these ports with other apparatus should be made so that the
equipment continues to comply with the requirements of EN 60950 connection of SELV and TNV
circuits to other circuits after such a connection is made.
Ports Safety Status
V.24, V.35, V.36, X.21, RS-530,
Unbalanced E1, E&M
Baseband modems, ISDN,
Balanced E1, T1, HDSL
FXS TNV-2 Circuit whose normal operating voltage exceeds
FXO, Ports with remote power
feeding (phantom)
SELV Circuit operating with Safety Extra-Low Voltage
TNV-1 Circuit whose normal operating voltage is within
the limits of SELV, on which overvoltages from
Telecommunications Networks are possible.
the limits of SELV, on which overvoltages from
Telecommunications Networks are not possible.
TNV-3 Circuit whose normal operating voltage exceeds
the limits of SELV, on which overvoltages from
Telecommunications Networks are possible.
Additional conditions concerning the safety of connection to telecommunication networks:
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• The unit must be earthed prior to connection to telecommunication networks.
• The signal ground of the SELV circuits is connected at the factory to the protective earth.
Interrupting this connection may invalidate the safety of the connection to unprotected
telecommunication networks in certain locations where permanent excessive voltages are
present on the lines.
In order to comply with the requirements set out in EN 60950 for TNV-3 circuits, the maximum
•
phantom supply voltage must not exceed 120 VDC. The remote power feeding supply must be
floating and must comply with the requirements for TNV-3 circuits.
DC powered units must be powered from EN 60950 or UL-1950 approved power source. In
•
order to avoid a fire hazard, a suitable fuse or circuit breaker must be installed on the
non-earthed DC line.
Regulatory Information
FCC-15 User Information
This equipment has been tested and found to comply with the limits of the Class A digital device,
pursuant to Part 15 of the FCC rules. These limits are designed to provide reasonable protection
against harmful interference when the equipment is operated in a commercial environment. This
equipment generates, uses and can radiate radio frequency energy and, if not installed and used in
accordance with the instruction manual, may cause harmful interference to the radio communications.
Operation of this equipment in a residential area is likely to cause harmful interference in which case
the user will be required to correct the interference at his own expense.
Warning per EN 55022
This is a Class A product. In a domestic environment, this product may cause radio interference, in
which case the user may be required to take adequate measures.
LRS-PS-FEED Output Voltage
The output voltage of the LRS-PS-FEED exceeds the limits of TNV-3 circuits. In the event of uncertainty
about the regulatory status of connecting such voltages to leased lines provided by certain service
providers, consult with a safety engineer.
Declaration of Conformity
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Manufacturer’s Name: RAD Data Communications Ltd.
Manufacturer’s Address: 12 Hanechoshet St.
Tel Aviv 69710
Israel
declares that the product:
Product Name: LRS-24
Conforms to the following standard(s) or other normative document(s):
EMC: EN 55022 (1994) Limits and methods of measurement of radio disturbance
characteristics of information technology equipment.
EN 50082-1 (1992) Electromagnetic compatibility - Generic immunity
standards for residential, commercial and light industry.
Safety: EN 60950/A4 Safety of information technology equipment, including
electrical business equipment.
Supplementary Information:
The product herewith complies with the requirements of the EMC Directive 89/336/EEC and the
Low Voltage Directive 73/23/EEC. The product was tested in a typical configuration.
Tel Aviv, March 19th, 2000
Haim Karshen
VP Quality
European Contact: Rad Data Communications GmbH, Berner Strasse 77, 60437, Frankfurt am Main, Germany
Quick Start Guide
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If you are familiar with LRS-24, use this guide to prepare it for operation. Choose
the section appropriate to the version of LRS-24 you are using.
1. LRS-24 with CM-1 Module
This section contains the startup instructions for LRS-24 with the CM-1 module.
Power-On
➤ To turn the power on:
1. Set the ON/OFF switches on the panels of the LRSI-PSP** modules to ON.
2. Supply the DC power, as applicable.
➤ To supply external phantom feed voltages:
1. Turn on LRS-24.
2. Turn on the source (for example, LRS-PS-FEED).
Normal Indications
• PS Module(s): All the indicators on the panel(s) of the PS module(s) must light
in green to indicate proper operation.
• CM-1 Module: The POWER indicator of the module must light. The TD and
RD indicators may flash (or may light steadily) when a management session is
in progress.
LRS-24 with CM-2 Module 1
Quick Start Guide LRS-24 Installation and Operation Manual
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2. LRS-24 with CM-2 Module
This section contains the startup instructions for LRS-24 with the CM-2 module.
