cisco 1941 description

Cisco MWR 1941-DC-A Mobile Wireless Edge Router Hardware Installation GuideMarch 23, 2007

Americas HeadquartersCisco Systems, Inc.170 West Tasman DriveSan Jose, CA 95134-1706 USAhttp://www.cisco.comTel: 408 526-4000

800 553-NETS (6387)Fax: 408 527-0883

Customer Order Number: Text Part Number: OL-7872-02

http://www.cisco.com

THE SPECIFICATIONS AND INFORMATION REGARDING THE PRODUCTS IN THIS MANUAL ARE SUBJECT TO CHANGE WITHOUT NOTICE. ALL STATEMENTS, INFORMATION, AND RECOMMENDATIONS IN THIS MANUAL ARE BELIEVED TO BE ACCURATE BUT ARE PRESENTED WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED. USERS MUST TAKE FULL RESPONSIBILITY FOR THEIR APPLICATION OF ANY PRODUCTS.

THE SOFTWARE LICENSE AND LIMITED WARRANTY FOR THE ACCOMPANYING PRODUCT ARE SET FORTH IN THE INFORMATION PACKET THAT SHIPPED WITH THE PRODUCT AND ARE INCORPORATED HEREIN BY THIS REFERENCE. IF YOU ARE UNABLE TO LOCATE THE SOFTWARE LICENSE OR LIMITED WARRANTY, CONTACT YOUR CISCO REPRESENTATIVE FOR A COPY.

The following information is for FCC compliance of Class A devices: This equipment has been tested and found to comply with the limits for a 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 radio communications. Operation of this equipment in a residential area is likely to cause harmful interference, in which case users will be required to correct the interference at their own expense.

The following information is for FCC compliance of Class B devices: The equipment described in this manual generates and may radiate radio-frequency energy. If it is not installed in accordance with Cisco’s installation instructions, it may cause interference with radio and television reception. This equipment has been tested and found to comply with the limits for a Class B digital device in accordance with the specifications in part 15 of the FCC rules. These specifications are designed to provide reasonable protection against such interference in a residential installation. However, there is no guarantee that interference will not occur in a particular installation.

Modifying the equipment without Cisco’s written authorization may result in the equipment no longer complying with FCC requirements for Class A or Class B digital devices. In that event, your right to use the equipment may be limited by FCC regulations, and you may be required to correct any interference to radio or television communications at your own expense.

You can determine whether your equipment is causing interference by turning it off. If the interference stops, it was probably caused by the Cisco equipment or one of its peripheral devices. If the equipment causes interference to radio or television reception, try to correct the interference by using one or more of the following measures:

• Turn the television or radio antenna until the interference stops.

• Move the equipment to one side or the other of the television or radio.

• Move the equipment farther away from the television or radio.

• Plug the equipment into an outlet that is on a different circuit from the television or radio. (That is, make certain the equipment and the television or radio are on circuits controlled by different circuit breakers or fuses.)

Modifications to this product not authorized by Cisco Systems, Inc. could void the FCC approval and negate your authority to operate the product.

The Cisco implementation of TCP header compression is an adaptation of a program developed by the University of California, Berkeley (UCB) as part of UCB’s public domain version of the UNIX operating system. All rights reserved. Copyright © 1981, Regents of the University of California.

NOTWITHSTANDING ANY OTHER WARRANTY HEREIN, ALL DOCUMENT FILES AND SOFTWARE OF THESE SUPPLIERS ARE PROVIDED “AS IS” WITH ALL FAULTS. CISCO AND THE ABOVE-NAMED SUPPLIERS DISCLAIM ALL WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING, WITHOUT LIMITATION, THOSE OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OR ARISING FROM A COURSE OF DEALING, USAGE, OR TRADE PRACTICE.

IN NO EVENT SHALL CISCO OR ITS SUPPLIERS BE LIABLE FOR ANY INDIRECT, SPECIAL, CONSEQUENTIAL, OR INCIDENTAL DAMAGES, INCLUDING, WITHOUT LIMITATION, LOST PROFITS OR LOSS OR DAMAGE TO DATA ARISING OUT OF THE USE OR INABILITY TO USE THIS MANUAL, EVEN IF CISCO OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

CCVP, the Cisco Logo, and the Cisco Square Bridge logo are trademarks of Cisco Systems, Inc.; Changing the Way We Work, Live, Play, and Learn is a service mark ofCisco Systems, Inc.; and Access Registrar, Aironet, BPX, Catalyst, CCDA, CCDP, CCIE, CCIP, CCNA, CCNP, CCSP, Cisco, the Cisco Certified Internetwork Expert logo,Cisco IOS, Cisco Press, Cisco Systems, Cisco Systems Capital, the Cisco Systems logo, Cisco Unity, Enterprise/Solver, EtherChannel, EtherFast, EtherSwitch, Fast Step,Follow Me Browsing, FormShare, GigaDrive, GigaStack, HomeLink, Internet Quotient, IOS, iPhone, IP/TV, iQ Expertise, the iQ logo, iQ Net Readiness Scorecard, iQuickStudy, LightStream, Linksys, MeetingPlace, MGX, Networking Academy, Network Registrar, Packet, PIX, ProConnect, RateMUX, ScriptShare, SlideCast, SMARTnet,StackWise, The Fastest Way to Increase Your Internet Quotient, and TransPath are registered trademarks of Cisco Systems, Inc. and/or its affiliates in the United States andcertain other countries.

All other trademarks mentioned in this document or Website are the property of their respective owners. The use of the word partner does not imply a partnership relationshipbetween Cisco and any other company. (0612R)

Cisco MWR 1941-DC-A Mobile Wireless Edge Router Hardware Installation GuideCopyright © 2005-2007 Cisco Systems, Inc. All rights reserved.