Power-On
➤ To turn the power on:
1. Set the ON/OFF switches on the panels of the LRSI-PSP** modules to ON.
2. Supply the DC power, as applicable.
➤ To supply external phantom feed voltages:
1. Turn on LRS-24.
2. Turn on the source (for example, LRS-PS-FEED).
Normal Indications
• PS Module(s): All the indicators on the panel(s) of the PS module(s) must light
in green to indicate proper operation.
• CM-2 Module: The POWER indicator of the module must light. The TD and
RD indicators may flash (or light steadily) when a management session is in
progress.
Normally, the STAT/ADD display shows the two least significant digits of the
management number assigned to LRS-24. For normal startup, a rotating red circle
is displayed. However, if a problem is detected during the power-up self-test, you
will see a flashing error code (E1 through E9).
Preliminary Configuration
Perform preliminary configuration on the LRS-24 hub (see Chapter 4).
2 LRS-24 with CM-2 Module
Contents
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Chapter 1. Introduction
1.1 Overview .......................................................................................................... 1-1
General ...................................................................................................................1-1
Versions...................................................................................................................1-3
Application..............................................................................................................1-3
Features...................................................................................................................1-4
1.2 Physical Description .......................................................................................... 1-6
Chassis Description..................................................................................................1-6
LRS-24 Module Slots..............................................................................................1-10
1.3 Functional Description .................................................................................... 1-11
Power Supply (PS) Modules ...................................................................................1-11
Common Logic Modules........................................................................................1-12
Management .........................................................................................................1-13
I/O (User) Modules ................................................................................................1-14
1.4 Technical Specifications .................................................................................. 1-14
Chapter 2. Installation and Setup
2.1 Introduction...................................................................................................... 2-1
Mechanical Data......................................................................................................2-1
2.2 Site Requirements and Prerequisites.................................................................. 2-4
AC Power ................................................................................................................2-4
DC Power................................................................................................................2-4
Grounding...............................................................................................................2-4
Interface Module Handling Precautions....................................................................2-4
Module Handling Precautions..................................................................................2-5
Front Clearance .......................................................................................................2-5
Ambient Requirements ............................................................................................2-5
Cooling....................................................................................................................2-5
2.3 Unpacking the Chassis ...................................................................................... 2-5
2.4 Installation and Setup........................................................................................ 2-6
PS Modules .............................................................................................................2-6
CM-1 Module..........................................................................................................2-8
CM-2 Module........................................................................................................2-12
2.5 Interfaces and Connections ............................................................................. 2-15
PS Interface Modules .............................................................................................2-16
LRSI-F-CM1...........................................................................................................2-17
LRSI-F-1-CM2 / LRSI-B-1-CM2 Interface Modules with 10BaseT.............................2-18
LRSI-F-2-CM2 Interface Module with 10Base2.......................................................2-21
LRS-24 Enclosure...................................................................................................2-24
2.6 Initial Operation and Basic Checks.................................................................. 2-27
LRS-24 with CM-1 Module ....................................................................................2-27
LRS-24 with CM-2 Module ....................................................................................2-28
LRS-24 Installation and Operation i
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Chapter 3. Management via the CM-1 Module
3.1 Introduction...................................................................................................... 3-1
CM-1 Functions.......................................................................................................3-1
Management Capabilities.........................................................................................3-1
3.2 Hardware Requirements ................................................................................... 3-2
Terminal Characteristics ...........................................................................................3-2
Management RS-232 Port Interface Characteristics...................................................3-2
Connecting the Terminal..........................................................................................3-2
3.3 Operating the CM-1 Supervision Terminal ........................................................ 3-4
General ...................................................................................................................3-4
Configuring the Terminal .........................................................................................3-4
Performing Preliminary Configuration.......................................................................3-5
Configuring Individual Modules................................................................................3-5
Chapter 4. Management via the CM-2 Module
4.1 Introduction...................................................................................................... 4-1
CM-2 Module Capabilities .......................................................................................4-1
CM-2 Functions.......................................................................................................4-2
Handling of Management Communication...............................................................4-3
Management Priorities .............................................................................................4-4
Preliminary Configuration Activities..........................................................................4-4
Initializing CM-2 ......................................................................................................4-5
4.2 Hardware Requirements ................................................................................... 4-6
Terminal Characteristics ...........................................................................................4-6
RS-232 Supervisory Port Interface Characteristics .....................................................4-7
Terminal Connection Methods.................................................................................4-7
Connection of Management Station ........................................................................4-7
4.3 CM-2 Supervision Terminal Language ............................................................. 4-11
General .................................................................................................................4-11
Index of Commands ..............................................................................................4-12
4.4 Supervision Terminal Operating Instructions.................................................... 4-13
General .................................................................................................................4-13
Configuring the Terminal .......................................................................................4-13
Changing the Password ..........................................................................................4-14
Preliminary Configuration ......................................................................................4-14
Configuring Individual Modules..............................................................................4-14
Configuration by SNMP Network Management Stations .........................................4-15
Transferring Control to the Supervision Terminal ....................................................4-15
Chapter 5. Troubleshooting and Diagnostics
5.1 Alarms............................................................................................................... 5-1
5.2 Diagnostic Tests ................................................................................................5-1
5.3 Troubleshooting ................................................................................................ 5-1
5.4 Error Messages .................................................................................................. 5-2
ii LRS-24 Installation and Operation
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Appendix A. Connector Wiring
Appendix B. LRS-PS-FEED Power Supply
Appendix C. SNMP Management
Appendix D. CM-2 Management Commands
List of Figures
1-1. Backbone Data Distribution up to Customer’s Premises............................................. 1-3
1-2. Management of Local and Remote Distribution Nodes .............................................. 1-4
1-3. LRS-24B 3-D View ....................................................................................................1-7
1-4. LRS-24B Enclosure ....................................................................................................1-8
1-5. LRS-24F 3-D View..................................................................................................... 1-9
1-6. LRS-24F Enclosure................................................................................................... 1-10
1-7. LRS-24F Enclosure, Typical Front View.................................................................... 1-11
1-8. Basic Management Configuration for LRS-24 with CM-2 Modules ........................... 1-14
2-1. LRS-24F Mechanical Diagram.................................................................................... 2-2
2-2. LRS-24B Mechanical Diagram ................................................................................... 2-3
2-3. PS Module Panels...................................................................................................... 2-7
2-4. Module CM-1 Front Panel......................................................................................... 2-9
2-5. Module CM-1, Internal Jumpers .............................................................................. 2-10
2-6. Module CM-2 Front Panel....................................................................................... 2-12
2-7. Module CM-2, Internal Jumpers .............................................................................. 2-14
2-8. LRSI-F-PSP/230/114 and LRSI-F-PS/48 Interface Module Panels ..............................2-17
2-9. Typical LRSI-F-CM1 Interface Module Panel............................................................ 2-18
2-10. LRSI-F-1-CM2 / LRSI-B-1-CM2 Interface Module Panel with 10BT ........................2-19
2-11. Interface Module LRSI-F-1-CM2 with UTP Connector, Internal Jumpers ................ 2-20
2-12. LRSI-F-2-CM2 Interface Module Panel with 10B2 ................................................. 2-22
2-13. Interface Module LRSI-F-2-CM2 with BNC Connectors, Internal Jumpers .............. 2-23
3-1. Typical Direct Connection of Supervision Terminal ................................................... 3-3
3-2. Typical Connection of Supervision Terminal Through Modem Link ........................... 3-4
4-1. Typical Direct Connection of Supervision Terminal ................................................... 4-8
4-2. Typical Connection of Supervision Terminal Through Modem Link ........................... 4-8
4-3. Typical Connection of Supervision Terminal Through Slip ......................................... 4-9
4-4. Typical Connection to Network Management Station .............................................. 4-10
4-5. Password Menu Screen ........................................................................................... 4-14
4-6. JP15 Settings............................................................................................................ 4-14
5-1. Error Indicators..........................................................................................................5-2
LRS-24 Installation and Operation iii
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List of Tables
2-1. PS Modules, Front Panel Indicators............................................................................ 2-7
2-2. Module CM-1, Front Panel Components ................................................................... 2-9
2-3. Module CM-1 Jumper Settings................................................................................. 2-11
2-4. Module CM-2, Front Panel...................................................................................... 2-13
2-5. Module CM-2 Jumper Settings................................................................................. 2-15
2-6. PS Interface Module Types ...................................................................................... 2-16
2-7. Management 10BT Ethernet LEDs ............................................................................2-19
2-8. LRSI-F-1-CM2 Module Jumper Settings.................................................................... 2-21
2-9. LRSI-F-2-CM2 Interface Module Jumper Settings ..................................................... 2-23
2-10. CM-2 Module STATION CLK Connector, Pin Allocation........................................ 2-26
2-11. CM-1 Module Management RS-232 Pin Allocation................................................. 2-27
4-1. Terminal Command Set Index for CM-2 Module ...................................................... 4-12
4-2. Terminal Command Set Index for CM-2 Module (Cont.) ......................................... 4-13
5-1. Front Panel Indicator Displays ................................................................................... 5-2
5-2. Error Messages........................................................................................................... 5-3
iv LRS-24 Installation and Operation
General
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Chapter 1
Introduction
This chapter describes the basic physical and functional features of the LRS-24
modem rack, as well as some typical applications. The following topics are
discussed:
• Overview
• Physical Description
• Functional Description
• Technical Specifications.