CiOL-7872-04

C O N T E N T S

About This Guide vii

Document Revision History viii

Objectives viii

Audience viii

Organization viii

Conventions ix

Safety Warnings x

Related Documentation xv

Obtaining Documentation, Obtaining Support, and Security Guidelines xvi

C H A P T E R 1 Product Overview 1-1

Introduction 1-2

RAN Optimization Implementation 1-2

Cisco Abis and Iub Optimization over IP Implementation 1-3

Cisco GSM Abis Optimization over IP 1-4

Cisco Iub Optimization over IP 1-4

Intelligent Cell Site IP Services 1-4

Cell Site Points-of-Presence (POPs) 1-4

Hardware Description 1-6

Cisco MWR 1941-DC-A Router Front View 1-7

LEDs 1-8

Cisco MWR 1941-DC-A Rear View 1-9

Advance Integration Module for ATM 1-10

Fixed Interfaces 1-10

Interface Cards 1-11

VWIC-2T1/E1-RAN 1-11

Cisco Network Modules 1-11

Compact Flash Memory 1-12

Power Supply 1-12

Safety Precautions 1-12

Environmental Monitoring Temperature Sensor 1-13

System Specifications 1-13

iiisco MWR 1941-DC-A Mobile Wireless Edge Router Hardware Installation Guide

Contents

Cisco MWR 1941-DC-A Router Interface Numbering 1-14

Slot and Port Numbering 1-14

Regulatory Compliance 1-15

C H A P T E R 2 Preparing to Install the Router 2-1

Safety Guidelines 2-2

Safety with Equipment 2-2

Safety with Electricity 2-2

Preventing Electrostatic Discharge Damage 2-4

Before You Begin 2-4

Site Planning 2-4

Power Supply Considerations 2-4

Site Environment 2-5

Air Flow Guidelines 2-5

Method of Procedure 2-6

Unpacking and Checking the Contents of your Shipment 2-6

Required Tools and Equipment 2-7

Installation Checklist 2-8

Creating a Site Log 2-9

Console and Auxiliary Port Considerations 2-9

Console Port Connections 2-10

Auxiliary Port Connections 2-10

C H A P T E R 3 Installing the Cisco MWR 1941-DC-A Router 3-1

Network Modules and Interface Cards 3-2

Mounting the Cisco MWR 1941-DC-A Router 3-2

Rack-Mounting Configuration Guidelines 3-3

Attaching the Rack-Mounting Brackets 3-3

Mounting the Cisco MWR 1941-DC-A Router in a Rack 3-4

Connecting the Chassis Ground and Power 3-5

Grounding Connections 3-5

Power Connections 3-7

Wiring the DC-Input Power Source 3-7

Connecting Cables 3-8

Connecting the Console (Terminal) and Auxiliary (Modem) Ports 3-8

Types of RJ-45 Cables 3-9

Console Port 3-10

Auxiliary Port 3-10

ivCisco MWR 1941-DC-A Mobile Wireless Edge Router Hardware Installation Guide

OL-7872-04

Contents

Connecting the Network Cables 3-10

Connecting the Cisco 2-port T1/E1-RAN (VWIC-2T1/E1-RAN) Interface Cables 3-11

Cable-Management 3-14

Powering Up the Router 3-14

Checklist for Power Up 3-14

Front-Panel LEDs 3-14

Power-Up Procedure 3-15

Formatting Procedures for CF Memory Cards 3-15

Formatting CF Memory Card as a DOS File System 3-16

File and Directory Procedures 3-16

Copy Files 3-16

Display the Contents of a CF Card 3-17

Display Geometry and Format Information 3-17

Delete Files from a Flash Memory Card 3-18

Rename a File in a Flash Memory Card 3-18

Display File Content 3-18

Create a New Directory 3-19

Remove a Directory 3-19

Enter a Directory and Determine the Current Directory 3-20

What to Do After Installing the Hardware 3-20

A P P E N D I X A Troubleshooting A-1

Problem Solving A-1

Troubleshooting the Power and Cooling Systems A-2

Environmental Reporting Features A-2

Troubleshooting Modules, Cables, and Connections A-3

Reading the LEDs A-4

A P P E N D I X B Cable Specifications B-1

Console and Auxiliary Port Signals and Pinouts B-2

Console Port Signals and Pinouts B-2

Auxiliary Port Signals and Pinouts B-3

Fast Ethernet Connector Pinouts B-4

T1/E1 Port Pinouts (RJ-48) B-5

A P P E N D I X C Site Log C-1

I N D E X

vCisco MWR 1941-DC-A Mobile Wireless Edge Router Hardware Installation Guide

OL-7872-04

Contents

viCisco MWR 1941-DC-A Mobile Wireless Edge Router Hardware Installation Guide

OL-7872-04

About This Guide

This preface describes the objectives, audience, organization, and conventions of this hardware installation guide.

Note Use this document along with the documents listed in the “Related Documentation” section on page xv.

This preface contains the following sections:

• Document Revision History, page viii

• Objectives, page viii

• Audience, page viii

• Organization, page viii

• Conventions, page ix

• Safety Warnings, page x

• Related Documentation, page xv

• Obtaining Documentation, Obtaining Support, and Security Guidelines, page xvi

viiCisco MWR 1941-DC-A Mobile Wireless Edge Router Hardware Installation Guide

OL-7872-04

About This Guide Document Revision History

Document Revision HistoryThe Document Revision History table below records technical changes to this document. The table shows the document revision number for the change, the date of the change, and a brief summary of the change. Note that not all Cisco documents use a Document Revision History table.

ObjectivesThis guide explains how to install, maintain, and troubleshoot your router hardware.

This guide provides minimum software configuration information, not comprehensive information. For detailed software configuration information, see the Cisco IOS configuration guide and command reference publications (see the “Obtaining Documentation, Obtaining Support, and Security Guidelines” section on page xvi for more information.)

Warranty, service, and support information is in the Cisco Information Packet that shipped with your router.

AudienceThis guide is designed for personnel who install, configure, and maintain the router. These persons should be familiar with electronic circuitry and wiring practices and be experienced electronic or electromechanical technicians. This guide identifies certain procedures that should be performed only by trained and qualified personnel.

OrganizationThe major sections of this hardware installation guide are listed in the following table:

Revision Date Change Summary

OL-7872-04 June 14, 2007 New image from 12.4(12)MR1 was added to replace the image from 12.4(12)MR.

OL-7872-03 February 28, 2007 Support for the AIM-ATM-8 card was added. Changes on pages 1-6, 1-10, 1-11, and 3-4.

OL-7872-02 November 4, 2005 Revised Table 3-2, “RJ-48C Pinout for Shielded and Unshielded Cables”.

OL-7872-01 August 9, 2005 Initial release.

Chapter Title Description

Chapter 1 Product Overview Describes the hardware features and specifications of the routers.

Chapter 2 Preparing to Install the Router Describes safety recommendations, site requirements, network connection considerations, required tools and equipment, and provides the installation checklist.

viiiCisco MWR 1941-DC-A Mobile Wireless Edge Router Hardware Installation Guide

OL-7872-04

About This Guide Conventions

ConventionsThis guide uses the following conventions to convey instructions and information.

Note Means reader take note. Notes contain helpful suggestions or references to material not covered in the manual.

Timesaver Means the described action saves time. You can save time by performing the action described in the paragraph.

Tip Means the following information will help you solve a problem. The tips information might not be troubleshooting or even an action, but could be useful information, similar to a Timesaver.

Caution Means reader be careful. In this situation, you might do something that could result in equipment damage or loss of data.

Chapter 3 Installing the Cisco MWR 1941-DC-A Router

Includes router installation information, and shows how to connect the router console, auxiliary, and network ports.

Appendix A Troubleshooting Describes how to isolate problems, read LEDs, interpret error and status messages, recover an enable password, and recover software images.

Appendix B Cable Specifications Provides cable specifications to use if you plan to build your own cables.

Appendix C Site Log Provides example site log.

Chapter Title Description

Convention Description

boldface font Commands and keywords.

italic font Variables for which you supply values.

[ ] Keywords or arguments that appear within square brackets are optional.

{x | y | z} A choice of required keywords appears in braces separated by vertical bars. You must select one.

screen font Examples of information displayed on the screen.

boldface screen font

Examples of information you must enter.

< > Nonprinting characters, for example passwords, appear in angle brackets.

[ ] Default responses to system prompts appear in square brackets.

ixCisco MWR 1941-DC-A Mobile Wireless Edge Router Hardware Installation Guide

OL-7872-04

About This Guide Safety Warnings

Safety WarningsSafety warnings appear throughout this publication in procedures that, if performed incorrectly, might harm you. A warning symbol precedes each warning statement. The safety warnings provide safety guidelines that you should follow when working with any equipment that connects to electrical power or telephone wiring. Included in the warnings are translations in several languages. (Refer to the Cisco Regulatory Compliance and Safety Information for the Cisco MWR 1941-DC-A Mobile Wireless Edge Router for detailed information about compliance guidelines and translated safety warnings.)

Warning IMPORTANT SAFETY INSTRUCTIONS

This warning symbol means danger. You are in a situation that could cause bodily injury. Before you work on any equipment, be aware of the hazards involved with electrical circuitry and be familiar with standard practices for preventing accidents. Use the statement number provided at the end of each warning to locate its translation in the translated safety warnings that accompanied this device. Statement 1071

SAVE THESE INSTRUCTIONS

Waarschuwing BELANGRIJKE VEILIGHEIDSINSTRUCTIES

Dit waarschuwingssymbool betekent gevaar. U verkeert in een situatie die lichamelijk letsel kan veroorzaken. Voordat u aan enige apparatuur gaat werken, dient u zich bewust te zijn van de bij elektrische schakelingen betrokken risico's en dient u op de hoogte te zijn van de standaard praktijken om ongelukken te voorkomen. Gebruik het nummer van de verklaring onderaan de waarschuwing als u een vertaling van de waarschuwing die bij het apparaat wordt geleverd, wilt raadplegen.

BEWAAR DEZE INSTRUCTIES

Varoitus TÄRKEITÄ TURVALLISUUSOHJEITA

Tämä varoitusmerkki merkitsee vaaraa. Tilanne voi aiheuttaa ruumiillisia vammoja. Ennen kuin käsittelet laitteistoa, huomioi sähköpiirien käsittelemiseen liittyvät riskit ja tutustu onnettomuuksien yleisiin ehkäisytapoihin. Turvallisuusvaroitusten käännökset löytyvät laitteen mukana toimitettujen käännettyjen turvallisuusvaroitusten joukosta varoitusten lopussa näkyvien lausuntonumeroiden avulla.

SÄILYTÄ NÄMÄ OHJEET

Attention IMPORTANTES INFORMATIONS DE SÉCURITÉ

Ce symbole d'avertissement indique un danger. Vous vous trouvez dans une situation pouvant entraîner des blessures ou des dommages corporels. Avant de travailler sur un équipement, soyez conscient des dangers liés aux circuits électriques et familiarisez-vous avec les procédures couramment utilisées pour éviter les accidents. Pour prendre connaissance des traductions des avertissements figurant dans les consignes de sécurité traduites qui accompagnent cet appareil, référez-vous au numéro de l'instruction situé à la fin de chaque avertissement.

CONSERVEZ CES INFORMATIONS

xCisco MWR 1941-DC-A Mobile Wireless Edge Router Hardware Installation Guide

OL-7872-04


Warnung WICHTIGE SICHERHEITSHINWEISE

Dieses Warnsymbol bedeutet Gefahr. Sie befinden sich in einer Situation, die zu Verletzungen führen kann. Machen Sie sich vor der Arbeit mit Geräten mit den Gefahren elektrischer Schaltungen und den üblichen Verfahren zur Vorbeugung vor Unfällen vertraut. Suchen Sie mit der am Ende jeder Warnung angegebenen Anweisungsnummer nach der jeweiligen Übersetzung in den übersetzten Sicherheitshinweisen, die zusammen mit diesem Gerät ausgeliefert wurden.

BEWAHREN SIE DIESE HINWEISE GUT AUF.

Avvertenza IMPORTANTI ISTRUZIONI SULLA SICUREZZA

Questo simbolo di avvertenza indica un pericolo. La situazione potrebbe causare infortuni alle persone. Prima di intervenire su qualsiasi apparecchiatura, occorre essere al corrente dei pericoli relativi ai circuiti elettrici e conoscere le procedure standard per la prevenzione di incidenti. Utilizzare il numero di istruzione presente alla fine di ciascuna avvertenza per individuare le traduzioni delle avvertenze riportate in questo documento.

CONSERVARE QUESTE ISTRUZIONI

Advarsel VIKTIGE SIKKERHETSINSTRUKSJONER

Dette advarselssymbolet betyr fare. Du er i en situasjon som kan føre til skade på person. Før du begynner å arbeide med noe av utstyret, må du være oppmerksom på farene forbundet med elektriske kretser, og kjenne til standardprosedyrer for å forhindre ulykker. Bruk nummeret i slutten av hver advarsel for å finne oversettelsen i de oversatte sikkerhetsadvarslene som fulgte med denne enheten.

TA VARE PÅ DISSE INSTRUKSJONENE

Aviso INSTRUÇÕES IMPORTANTES DE SEGURANÇA

Este símbolo de aviso significa perigo. Você está em uma situação que poderá ser causadora de lesões corporais. Antes de iniciar a utilização de qualquer equipamento, tenha conhecimento dos perigos envolvidos no manuseio de circuitos elétricos e familiarize-se com as práticas habituais de prevenção de acidentes. Utilize o número da instrução fornecido ao final de cada aviso para localizar sua tradução nos avisos de segurança traduzidos que acompanham este dispositivo.

GUARDE ESTAS INSTRUÇÕES

¡Advertencia! INSTRUCCIONES IMPORTANTES DE SEGURIDAD

Este símbolo de aviso indica peligro. Existe riesgo para su integridad física. Antes de manipular cualquier equipo, considere los riesgos de la corriente eléctrica y familiarícese con los procedimientos estándar de prevención de accidentes. Al final de cada advertencia encontrará el número que le ayudará a encontrar el texto traducido en el apartado de traducciones que acompaña a este dispositivo.

GUARDE ESTAS INSTRUCCIONES

xiCisco MWR 1941-DC-A Mobile Wireless Edge Router Hardware Installation Guide

OL-7872-04


Varning! VIKTIGA SÄKERHETSANVISNINGAR

Denna varningssignal signalerar fara. Du befinner dig i en situation som kan leda till personskada. Innan du utför arbete på någon utrustning måste du vara medveten om farorna med elkretsar och känna till vanliga förfaranden för att förebygga olyckor. Använd det nummer som finns i slutet av varje varning för att hitta dess översättning i de översatta säkerhetsvarningar som medföljer denna anordning.

SPARA DESSA ANVISNINGAR

xiiCisco MWR 1941-DC-A Mobile Wireless Edge Router Hardware Installation Guide

OL-7872-04


Aviso INSTRUÇÕES IMPORTANTES DE SEGURANÇA

Este símbolo de aviso significa perigo. Você se encontra em uma situação em que há risco de lesões corporais. Antes de trabalhar com qualquer equipamento, esteja ciente dos riscos que envolvem os circuitos elétricos e familiarize-se com as práticas padrão de prevenção de acidentes. Use o número da declaração fornecido ao final de cada aviso para localizar sua tradução nos avisos de segurança traduzidos que acompanham o dispositivo.

GUARDE ESTAS INSTRUÇÕES

Advarsel VIGTIGE SIKKERHEDSANVISNINGER

Dette advarselssymbol betyder fare. Du befinder dig i en situation med risiko for legemesbeskadigelse. Før du begynder arbejde på udstyr, skal du være opmærksom på de involverede risici, der er ved elektriske kredsløb, og du skal sætte dig ind i standardprocedurer til undgåelse af ulykker. Brug erklæringsnummeret efter hver advarsel for at finde oversættelsen i de oversatte advarsler, der fulgte med denne enhed.

GEM DISSE ANVISNINGER

xiiiCisco MWR 1941-DC-A Mobile Wireless Edge Router Hardware Installation Guide

OL-7872-04


xivCisco MWR 1941-DC-A Mobile Wireless Edge Router Hardware Installation Guide

OL-7872-04

About This Guide Related Documentation

Related DocumentationFor information beyond the scope of this document, or for additional information about the Cisco MWR 1941-DC-A router, refer to the following publications:

• Cisco Regulatory Compliance and Safety Information for the Cisco MWR 1941-DC-A Mobile Wireless Edge Router

• Cisco MWR 1941-DC-A Mobile Wireless Edge Router Software Configuration Guide

• Cisco MWR 1941-DC-A Mobile Wireless Edge Router Rack-Mounting Instructions

• Cisco 2-port T1/E1-RAN Optimization Installation Instructions

• Release Notes for Cisco MWR 1941-DC-A Mobile Wireless Edge Router for Cisco IOS Release 12.4(2)MR

• Quick Start Guide: Network Modules for Cisco 2600 Series, Cisco 3600 Series, Cisco 3700 Series, and Cisco MWR 1941-DC-A Mobile Wireless Edge Routers

• Cisco Network Modules Hardware Installation Guide

• Interface Cards for Cisco 1600 Series, Cisco 1700 Series, Cisco 2600 Series, Cisco 3600 Series, and Cisco 3700 Series Routers

• Cisco Interface Cards Installation Guide

xvCisco MWR 1941-DC-A Mobile Wireless Edge Router Hardware Installation Guide

OL-7872-04

About This Guide Obtaining Documentation, Obtaining Support, and Security Guidelines

Obtaining Documentation, Obtaining Support, and Security Guidelines

For information on obtaining documentation, obtaining support, providing documentation feedback, security guidelines, and also recommended aliases and general Cisco documents, see the monthly What’s New in Cisco Product Documentation, which also lists all new and revised Cisco technical documentation, at:

http://www.cisco.com/en/US/docs/general/whatsnew/whatsnew.html

xviCisco MWR 1941-DC-A Mobile Wireless Edge Router Hardware Installation Guide

OL-7872-04

http://www.cisco.com/en/US/docs/general/whatsnew/whatsnew.html

Cisco MWR 1941-DC-A MobileOL-7872-04

C H A P T E R1
Product Overview
The Cisco MWR 1941-DC-A Mobile Wireless Edge Router is a general purpose router platform specializing in 2/2.5G Global System for Mobile Communication (GSM) and 3G Universal Mobile Telecommunication System (UMTS) Radio Access Network (RAN) backhaul transport and optimization.

This chapter includes the following sections:

• Introduction, page 1-2

• Hardware Description, page 1-6

• Interface Cards, page 1-11

• Cisco Network Modules, page 1-11

• Compact Flash Memory, page 1-12

• Power Supply, page 1-12

• Environmental Monitoring Temperature Sensor, page 1-13

• System Specifications, page 1-13

• Cisco MWR 1941-DC-A Router Interface Numbering, page 1-14

• Regulatory Compliance, page 1-15

1-1 Wireless Edge Router Hardware Installation Guide

Chapter 1 Product Overview Introduction

IntroductionA typical RAN is composed of thousands of Base Transceiver Stations (BTSs)/Node Bs, hundreds of Base Station Controllers/Radio Network Controllers (BSCs/RNCs), and several Mobile Switching Centers (MSCs). The BTSs/Node Bs and BSCs/RNCs are often separated by large geographic distances, with the BTSs/Node Bs located in cell sites uniformly distributed throughout a region, and the BSCs, RNCs, and MSCs located at suitably chosen Central Offices (COs) and/or Mobile Telephone Switching Offices (MTSOs). The traffic generated by a BTS/Node B is transported to the corresponding BSC/RNC across a network, referred to as the backhaul network, which is often a hub-and-spoke topology with hundreds of BTSs/Node Bs connected to a given BSC/RNC by point-to-point TDM trunks. These TDM trunks may be leased line T1/E1s or their logical equivalents, such as microwave links or satellite channels. The interface between the BTS and BSC in GSM and CDMA systems is called the Abis interface. The interface between the Node B and RNC in a UMTS system is called the Iub interface.