1.1 Overview
LRS-24 is a high-density SNMP managed modem chassis. The chassis has 12 slots
that accommodate up to 24 modems. Using modular interface cards, LRS-24 can
support xDSL, fiber or baseband modems in the same chassis under a single
management application.
Supporting different modem technologies enables a wide range of data-rates,
starting from 1.2 kbps in IDSL modems, through 2 Mbps with HDSL/fiber
modems, and up to 43 Mbps using fiber modems. This also enables ranges from
4.8 km at
2 Mbps over copper to 100 km over fiber modems.
LRS-24 is available in two different physical hub versions: LRS-24B (ANSI) or
LRS-24F (ETSI).
All cards can be replaced or cables removed during operation, without causing
interference to data transmission to/from other cards in the chassis.
Modular data interfaces allow modem connectivity via a wide range of data
interfaces. These include: V.24, V.35, X.21, RS-530, V.36, G.703 codirectional,
E1, built-in Ethernet bridge, or built-in IP router.
LRS-24 accepts a system clock via the DB-15 connector placed on the CM-2 card.
Overview 1-1
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Management/CM-2 functions
LRS-24 is managed by a UNIX-based or PC-based SNMP management system via
the Central Management card (CM-2). The software is user-friendly,
GUI-based and runs under PC/Windows (RADview-PC) or HP OpenView
(RADview-HPOV) systems. Configuration and monitoring are also provided via
TELNET or ASCII terminal.
Network management provides centralized control of all LRS-24 hubs, modem
cards and remote modems in the network, including interface configuration,
connection setup, alarm and monitoring. A single management station can control
up to 64,000 LRS-24 hubs.
Direct 10BaseT Ethernet connection enables real-time management of central and
remote sites. Performance information is available in graph and table format for
the last 24 hours. This information can be saved in a file for accounting purposes.
If a major alarm occurs, the LRS-24 CM-2 card can dial out through an external
dial-up modem to a central management site. This saves a direct connection to
remote sites, while providing alerts if critical events occur. In addition alarms can
activate dry contacts. The dry contacts are placed on the system clock connector
on CM-2.
Two types of modem cards are available on the LRS-24:
• S-Mode: Cards with a built-in SNMP agent
• I-Mode: Cards without an SNMP agent. For these cards CM-2 serves as the
SNMP proxy agent. The CM-2 built-in agent complies with SNMP MIB II and
supports generic SNMP HPOV applications.
A new software version can be downloaded from a remote site onto the CM-2 via:
• LAN by TFTP protocol
• Terminal by XMODEM.
CM-2 saves up to three software versions.
When the management station includes BootP software, the CM-2 card
automatically retrieves the IP address required for management connection. This
eliminates the need to configure IP addresses for new hub installations.
LRS-24 can also be managed from an ASCII terminal. It allows all functions of
SNMP except for GUI interface. The connection is made via a V.24 supervisory
port using SLIP or PPP protocol.
Telnet support enables terminal connection over any IP network.
The CM-2 panel includes an alphanumeric display with two characters used for
alerting on fault conditions and for the hub IP address.
1-2 Overview
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Power Supplies
LRS-24 operates with single or dual, AC or DC power supplies. Each power supply
supports a full LRS-24 hub, including modem cards. Redundant power supply can
be replaced during operation, without affecting system performance
(hot-swapping).
Cards in the LRS-24 chassis are capable of providing remote power feeding for
repeaters and remote standalone modems. To provide remote power feeding
order a separate standalone power supply, LRS-PS-FEED.
Versions
Two different physical versions of the LRS-24 hub are available:
• ANSI −−−− card insertion, LEDs and switches are at the front, but cable
connections are at the rear of the hub. This compact, 4U high unit complies
with the American ANSI standard. Cards can be hot-swapped without
removing cables.
• ETSI −−−− card insertion, LEDs, switches and cable connections are at the front.
This version is 30 cm high (almost 6U), and complies with European ETSI
standard. Cards can be hot-swapped without removing cables.
Application
Figure 1-1 shows an application of Backbone Data Distribution up to Customer’s
Premises.
SNMP
Management
Station
HDSL
HCD-E1
LRS-24
MSDSL
IDSL
Fiber
Fiber
ASMi-51
ASMi-31-2
FOMi-E1/T1
FOMi-E3
HSSI
Router
PAB X
PAB X
Figure 1-1. Backbone Data Distribution up to Customer’s Premises
Figure 1-2 shows an application of Management of Local and Remote Distribution
Nodes.
Overview 1-3
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Central
Management
Station
PBX
PBX
PBX
Features
PSTN
ADM or Frame
Relay Switch
MP2100
Router
Backbone
ADM or
Frame Relay
Switch
Local SNMP
Management
Station
Modem Router
LRS-24
LRS-24
Switch
OP-XL
LRS-24
Dial-up
Modem
LRS-24
LRS-24
Figure 1-2. Management of Local and Remote Distribution Nodes
LRS-24 is a high-density, fully modular design with front-panel access to all the
functions. It supports up to 48 user modules in addition to redundant power
supply and management access modules.
It combines different technologies in a centrally-managed rack: DSL, fiber and
baseband.
Switch
LRS-24 offers single-point management access to the individual equipment
modules installed in the hub, and to the remote equipment units connected by
links to these modules. LRS-24 supports SNMP management, as well as
management by means of an ASCII terminal. No special software is required for
the terminal, which is controlled by the management software of the modules
installed in LRS-24.
Clock signals are distributed from an external source (station clock) to all the
equipment modules installed in the hub.
There is a standard set of regulated supply voltages. Power supply redundancy
ensures continuous availability of power.
The unit supports remote (phantom) feed of equipment connected to LRS-24.
The mechanical design separates user hardware modules from interface
(connector) modules, facilitates maintenance tasks.
The form factor is suitable for installation in standard 300 mm and 600 mm
ETSI racks; can be easily adapted for installation in 19" racks.
The flexible modular construction and management capabilities that are available
for the equipment installed in LRS-24 enable the user to easily configure individual
systems for specific requirements and applications.
1-4 Overview
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Remote Management
The modem cards in the LRS-24 can be remotely managed by the
RADview-HPOV SNMP management system, the PC-based RADview-PC/MDM
management system or by a dumb terminal. The same RADview application can
manage the LRS-24, modems in the hub and other RAD products.
Audible and visual indicators provide status of alarms and tests at the network,
card and port levels, and include all links connected to the hub. Alarms are
automatically logged and presented upon request, unless otherwise masked.
RADview-HPOV SNMP Management System
Both electrical and fiber optic modem cards can be managed by the
RADview-HPOV SNMP management system. All cards in the hub, except for
ASM-40CD, have remote control abilities for monitoring and/or controlling remote
units, and several types of cards contain an internal SNMP agent. In some cases,
managed cards can work opposite non-manageable modems.
RADview-HPOV management is available for modules with or without integrated
SNMP agent, via the SNMP Control Module (CM-2). The RADview-HPOV station
is connected to LRS-24 via an integrated Ethernet connection on the CM-2
module; CM-2 acts as a proxy SNMP agent for those cards without an agent.
RADview-PC/MDM Management System
The RADview-PC/MDM management station communicates with LRS-24 using
out-of-band communication via Ethernet.
The RADview-PC/MDM has a windows-based Graphical User Interface (GUI)
platform for LAN and WAN networks. The graphical user interface allows
configuration with easy-to-use operations on graphical representations of the hub.
The configuration can be performed at the port, card, hub and network levels.
Management by Dumb Terminal
LRS-24 can also be managed from a dumb terminal. Control Module CM-1 is used
for ASCII terminal management of modules with SNMP agent on-board, such as
HTU-E1C.
Clock
Both control modules, CM-1 and CM-2, have a station clock connection enabling
clock distribution to all cards, so that all cards can be synchronized to the same
station clock. Refer to the specific card operation manual for a description of
station clock support.
Power Supplies
LRS-24 operates with single or dual power supplies: AC or DC. Each power supply
supports a full rack of cards of any combination. The redundant power supply can
be replaced during operation, without affecting the system performance
(hot- swapping).
Overview 1-5
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1.2 Physical Description
Chassis Description
There are two different physical versions of LRS-24: LRS-24B and LRS-24F.
LRS-24B ANSI UNIT
LRS-24B is a modular chassis suitable for installation in standard ANSI racks. It has
a height of 200 mm (4U). The chassis has physical slots arranged on the front and
back sides:
• The front side accepts 4U-high functional modules (the modules that perform
the various processing functions).
• The back side accepts 2U-high interface modules which contain the
connectors used to access the modules on the front side.
Figure 1-3 shows a 3-dimensional view of LRS-24B.
1-6 Physical Description
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O
Rear View
Front View
Figure 1-3. LRS-24B 3-D View
Figure 1-4 shows the LRS-24B enclosure with the Interface Modules, User
Modules, Control Logic Module, and Power Supply Module.