RAN Optimization ImplementationIn RAN Optimization (RAN-O), the Cisco MWR 1941-DC-A router extends IP connectivity to the cell site and base transceiver station (BTS). The router provides bandwidth-efficient IP transport of GSM and UMTS voice and data bearer traffic, as well as maintenance, control, and signaling traffic, over the leased line backhaul network between the BTS and leased line termination and aggregation node via compression (including Abis Optimization over IP, Iub Optimization over IP, and cRTP/cUDP) and packet multiplexing (Multilink PPP).

Figure 1-1 shows an example of the placement of and connections for the Cisco MWR 1941-DC-A router in a RAN.

Figure 1-1 Example of Cisco MWR 1941-DC-A Router in a RAN

The BTS site consists of a pair of Cisco MWR 1941-DC-A routers. The pair of routers provides an active router and a standby router for redundancy. A failure of the active router causes the standby router to take over as the active router for the BTS site.

Each pair of Cisco MWR 1941-DC-A routers at the BTS site is identical in hardware configuration. The two routers connect to each other through the Fast Ethernet interfaces. The individual backhaul links to a Cisco MWR 1941-DC-A router are cabled from a single T1/E1 termination block in the BTS, connecting to both the active and standby routers by means of a Y cable. The redundancy design to control the active/standby transitions of the router pair leverages Hot-Standby Router Protocol (HSRP) to control the relays on the VWIC-2T1/E1-RAN (for more information, see Cisco 2-port T1/E1 RAN Optimization VWIC Installation Instructions) in each router to ensure that the relays on the active router are closed while the relays on the standby router are open, thus avoiding double termination of the T1 (or E1).

Active

GSMBTS orUMTS

Node-B MWR 1941 BTS router pair

T1/E1

T1/E1 backhaul link toIP RAN aggregation node

Standby

9264

6

1-2Cisco MWR 1941-DC-A Mobile Wireless Edge Router Hardware Installation Guide

OL-7872-04


Cisco Abis and Iub Optimization over IP ImplementationOne solution that mobile wireless operator’s find of value is Cisco’s ability to optimize RAN backhaul efficiency (see Figure 1-2). For example, Cisco’s GSM Abis Optimization solution increases the T1/E1 bandwidth efficiency by as much as 50%. This means the current traffic loads can be carried using half as many T1/E1 trunks as are presently used. This allows more voice and data calls to be carried over the existing RAN backhaul network, eliminating the need for the operator to add expensive new T1/E1 trunks as traffic demands grow. It will also allow a number of existing trunks to be decommissioned, putting an end to their recurring costs.

Another equally important benefit is that substantial excess capacity is now available in the existing RAN backhaul network. The operator can reallocate this recovered bandwidth to carry traffic from other radios, such as UMTS Node Bs, GPRS, EDGE, 1xEV-DO, PWLANs, and other data overlays. This capability reduces the deployment and operating costs for new technologies, since the operator avoids the up-front and recurring costs of supplementing backhaul capacity. It also accelerates time to revenue from deployments of new radio technologies since there is no need for the operator to wait for additional microwave licenses or leased lines to be supplied.

Compliance with 3GPP2 and 3GPP R5 and R6 transport standards is another appealing aspect of Cisco’s RAN Optimization solution. Cisco converts today’s CDMA transport networks into 3GPP2-compliant IP RAN transport networks, and GSM and R4/R99 UMTS transport networks into R5/R6 IP RAN transport networks now—and adds multi-radio backhaul compression as well. This means operators can enjoy the benefits of IP transport in their CDMA, GSM, and R4/R99 UMTS RANs today.

Figure 1-2 Example of Cisco MWR 1941-DC-A Router in a GSM Abis and UMTS Iub Optimization over IP

GSM/GPRS/EDGE BTS

UMTS Node B(R4/R99)

BSC

RNC

T1/E1

Cell Site Access Network BSC/RNC Site MobileInternetEdge

Optimized Abis & lub over IP

CiscoMWR 1941-DC-A

ATM(AAL2/AAL5)

TDMTDM

ATM

CiscoONS 15454

9264

8


OL-7872-04


Cisco GSM Abis Optimization over IP

The Cisco GSM Abis Optimization over IP technology improves T1/E1 bandwidth efficiency by 33% to 50%, corresponding to a GSM voice call capacity gain of 50-100% per T1/E1, depending on the nature of the traffic on the Abis interface.

In a GSM RAN, the interface between the BTS and BSC is a 3GPP reference interface called the Abis interface. The physical trunk connecting a BTS and BSC is typically a T1 or E1 circuit, and carries 24 (T1) or 32 (E1) separate 64 kbps DS0 channels. One or two of these DS0 channels is used to carry control and signaling traffic, while the remainder is used to carry bearer traffic—voice and data from mobile users. Each DS0 bearer channel carries up to four sub-multiplexed 16 kbps channels, termed sub-rate DS0s. The voice and data bearer traffic is carried over the sub-rate DS0s in transcoder and rate adaptor (TRAU) frames in accordance with 3GPP TS 08.60 v8.2.1, “In-band control of transcoders and rate adaptors for Enhanced Full Rate (EFR) and full rate traffic channels.” There are several types of TRAU frames: full-rate (FR) or enhanced full-rate (EFR) GSM vocoder frames; adaptive multi-rate (AMR) vocoder frames; silent speech frames; and OAM frames. When a sub-rate DS0 is assigned to a call, TRAU frames are generated in accordance with 3GPP TS 08.60 v8.2.1, “In-band control of transcoders and rate adaptors for Enhanced Full Rate (EFR) and full rate traffic channels.” When a sub-rate DS0 is idle, that is, not assigned to a call, a repeating idle pattern is transmitted in accordance with 3GPP TS 08.54 v8.0.1, “Base Station Controller-Base Transceiver Station (BSC-BTS) interface; Layer 1 structure of physical circuits.”

The transcoder and rate adaptation control function that specifies the TRAU frames provides several opportunities to optimize the Abis interface, and thus optimize the backhaul bandwidth efficiency. For example, when Discontinuous Transmission (DTX) is employed over the air interface, the TRAU frames that are transported on the Abis interface contain standardized redundant bit patterns, known as idle (silent) speech frames (FR and EFR) or “no data” frames (AMR), whenever a voice user is silent (typically 40-60% of the time). As another example, bearer channels that are not assigned to calls each carry known idle bit patterns on the Abis interface as mentioned previously. Thus, even though no radio transmissions are made during silent and idle periods, redundant information is nevertheless transported across the backhaul network thereby unnecessarily consuming precious bandwidth.

Cisco Iub Optimization over IP

The Cisco Iub Optimization over IP technology for R4/R99 (ATM) UMTS RANs improves bandwidth efficiency by as much as 15% to 40%, corresponding to a UMTS voice call capacity gain of 18% to 67%, depending on the type of Iub header and ATM Adaptation Layer traffic sub-cell multiplexing performance. For R5/R6 IP UMTS RANs, Cisco provides compression and low-overhead encryption.

Intelligent Cell Site IP ServicesCisco’s RAN-O solutions also open up the possibility to deliver new profit-enhancing services. This is achieved through the rich set of IP networking features supported in Cisco IOS Software that are now extended to the cell site (see Figure 1-3 on page 1-5).

Cell Site Points-of-Presence (POPs)

Since many cell sites are located in and around downtown areas, hotels, airports, and convention centers, they make attractive sites for colocating public wireless WAN (PWLAN) access points and other wireless data overlays. Many of these wireless data radios are IP-based. IP networking features, like Mobile IP, VoIP, IP Multicast, VPN, and content caching, enable delivery of new revenue-generating services over these radios. Cisco also provides a wide range of low-latency IP-based QoS and traffic shaping models to allow flexible mixing of multiple traffic types across the same backhaul network.


OL-7872-04


Thus, the cell site becomes a physical Point-of-Presence or POP from which to offer hotspot services, or voice and wired ISP services to nearby enterprises and residences. The corresponding traffic “rides for free” on the spare backhaul bandwidth made available by Cisco’s Abis and Iub Optimization solutions.

Figure 1-3 Example of Cisco MWR 1941-DC-A Router in a Cell Site POP and Cell Site DCN

PWLANWCDMA-TDD

WiMAX(802.16/20)

GSM BTS

UMTS Node B(R4/R99)HSDPA

UMTS Node B(RS/R6)

IP-PBX BSC

RNC

CiscoMobile

Exchange

100Base-T T1/E1

Cell Site Access Network BSC/RNC Site MobileInternetEdge

Optimized Abis/lub over IP

CiscoMWR 1941-DC

Mobile IP/FAVoIPContent CachingMulti VPNIP MulticastingQoSPPPDHCPRouting

ATM

IP

TDMTDM

ATM

IP

CiscoONS 15454

IP-PBX

9264

7


OL-7872-04

Chapter 1 Product Overview Hardware Description

Hardware DescriptionContained in a standard shelf-rack enclosure, the Cisco MWR 1941-DC-A router weighs 10.5 pounds (4.77 kg). It measures 1.72 inches high x 17.5 inches wide x 12.5 inches deep (4.37 cm x 44.45 cm x 31.75 cm). These dimensions do not include the rack-mount brackets (installed at the factory or provided in the rack-mount bracket kit, Cisco part number 69-0791-01).

Note The rack-mount brackets are normally installed at the factory, however, if you received your router without the rack-mount brackets installed, see the “Attaching the Rack-Mounting Brackets” section on page 3-3 for how to install the rack-mount brackets.

The Cisco MWR 1941-DC-A router is mounted in a standard (EIA-310D) 19-inch (48.3 cm) equipment rack (using the rack-mount brackets provided).

The Cisco MWR 1941-DC-A router includes the following features:

• Two DIMM-168 synchronous dynamic RAM (SDRAM), 4 banks or sockets (256 MB factory installed)

• SysAD bus speed and SDRAM local bus speed are 80 Mhz

• Fixed compact flash (CF) memory, 128 MB (located on front panel), not field upgradeable

• Built-in (fixed) high performance advanced integration module for ATM (AIM-ATM or AIM-ATM-8) daughter card providing ATM segmentation and reassembly (SAR) (see the “Advance Integration Module for ATM” section on page 1-10 for more information)

Note The AIM-ATM or AIM-ATM-8 daughter card is an option that is only installed at the factory to the motherboard of a Cisco MWR 1941-DC-A router.

• Two fixed LAN 10/100Base-T Ethernet Ports (located on front panel)

• Three integrated VWIC expansion slots each supporting 2T1/E1

• One network module slot supporting two VWIC-2T1/E1-RANs

• Redundancy support via a VWIC-2T1/E1-RAN capable of port switching on/off via relays

• Console EIA/TIA-232 port

• Auxiliary serial port with hardware flow control

• Front (left and right side) to rear airflow using four 40-mm, 10-cfm exhaust fans (located on rear panel)

• + 27/-48 VDC (+/-20 to 60 VDC supply tolerance) universal power supply, see the “Power Supply” section on page 1-12 for a description and specifications


OL-7872-04


• Front access cabling

• Three green chassis LEDs (see the “Cisco MWR 1941-DC-A Router Front View” section on page 1-7 for a description):

– Power, labeled PWR (indicates whether power supply is operational)

– Status, labeled STAT (indicates whether software is up and running)

– Activity, labeled ACT (indicates whether interrupts or packet transfers are running)

• The Cisco MWR 1941-DC-A Router is normally shipped with:

– Mounting rack-mount brackets already installed (as described previously) that allow the Cisco MWR 1941-DC-A router to be positioned in an equipment rack.

Cisco MWR 1941-DC-A Router Front ViewOn the front panel, viewing from right to left, the Cisco MWR 1941-DC-A router (see Figure 1-4) shows the orientation of the following components:

• A 2-port T1/E1-RAN, installed in two of the three 2-port T1/E1-RAN (positions 0 and 1) slots.

• Auxiliary and Console ports.

• Fixed Compact flash slot.

• FE (FasatEthernet) ports.

• A blank panel, installed in the network module slot.

• Various LEDs (chassis, Fast Ethernet, and 2-port T1/E1-RANs), see the “LEDs” section for a description of the all the LEDs.

Note The location of the rack-mounting brackets is also shown facing front on the left and right sides of the router. Note how the brackets are attached to the left and right sides by wrapping around the air vent (see the “Mounting the Cisco MWR 1941-DC-A Router” section on page 3-2 for instructions on how to install the mounting brackets).


OL-7872-04


Figure 1-4 Cisco MWR 1941-DC-A Router Front View

LEDs

Tables 1-1, 1-2, and 1-3 describe the Cisco MWR 1941-DC-A LEDs located on the front panel.

6578

3

SEE MANUAL BEFORE INSTALLATION

SEE MANUAL BEFORE INSTALLATIONDSU56K

CONSOLEAUXILIARY

Network moduleslot

FastethernetLEDs:

Activity (G)Speed (G)Link (G)

VWIC LEDs:Alarm (A)

Loopback (A)Carrier detect (G)

VWICposition 0

2 portsVWIC

position 2

2 FEports

VWICposition 1

2 ports

Compactflash slot

Consoleport

Auxiliaryport

VWIC LEDs:Alarm (A)


Power (G)

Air vent (both sides)

Status (G) Chassis LEDsActivity (G)

Table 1-1 Chassis LEDs

LED Color State Description

Power (labeled PWR)

Green On Operating voltages on the mainboard are within acceptable ranges.

Off The router is not connected to a power supply, or an error condition has been detected in the operating voltages.

Status (labeled STAT)

Green On The router software has booted up, and the system is operational.

Off The router has not yet booted, or an error condition has been detected in the boot process.

Activity (labeled ACT)

Green On Packets are being transferred.

Off No activity is occurring.


OL-7872-04


Note In a redundant configuration, when the relays of the 2-port T1/E1-RAN close, the Data Carrier Detect LED on the T1 ports will remain on and the ALARM LED will go off. When the router is inactive, the Alarm LED will be on (as a result of no framing) and the Data Carrier Detect LED will be off.

Cisco MWR 1941-DC-A Rear ViewThe Cisco MWR 1941-DC-A router power connector (see the “Wiring the DC-Input Power Source” section on page 3-7), grounding nut/screw (see the “Connecting the Chassis Ground and Power” section on page 3-5, and the four fans are located on the rear panel (see Figure 1-5).

Table 1-2 Fast Ethernet Connector LEDs

LED Color State Status


Green On Data is being transmitted on the link.

Off No data is being transmitted.

Speed (labeled SPEED)

Green On A 100-Mbps communication speed has been attained.

Off Only a 10-Mbps communication speed has been attained, or no link has been established.

Link (labeled LINK)

Green On Ethernet link has been established.

Off No link has been established.

Table 1-3 2-port T1/E1-RAN LEDs


Alarm (labeled AL)

Amber On A local or remote alarm state exists.

Off The 2-port T1/E1-RAN is operating normally.

Loopback (labeled LP)

Amber On A loopback or line state has been detected or has been manually set by the user.

Off The 2-port T1/E1-RAN is operating normally.

Data Carrier Detect (labeled CD)

Green On A carrier has been detected, and the internal CSU/DSU in the 2-port T1/E1-RAN interface card is communicating with another CSU/DSU. This LED is on during normal operation.

Off No carrier has been detected.


OL-7872-04


Figure 1-5 Cisco MWR 1941-DC-A Router Rear View

Advance Integration Module for ATMThe 2-port T1/E1-RAN Optimization (VWIC-T1/EI-RAN) interface card provides redundancy support where the incoming bit stream is forwarded to a built-in (fixed) high performance advanced integration module for ATM (AIM-ATM or AIM-ATM-8) daughter card located on the motherboard of the Cisco MWR 1941-DC-A router.

The AIM for ATM cards perform framing and enhanced ATM segmentation and reassembly (SAR). This functionality includes normal SAR functions for ATM Adaptation Layer traffic as well as indications for resource management (RM) and operation and maintenance (OAM) cells. The AIM for ATM card then interrupts the CPU with reassembled ATM Adaptation Layer traffic packets for backhaul.

The AIM-ATM card supports up to four independent ATM links, or two Inverse Mutiplexing over ATM (IMA) groups. The AIM-ATM-8 card supports up to eight independent ATM links, or four IMA groups.

To determine which AIM is installed in your Cisco MWR-1941-DC-A router, use the show diagnostics command in privileged EXEC mode.

Fixed InterfacesThe Cisco MWR 1941-DC-A router has two fixed LAN ports for 10/100Base-T Ethernet attachment. The ports are fully compliant with the IEEE 802.3 and 802.3U standards. The ports integrate the MAC functions and a dual-speed media-dependent interface (MDI). Both ports can operate in half- or full-duplex mode and can run independently of one another. For each Fast Ethernet (FE) interface, there are two green LEDs, one for Link Integrity and one for Link Activity (for LED information, see Table 1-2 on page 1-9).