Physical Description 1-7
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Interface Modules
LRS-24B Rear Section
1-8 Physical Description
User Modules
Control Logic
Module
Power Supply
(PS)
LRS-24 Front Section
Figure 1-4. LRS-24B Enclosure
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LRS-24F ETSI UNIT
LRS-24F is a modular chassis suitable for installation in standard ETSI racks, having
a height of 300 mm (6U). The chassis has physical slots arranged in two rows:
• The lower row accepts 4U-high functional modules (the modules that perform
the various processing functions).
• The top row accepts 2U-high interface modules, which contain the connectors
used to access the modules in the lower row. The interface modules enable
the connection of cables from the front side, and thus functional modules can
be easily removed for maintenance without disconnecting cables.
Figure 1-5 shows a 3-dimensional view of LRS-24F.
Figure 1-5. LRS-24F 3-D View
O
LRS-24F Enclosure
Figure 1-6 shows the LRS-24F enclosure including User Modules and Interface
Modules, Control Logic module, and Power Supply module.
Physical Description 1-9
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Interface Modules
LRS-24 Module Slots
The LRS-24F enclosure has a lower section for the functional modules and a top
section for interface modules. The LRS-24B enclosure has a front section for the
functional modules and a rear section for interface modules.
Each section has 15 module slots:
• Two slots are reserved for PS modules.
• One slot is reserved for the common logic module (CM-1 or CM-2).
• The other 12 slots are intended for user (I/O) modules. Each I/O slot can
accept any type of I/O module. The modules are inserted from the front side.
The top section of LRS-24F (back section of LRS-24B) includes slots for the
interface modules.
Front View
User Modules
CONTROL LOGIC
Module
Power Supply
(PS)
Figure 1-6. LRS-24F Enclosure
1-10 Physical Description
Figure 1-7 shows a typical front view of the LRS-24F enclosure, and identifies the
slots and their use. Note the labels that designate the type of module that can be
installed in each slot.
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1
2
DCE-1
DCE-2
I/O12
POWER
TD1
RD1
RTS1
DCD1
SYNC LOSS
1 2
TEST
1 2
ERR1
ASM-40CD
TD2
RD2
RTS2
DCD2
ERR2
1
2
DCE-1
DCE-2
I/O11
POWER
TD1
RD1
RTS1
DCD1
SYNC LOSS
1 2
TEST
1 2
ERR1
ASM-40CD
TD2
RD2
RTS2
DCD2
ERR2
LRSI-F3
LINE
I/O10 I/O 9
POWER
ALARMS
E
1
SIGNAL
SYNC LOSS
A B
QUALITY
A B
LINE
TEST AL ARM
HTU-E1
Internal Modules
for User Modules
LRSI-F3
LRSI-F3
LINE
LINE
I/O 8
POWER
POWER
ALARMS
ALARMS
E
1
SIGNAL
SIGNAL
SYNC LOSS
SYNC LOSS
A B
A B
QUALITY
QUALITY
A B
A B
LINE
LINE
TEST AL ARM
TEST AL ARM
HTU-T1
HTU-E1
Internal Modules f or
System Slots
LRSI-F-PSP / 230 / 115
LRSI-F2
LRSI-F2
LRSI-F2
LINE
DCE
POWER
TD
RD
RTS
DCD
LINE
LOS QLTY
TEST AL ARM
ASMi-450
LINE
DCE DCE
POWER
TD
RD
RTS
DCD
LINE
LOS QLTY
TEST AL ARM
ASMi-450
LINE
DCE
I/O 6
I/O 7
E
1
I/O 5
I/O 4 I/O 3 I/O 2
POWER
TD
RD
RTS
DCD
LINE
QLTY
LOS
TEST ERR
ASMi-50C
LRSI-F2
LINE
I/O 1 CL
POWER
TD
RD
RTS
DCD
LINE
LOS QLTY
TEST AL ARM
ASMi-450
LRSI-F1-CM2
10BT
ETHERNET
POWER
TD
RD
STAT / ADD
CONTROL
R
S
2
3
2
CM-2
PHANTOM
S
POWER
150V
T
A
T
I
O
N
C
L
K
100-230 VAC
3A T 250V
MANAGEMENT
PS-B PS -A
LRSI-F-P SP / 48
PHANTOM
150V
48V
CHASS
GND
Figure 1-7. LRS-24F Enclosure, Typical Front View
1.3 Functional Description
The main functions of the LRS-24 chassis are to provide mechanical support and
connections between the various modules.
The main modules are:
• Power Supply (PS) Modules
• Common Logic Modules
• I/O (User) Modules.
Power Supply (PS) Modules
Control
Logic
Module
Redundant
Power Supply
(Option)
System SlotsUser Modules
Power
Supply
The LRS-24 hub can be powered by AC and DC power supply modules. Two
power supply modules can be installed to provide redundancy. The following
types of AC and DC power supply modules are available for LRS-24:
• AC power supply module, PS-LRS/230/115 – operates on 100 to 240 VAC
nominal, and provides a maximum total output power of 120W.