Powerconnector

Fan

Rack mount bracket(both sides)

Groundingnut/screw

6578

4


OL-7872-04

Chapter 1 Product Overview Cisco Network Modules

Interface CardsThe Cisco MWR 1941-DC-A router supports the following interface cards:

• 2-port T1/E1-RAN Optimization Interface Card: VWIC-2T1/E1-RAN for GSM and UMTS T1/E1 and IP Backhaul T1/E1

VWIC-2T1/E1-RAN

The 2-port T1/E1-RAN Optimization (VWIC-T1/EI-RAN) interface card supports GSM, UMTS, and IP Backhaul T1/E1. For UMTS, the RAN sends T1/E1 Iub ATM calls to the AIM for ATM SAR functions for ATM Adaptation Layer traffic for processing.

These cards are dual-port, T1/fractional T1 or E1/fractional E1, drop and insert multiplexers with integrated T1 CSU/DSUs or E1 DSUs. Each port can be used as a either a T1 or an E1 interface.

The VWIC-2T1/E1-RAN will allow you to compress, multiplex, and optimize your GSM-Abis radio traffic transmission across T1/E1 WAN connections used for backhaul between the cell site BTS and the BSC.

The Cisco MWR 1941-DC-A router provides three VWIC interface slots.

Additionally, by inserting an NM-2W network interface module into the network interface slot of the Cisco MWR 1941-DC-A router, you can add two more VWIC-2T1/EI-RAN cards.

Information is provided in separate publications.

• For information on the VWIC-2T1/E1-RAN VWICs, see the Cisco 2-port T1/E1-RAN Optimization Installation Instructions.

• For software configuration information, see the Cisco MWR 1941-DC-A Mobile Wireless Edge Router Software Configuration Guide.

These manuals are on Cisco.com (see the “Obtaining Documentation, Obtaining Support, and Security Guidelines” section on page xvi for more information).

Cisco Network ModulesFor implementation in a RAN-O solution with Cisco IOS Release 12.4(2)MR, the Cisco MWR 1941-DC-A router also supports the following Cisco network module:

• 2-port WAN Card Slot Network Module (no LAN): NM-2W(=)

– Supports up to two additional VWIC-2T1/E1-RAN cards

Additional information is provided in separate publications.

• For instructions on installing the network module and for details on the network module and its interfaces, see the Cisco Network Modules Hardware Installation Guide.

• For software configuration information (see the Cisco MWR 1941-DC-A Mobile Wireless Edge Router Software Configuration Guide).

These manuals are available online at Cisco.com (see the “Obtaining Documentation, Obtaining Support, and Security Guidelines” section on page xvi for more information).


OL-7872-04

Chapter 1 Product Overview Compact Flash Memory

Compact Flash MemoryOne internal 128MB fixed compact flash (CF) device is used on the Cisco MWR 1941-DC-A router. This CF device is not field upgradeable, it is only installed at the factory. This CF device is required for the Cisco MWR 1941-DC-A router to function because the Cisco IOS image and troubleshooting logs reside on the flash memory.

Power SupplyThe Cisco MWR 1941-DC-A router is equipped with a +27/-48 VDC (±20 to 60 VDC supply tolerance) universal power supply.

Safety PrecautionsObserve the following general safety precautions and recommendations in planning the source power requirements for the Cisco MWR 1941-DC-A router (for additional safety information, see the “Safety Guidelines” section on page 2-2):

• Check the power at your site before router installation (and periodically after installation) to ensure clean power is being received.

• Always disconnect the power source and unplug the power cable before working on the router.

• Install proper grounding for the site to avoid damage from lightning and power surges.

Warning To avoid electric shock, do not connect safety extra-low voltage (SELV) circuits to telephone-network voltage (TNV) circuits. LAN ports contain SELV circuits, and WAN ports contain TNV circuits. Some LAN and WAN ports both use RJ-45 connectors. Use caution when connecting cables. Statement 1021

Table 1-4 lists DC power supply specifications for the Cisco MWR 1941-DC-A router.

Table 1-4 Cisco MWR 1941-DC-A Router Power Supply Specifications

Specification +27/-48 VDC

Input voltage, DC power supply

Maximum input current

Note If the input voltage drops below 18.5 VDC, the router will go into shut down mode.

+27/-48 VDC (±20 to 60 VDC supply tolerance) universal power supply

3.5 A

Wire gauge for DC input power connections

18 AWG

Power dissipation 70 W (maximum), 35 W (typical)


OL-7872-04

Chapter 1 Product Overview Environmental Monitoring Temperature Sensor

The Cisco MWR 1941-DC-A router uses a small, three-wire connector (Phoenix Contact part number 1756272) for input to the power supply. The connector ships in the accessory kit.

With the connector installed in the chassis, the pins from top to bottom are 1, 2, and 3, respectively. Table 1-5 and Table 1-6 list the pinout configurations for the connector, based on the power source.

Environmental Monitoring Temperature SensorThe Cisco MWR 1941-DC-A router has a temperature sensor to detect overtemperature conditions inside the chassis. The overtemperature detection trips at 75°C +/- 5%. This condition is reported to the processor as an interrupt, where software takes action to generate the appropriate alarms. If the router reaches a temperature of 90°C, the power supply will cycle to prevent the router from exceeding that temperature while being powered up.

System SpecificationsTable 1-7 lists the system specifications for Cisco MWR 1941-DC-A router.

Table 1-5 Power Supply Connector Pinouts (+27 VDC Application)

Pin +27 VDC Power Source

1 +27 VDC

2 Ground

3 RTN

Table 1-6 Power Supply Connector Pinouts (-48 VDC Application)

Pin -48 VDC Power Source

1 RTN

2 Ground

3 -48 VDC

Table 1-7 Cisco MWR 1941-DC-A Router System Specifications

Description Specification

Dimensions (H x W x D) 1.72 x 17.5 x 12.5 in. (4.368 x 44.45 x 31.75 cm) 1 RU (rack unit) in a 19-in. rack

Weight 10.5 lb (4.77 kg)

Console and Auxiliary ports RJ-45 connector

Operating Temperature 14 to 131°F (-10 to + 55°C)

Non-Operational Temperature -40 to 185°F (-40 to 85°C)

Operating Humidity 5 to 90% RH (non-condensing)

Operating Altitude 9,842.5 ft. (3000 m) at 113°F (45°C)


OL-7872-04

Chapter 1 Product Overview Cisco MWR 1941-DC-A Router Interface Numbering

Cisco MWR 1941-DC-A Router Interface NumberingEach network interface on a Cisco MWR 1941-DC-A router is identified by a slot number and a port number. Figure 1-6 shows an example of the interface numbering on a Cisco MWR 1941-DC-A router.

Slot and Port NumberingThe Cisco MWR 1941-DC-A router chassis contains the following LAN and WAN interface types:

• Two built-in Fast Ethernet LAN interfaces (labeled FE0 and FE1)

• Three slots for installing 2-port T1/E1-RANs (labeled W0, W1, and W2)

• One slot for installing a network module

The logical slot numbers are as follows:

• 0 for all built-in interfaces

• 0 for all built-in 2-port T1/E1-RAN slots

• 1 for the network module slot

Figure 1-6 Cisco MWR 1941-DC-A Router Port Numbers

The numbering format is:

Interface type Slot number/Interface number

Interface (port) numbers begin at logical 0 for each interface type; ports are numbered from right to left.

Operating Vibration 0.41 Grms, 3 to 500 Hz/2 hr. per axisGR-63-CORE earthquake resistance, Zone 4, shelf-level

Non-Operational Vibration 1.12 Grms, 3 to 500 Hz/30 min. per axis

Operating Acoustics <60 dBa

Table 1-7 Cisco MWR 1941-DC-A Router System Specifications (continued)

Description Specification



CONSOLEAUXILIARYFE1

FE0

Console port

W2W1

W0

Serial 0/3Serial 0/2

Serial 0/1Serial 0/0

Auxiliary port

9267

8

Network moduleslot


OL-7872-04

Chapter 1 Product Overview Regulatory Compliance

• The two built-in Ethernet 10/100 interfaces are Fast Ethernet 0/0 and Fast Ethernet 0/1.

• The logical slot number for all 2-port T1/E1-RAN interfaces in the built-in 2-port T1/E1-RAN slot is always 0. (The W0, W1, and W2 slot designations are for physical slot identification only.) Interfaces in the 2-port T1/E1-RANs are numbered from right to left, starting with logical 0/0 for each interface type, regardless of the physical slot in which the 2-port T1/E1-RANs are installed.

For example, if you have a 2-port T1/E1-RAN in two of the 2-port T1/E1-RAN slots (physical W0 and W1), then the logical interfaces are:

– Serial 0/0 and Serial 0/1 in physical slot W0

– Serial 0/2 and Serial 0/3 in physical slot W1

However, if you install a 2-port T1/E1-RAN in physical slot W1 (leaving slot W0 empty), the logical interfaces in slot W1 are Serial 0/0 and Serial 0/1. If you later add a 2-port T1/E1-RAN to slot W0, the interface numbering shifts. The configuration that you created for logical interfaces Serial 0/0 and Serial 0/1 will now be applied to the 2-port T1/E1-RAN in physical slot W0, and you will need to create a new configuration for the logical interfaces that you previously configured on W1 (which will now be Serial 0/2 and Serial 0/3).

• The slot number of WIC/VWIC interfaces installed in slot 1 using a WAN network module is always 1, and the interfaces are always numbered from the right to left.

• The logical slot number for all network module interfaces is always 1, and the interfaces are always numbered from right to left, starting with 1/0.

Regulatory ComplianceFor regulatory compliance and safety information, see the Cisco Regulatory Compliance and Safety Information for the Cisco MWR 1941-DC-A Mobile Wireless Edge Router document. This document is available online at Cisco.com (see the “Obtaining Documentation, Obtaining Support, and Security Guidelines” section on page xvi for more information).


OL-7872-04

Chapter 1 Product Overview Regulatory Compliance


OL-7872-04


C H A P T E R2
Preparing to Install the Router
This chapter describes site requirements and equipment needed to install your Cisco MWR 1941-DC-A router. It includes the following sections:

• Safety Guidelines, page 2-2

• Before You Begin, page 2-4

• Site Planning, page 2-4

• Console and Auxiliary Port Considerations, page 2-9


Chapter 2 Preparing to Install the Router Safety Guidelines

Safety GuidelinesBefore you begin the installation of the Cisco MWR 1941-DC-A router, review the safety guidelines in this chapter, the “Safety Precautions” section on page 1-12, and the “Rack-Mounting Configuration Guidelines” section on page 3-3 to avoid injuring yourself or damaging the equipment.

In addition, before replacing, configuring, or maintaining the Cisco MWR 1941-DC-A router, review the safety warnings listed in the document Cisco Regulatory Compliance and Safety Information for the Cisco MWR 1941-DC-A Mobile Wireless Edge Router.

Safety with EquipmentThe following guidelines will help ensure your safety and protect the equipment. This list is not all- inclusive of all potentially hazardous situations, so be alert.

Warning Read the installation instructions before connecting the system to the power source. Statement 1004

• Always disconnect all power cords and interface cables before moving the system.

• Never assume that power is disconnected from a circuit; always check.

• Keep the chassis area clear and dust-free before and after installation.

• Keep tools and assembly components away from walk areas where you or others could fall over them.

• Do not work alone if potentially hazardous conditions exist.

• Do not perform any action that creates a potential hazard to people or makes the equipment unsafe.

• Do not wear loose clothing that may get caught in the chassis.

• Wear safety glasses when working under conditions that may be hazardous to your eyes.

Safety with Electricity

Warning Before performing any of the following procedures, ensure that power is removed from the DC circuit. Statement 1003

Warning This unit is intended for installation in restricted access areas. A restricted access area can be accessed only through the use of a special tool, lock and key, or other means of security. Statement 1017

Warning To avoid electric shock, do not connect safety extra-low voltage (SELV) circuits to telephone-network voltage (TNV) circuits. LAN ports contain SELV circuits, and WAN ports contain TNV circuits. Some LAN and WAN ports both use RJ-45 connectors. Statement 1021


OL-7872-04

Chapter 2 Preparing to Install the Router Safety Guidelines

Warning Before working on equipment that is connected to power lines, remove jewelry (including rings, necklaces, and watches). Metal objects will heat up when connected to power and ground and can cause serious burns or weld the metal object to the terminals. Statement 43

Warning Before working on a chassis or working near power supplies, unplug the power cord on AC units; disconnect the power at the circuit breaker on DC units. Statement 12

Warning Do not work on the system or connect or disconnect cables during periods of lightning activity. Statement 1001

Follow these guidelines when working on equipment powered by electricity:

• Locate the room’s emergency power-off switch. Then, if an electrical accident occurs, you can quickly turn off the power.

• Before working on the system, turn off the DC main circuit breaker and disconnect the power terminal block cable.

• Disconnect all power before doing the following:

– Working on or near power supplies

– Installing or removing a router chassis or network processor module

– Performing most hardware upgrades

• Never install equipment that appears damaged.

• Carefully examine your work area for possible hazards, such as moist floors, ungrounded power extension cables, and missing safety grounds.

• Never assume that power is disconnected from a circuit; always check.

• Never perform any action that creates a potential hazard to people or makes the equipment unsafe.

• If an electrical accident occurs, proceed as follows:

– Use caution, and do not become a victim yourself.

– Turn off power to the router.

– If possible, send another person to get medical aid. Otherwise, determine the condition of the victim, and then call for help.

– Determine whether the person needs rescue breathing or external cardiac compressions; then take appropriate action.

In addition, use the following guidelines when working with any equipment that is disconnected from a power source, but still connected to telephone wiring or network cabling:

• Never install telephone wiring during a lightning storm.

• Never install telephone jacks in wet locations unless the jack is specifically designed for it.

• Never touch un-insulated telephone wires or terminals unless the telephone line is disconnected at the network interface.

• Use caution when installing or modifying telephone lines.


OL-7872-04

Chapter 2 Preparing to Install the Router Before You Begin

Preventing Electrostatic Discharge DamageElectrostatic discharge (ESD) can damage equipment and impair electrical circuitry. ESD can occur when electronic printed circuit cards are improperly handled and can cause complete or intermittent failures. Always follow ESD prevention procedures when removing and replacing modules:

• Ensure that the router chassis is electrically connected to earth ground.

• Wear an ESD-preventive wrist strap, ensuring that it makes good skin contact. Connect the clip to an unpainted surface of the chassis frame to channel unwanted ESD voltages safely to ground. To guard against ESD damage and shocks, the wrist strap and cord must operate effectively.

• If no wrist strap is available, ground yourself by touching a metal part of the chassis.

Caution For the safety of your equipment, periodically check the resistance value of the antistatic wrist strap. It should be between 1 and 10 Mohm.

Before You BeginBefore installing the Cisco MWR 1941-DC-A router, it is important to prepare for installation by:

• Preparing the site (site planning) and reviewing the installation plans or method of procedures (MOPs)

• Unpacking and inspecting the Cisco MWR 1941-DC-A router

• Gathering tools and test equipment required to properly install the Cisco MWR 1941-DC-A router

Site PlanningTypically, you should have prepared the installation site beforehand. As part of your preparation, obtain a floor plan of the site and the equipment rack where the Cisco MWR 1941-DC-A router will be housed. Determine the location of any existing routers and their interconnections, including communications and power. Following the air flow guidelines (see the “Air Flow Guidelines” section on page 2-5) ensures that adequate cooling air is provided to the Cisco MWR 1941-DC-A router.

All personnel involved in the installation of the Cisco MWR 1941-DC-A router including installers, engineers, and supervisors should participate in the preparation of a MOP for approval by the customer.

Power Supply ConsiderationsCheck the power at your site to ensure that you are receiving “clean” power (free of spikes and noise). Install a power conditioner if necessary (see the “Power Supply” section on page 1-12 for power requirements).

Warning This equipment has been designed for connection to TN and IT power systems. Statement 16


OL-7872-04

Chapter 2 Preparing to Install the Router Site Planning

Site EnvironmentThe Cisco MWR 1941-DC-A router is installed in an equipment rack. The location of your router and the layout of your equipment rack or wiring room are extremely important considerations for proper operation. Equipment placed too close together, inadequate ventilation, and inaccessible panels can cause malfunctions and shutdowns, and can make maintenance difficult. Plan for access to front and rear panels of the router.

The following precautions will help you plan an acceptable operating environment for your router and will help you avoid environmentally caused equipment failures:

• Ensure that the room where your router operates has adequate circulation. Electrical equipment generates heat. Without adequate circulation, ambient air temperature may not cool equipment to acceptable operating temperatures (see the “Air Flow Guidelines” on this page).

• Always follow ESD-prevention procedures described in the “Preventing Electrostatic Discharge Damage” section on page 2-4 to avoid damage to equipment. Damage from static discharge can cause immediate or intermittent equipment failure.

Air Flow GuidelinesTo ensure adequate air flow through the equipment rack, it is recommended that you maintain a clearance of at least 6 inches (15.24 cm) in the front and the rear of the rack at all times.

If airflow through the equipment rack and the routers that occupy it is blocked or restricted, or if the ambient air being drawn into the rack is too warm, an overtemperature condition within the rack and the routers that occupy it can occur.