Functional Description 1-11
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• DC power supply module, PS-LRS/48 – operates on –48 VDC, and provides a
maximum total power of 120W.
The PS modules are installed in dedicated chassis slots. The chassis has two PS
slots, enabling the installation of two PS modules, for redundancy. When both
modules are operational, they share the load; in case of failure or loss of input
power, the remaining module continues to supply the power alone. Switchover is
thus automatic and does not interrupt normal operation.
A redundant module can be installed in an operating enclosure without turning off
the enclosure power. An AC and a DC PS module can be installed simultaneously.
Several I/O modules installed in the chassis can supply remote (phantom) feed
voltage for the remote equipment connected to the modules installed in the
LRS-24. This voltage must be provided by an external source.
RAD offers a standalone unit, LRS-PS-FEED, that can provide the required voltage
for the remote power source. LRS-PS-FEED is explained in Appendix B of this
manual.
The phantom feed voltage is connected through the power supply interface
module and through the corresponding PS to the internal phantom feed
distribution bus of the LRS-24.
Common Logic Modules
LRS-24 is managed by either of the two CM modules, CM-1 or CM-2. The main
functions of the two module types are:
• Interfacing between a management facility and the equipment modules
installed in LRS-24. The CM-1 module only supports management by means of
a supervision terminal; the CM-2 module also supports network management
stations.
• Distribution of an external clock signal (station clock) to the equipment
modules. The station clock interface circuits of the common logic modules
have the following user-selectable modes:
− T1 DSU interface per ANSI TR-62411 and ANSI T1.403, with 100Ω
balanced T1 line interface. This mode accepts an AMI-coded clock signal of
1544 kHz. The maximum signal attenuation is 10 dB.
− E1 DSU interface per ITU-T Rec. G.703, which accepts an
HDB3-coded clock signal of 2048 kHz. The E1 interface can be configured
to operate as a 120Ω balanced line interface, or a 75Ω unbalanced
interface. The maximum line attenuation is 10 dB.
− Square interface per TTL input.
1-12 Functional Description
The recovered clock signal is returned toward the equipment providing the clock
signal (remote loop condition, controlled by a user jumper).
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Management
CM-1 Management Capabilities
An ASCII terminal can be used as a supervision terminal to manage the CM-1
module. The supervision terminal is connected to one of the RS-232 asynchronous
serial supervisory ports (one port is located on the CM-1 module itself and the
second port is located on the interface module serving the CM-1 module).
The CM-1 module operates as an interface module that does not process the
management information, but only transfers the management traffic transparently
to the modules installed in the LRS-24. Therefore, the supervision terminal is
controlled by the software stored in the managed modules, and the management
capabilities depend on the capabilities of the managed modules.
For a description of the management activities supported by a terminal connected
to the CM-1 module, refer to the Installation and Operation Manuals available for
the modules installed in LRS-24.
CM-2 Management Capabilities
The CM-2 module enhances the management capabilities available to the user by
including three different management functions:
• SNMP management. For SNMP management, the CM-2 module
communicates via an additional management interface located on the
interface module serving the CM-2 module. Currently, two types of interfaces
are available: an Ethernet 10BaseT interface (for UTP and STP media), and an
Ethernet 10Base2 interface (for coaxial media). This configuration is illustrated
in Figure 1-8.
• SNMP management communication with an LRS-24 module that includes
an SNMP agent is handled by an internal SNMP agent and bridge/router
located on the CM-2 module. To enable SNMP management of modules
without SNMP agents, the CM-2 module includes a proxy agent that converts
the management traffic to the proprietary internal protocol used to manage
such modules.
• Management by an ASCII terminal operating as a supervision terminal. The
terminal, which is controlled by the software stored in the managed modules,
connects to the serial RS-232 asynchronous supervisory port located on the
CM-2 module (see Figure 1-8). The management capabilities available through
the terminal are similar to those available through the CM-1 module.
• Management by means of Telnet. The CM-2 also supports the Telnet
protocol. This enables remote management via the same command line
interface used with a supervision terminal. Telnet uses TCP/IP communication
through the Ethernet port of the CM-2 card.
• Management via RS-232 by Slip Protocol with SNMP management.
Functional Description 1-13
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LRS-24
LRS-24
WAN
Supervision
Ter min al
LRS-24
Management
Station
MBEMBE
LRS-24
Figure 1-8. Basic Management Configuration for LRS-24 with CM-2 Modules
I/O (User) Modules
LRS-24 can be equipped with various types of input/output (I/O) modules to
provide the required system functions. These include ASMi-24C, ASMi-31C,
ASMi-31CQ, ASMi-50C, ASMi-450C, HTU-E1C, FOMi-40C, FOMi-E1/T1C,
FOMi-E3C, FOMi-T3C, MTMi-20C, FOMi-40CD, ASM-40CD, FOMi-E1/T1/CD,
ASMi-50CD, and ASMi-51CQ.
Chassis
Characteristics
Power
The range of modules and options available for LRS-24 is continuously expanding.
Refer to the Installation and Operation Manuals of the corresponding modules for
information.
1.4 Technical Specifications
Number of
Functional Module
Slots
Slot Usage
Module
PS-LRS/230/115
Module PS-LRS/48
Remote (Phantom)
Source
15 – Each slot is connected to an interface module slot
2 power supply slots
1 common logic slot
12 identical slots for I/O (user) modules
100 – 240 VAC nominal, 50/60 Hz, maximum 160W
–48 VDC nominal, maximum 160W
LRS-PS-FEED standalone unit
1-14 Technical Specifications
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External Clock Interface
T1 Mode
E1 Mode
Type
Clock Rate
Line Interface
Line Code
Receive Level
Transmit Level
Type
Bit Rate
Line Interface
Line Code
Receive Level
Transmit Level
Square
T1
1.544 MHz
100ΩΩΩΩ, balanced
Bipolar AMI
0 through -10 dB
±3V ±10%, balanced
E1
2.048 MHz
120Ω, balanced
75Ω, unbalanced
AMI
0 through -10 dB
±3V ±10%, balanced
±2.73V ±10%, unbalanced
Minimum 2.2V peak-to-peak amplitude
CM-1 Management Interface
Functionality
Hardware
Software
CM-2 Management Interface
Functionality
Transparent interfacing to internal management ports of
I/O modules
RS-232 asynchronous port, compatible with
VT-52, VT-100, FREEDOM-100, FREEDOM-110,
FREEDOM-220
Data rates up to 9.6 kbps
Word format: software-configurable
Terminal driven by software stored in each I/O module
Terminal management interface
SNMP agent with internal bridge/router and ARP server
for internal modules
Protocol conversion between internal management
protocols of I/O modules and external management
function
Technical Specifications 1-15
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Physical Data
Hardware
Asynchronous Port
Characteristics
Software
LRS-24F
Height
Width including
brackets
Ethernet 10BaseT interface for UTP and STP media
Ethernet 10Base2 interface for coaxial media
RS-232 asynchronous port, compatible with VT-52,
VT-100, FREEDOM-100, FREEDOM-110, and
FREEDOM-220
Data rate: 38.4 kbps
Word format: one start bit, eight data bits, no parity, one
stop bit
SNMP over Ethernet LAN port
Terminal interface controlled by software stored in the
CM-2 module
299 mm/ 11.8 in
533.8 mm/ 21 in
Environment
Width without
brackets
Depth
LRS-24B
Height
Width including
brackets
Width without
brackets
Depth
Operating
Temperature
Storage
Temperature
Humidity
437.8 mm/ 17.2 in
252 mm/ 9.9 in
177 mm/ 7.0 in
533.8 mm/ 21 in
437.8 mm/ 17.2 in
324 mm/ 12.8 in
32°F to 113°F / 0°C to 45°C
0°F to 150°F / –20°C to +70°C
Up to 90%, non-condensing
1-16 Technical Specifications
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Installation and Setup
This chapter provides installation and operation instructions for the LRS-24 system,
and the basic system configuration of the power supply (PS) and common logic
(CM-1 and CM-2) modules. It includes the following topics:
• Site requirements and prerequisites
• Equipment needed
• Package contents
• Installation and setup
• Interfaces and connections
• Initial operation and basic checks
See Chapter 3 for management via a CM-1 module and Chapter 4 for
management via a CM-2 module.
2.1 Introduction
If LRS-24 includes a CM-2 module, you must configure management parameters
of the CM-2 module before the management functions are operable. This
procedure is explained in Chapter 4.
After installing the basic system, install the user modules according to the system
installation plan, as explained in the Installation and Operation Manual of the
individual modems.
No internal settings, adjustment, maintenance, and repairs may be performed
by either the operator or the user; such activities may be performed only by a
skilled technician who is aware of the hazards involved.
Warning
Mechanical Data
Always observe standard safety precautions during installation, operation, and
maintenance of this product.
Figure 2-1 provides mechanical data on the LRS-24F chassis. Figure 2-2 provides
mechanical data on the LRS-24B chassis.
Introduction 2-1
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2-2 Introduction
Figure 2-1. LRS-24F Mechanical Diagram
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