The site should also be as dust-free as possible. Dust tends to clog the router fans, reducing the flow of cooling air through the equipment rack and the routers that occupy it. Thus, increasing the risk of an overtemperature condition.

Additionally, the following guidelines will help you plan your equipment rack configuration:

• Mount the Cisco MWR 1941-DC-A router in a 19-inch rack (with a 17.5- or 17.75-inch opening).

• Beside air flow, you must allow clearance around the rack for maintenance.

• Enclosed racks must have adequate ventilation. Ensure that the rack is not congested, because each router generates heat. An enclosed rack should have louvered sides and a fan to provide cooling air. Heat that is generated by equipment near the bottom of the rack can be drawn upward into the intake ports of the equipment above.

• When mounting a chassis in an open rack, ensure that the rack frame does not block the front left and right front intakes or the rear exhaust fans.

• When rack-installed equipment fails, especially equipment in an enclosed rack, try operating the equipment by itself, if possible. Power off other equipment in the rack (and in adjacent racks) to give the router a maximum of cooling air and clean power.


OL-7872-04


Method of ProcedureAs described previously, part of your preparation includes reviewing installation plans or MOPs. An example of a MOP (pre-installation checklist of tasks and considerations that needs to be addressed and agreed upon before proceeding with the installation) is as follows:

1. Assign personnel.

2. Determine protection requirements for personnel, equipment, and tools.

3. Evaluate potential hazards that may affect service.

4. Schedule time for installation.

5. Determine any space requirements.

6. Determine any power requirements.

7. Identify any required procedures or tests.

8. On an equipment plan, make a preliminary decision that locates each Cisco MWR 1941-DC-A router that you plan to install.

9. Read this hardware installation guide.

10. Verify the list of replaceable parts for installation (screws, bolts, washers, and so on) so that the parts are identified.

11. Check the required tools list to make sure the necessary tools and test equipment are available (see the “Required Tools and Equipment” section on page 2-7).

12. Perform the installation.

Unpacking and Checking the Contents of your ShipmentThe shipping package for the Cisco MWR 1941-DC-A router is designed to reduce the possibility of product damage associated with routine material handling experienced during shipment. To reduce the potential damage to the product, transport the Cisco MWR 1941-DC-A router in its Cisco-specified packaging. Failure to do so may result in damage to the Cisco MWR 1941-DC-A router. Also do not remove the Cisco MWR 1941-DC-A router from its shipping container until you are ready to install it.

Note Do not discard the packaging materials used in shipping your Cisco MWR 1941-DC-A router. You will need the packaging materials in the future if you move or ship your Cisco MWR 1941-DC-A router.

The Cisco MWR 1941-DC-A router, cables, and any optional equipment you ordered may be shipped in more than one container. When you unpack the containers, check the packing list to ensure that you received all the following items:

• Router

• Black 3-pin power terminal block connector (Phoenix part number 1756272) located in the accessory kit that shipped with your router

• Rack-mount bracket kit (if not installed at factory); includes rack-mount brackets (2) and #8-32 x 0.37-inch flat pan-head screws (7) includes 1 spare

• The Documentation DVD, as specified in your order

• Cisco Information Packet publication


OL-7872-04


Inspect all items for shipping damage. If anything appears to be damaged, or if you encounter problems installing or configuring your router, contact customer service. The Cisco Information Packet provides warranty, service, and support information.

Required Tools and EquipmentYou need the following tools and equipment to install and upgrade the router and its components:

Warning Only trained and qualified personnel should be allowed to install or replace this equipment. Statement 49

• ESD-preventive cord and wrist strap.

• Number 2 Phillips screwdriver.

• Flat-blade screwdrivers: small, 3/16-inch (0.476 cm) and medium, 1/4-inch (0.625 cm).

– To install or remove modules

– To remove the cover, if you are upgrading memory or other components

• #12-24 pan-head screws to secure the router to your equipment rack.

• Cables for connection to the WAN and LAN ports (depending on the configuration).

Note For more information on cable specifications, see Appendix B, “Cable Specifications.”

• Ethernet hub or PC with a network interface card for connection to the Ethernet (LAN) port(s).

• Console terminal (an ASCII terminal or a PC running terminal emulation software) that is configured for 9600 baud, 8 data bits, no parity, and 2 stop bits.

• Modem for connection to the auxiliary port for remote administrative access (optional).

• Console cable for connection to the console port. You can supply this cable yourself or order one from Cisco Systems, Inc. (part number ACS-1900ASYN=).

• Ratcheting torque screwdriver with a Phillips head that exerts up to 15 pound-force inches (lbf-in) of pressure.

• Crimping tool as specified by the ground lug manufacturer.

• 10-AWG copper ground wire (insulated or noninsulated).

• #6, ring-style ground lug.

• 18-AWG copper wire for the power cord.

• Wire-stripping tool(s) for stripping both 10- and 18-AWG wire.

• Serial interfaces may require a data service unit (DSU) or channel service unit/data service unit (CSU/DSU).


OL-7872-04


Installation ChecklistTo assist you with your installation and to provide a historical record of what was done, and by whom, use the following Installation Checklist. Make a copy of this checklist and mark the entries as you complete each task. When the checklist is completed, include a copy of the checklist for each router in your Site Log (see the “Creating a Site Log” section on page 2-9 for information about creating a Site Log) along with other records for your new router.

Installation Checklist for Site:

Router Name:

Task Verified by Date

Installation Checklist copied

Background information placed in Site Log

Site power voltages verified

Installation site power check completed

Required tools available

Additional equipment available

Router received

DVD documentation received

Cisco Information Packet publication received

Chassis components verified

Initial electrical connections established

ASCII terminal (for local configuration) or modem (for remote configuration)

Signal distance limits verified

Startup sequence steps completed

Initial operation verified

Software image verified


OL-7872-04

Chapter 2 Preparing to Install the Router Console and Auxiliary Port Considerations

Creating a Site LogThe Site Log (see Appendix C, “Site Log” for a sample Site Log) provides a record of all actions related to installing and maintaining the router. Keep it in an accessible place near the chassis so that anyone who performs tasks has access to it. Use the Installation Checklist (see the previous section, “Installation Checklist”) to verify the steps in the installation and maintenance of your router. Site Log entries might include the following:

• Installation progress—Make a copy of the Cisco MWR 1941-DC-A router Installation Checklist, and insert it into the Site Log. Make entries as you complete each task.

• Upgrade, removal, and maintenance procedures—Use the Site Log as a record of ongoing router maintenance and expansion history. Each time a task is performed on the Cisco MWR 1941-DC-A router, update the Site Log to reflect the following:

– Installation of network modules (NM-2W)

– Removal or replacement of network modules and other upgrades

– Installation of 2-port T1/E1-RAN interface cards

– Removal or replacement of 2-port T1/E1-RAN interface cards

– Configuration changes

– Maintenance schedules and requirements

– Maintenance procedures performed

– Intermittent problems

– Comments and notes

Console and Auxiliary Port ConsiderationsThe router includes an asynchronous serial console port and an auxiliary port which provide access to the router either locally (using a console terminal), or remotely (using a modem connected to the auxiliary port). This section describes important cabling information to consider before connecting a console terminal—either an ASCII terminal or a PC running terminal emulation software—to the console port or connecting a modem to the auxiliary port.

The main difference between the console port and the auxiliary port is that the auxiliary port supports hardware flow control and the console port does not. Flow control paces the transmission of data between a sending device and a receiving device. Flow control ensures that the receiving device can process all the data sent to it before the sending device sends more data. When the buffers on the receiving device are full, a message is sent to the sending device to suspend transmission until the data in the buffers has been processed. Because the auxiliary port supports flow control, it is suited for use with the high-speed transmissions of a modem. Console terminals transmit at slower speeds than modems; therefore, the console port is suited for use with console terminals.

Note Console and rollover cables are not included with the Cisco MWR 1941-DC-A router. You can order the console cable from Cisco Systems (part number ACS-1900ASYN=). You must supply your own rollover cable.


OL-7872-04

Chapter 2 Preparing to Install the Router Console and Auxiliary Port Considerations

Console Port ConnectionsThe router includes an EIA/TIA-232 asynchronous serial console port (RJ-45). Depending on the cable and the adapter used, this port will appear as a data terminal equipment (DTE) or data communications equipment (DCE) device at the end of the cable.

To connect an ASCII terminal to the console port, use the RJ-45 rollover cable with the female RJ-45-to-DB-25 adapter (labeled TERMINAL). To connect a PC running terminal emulation software to the console port, use the RJ-45 rollover cable with the female RJ-45-to-DB-9 adapter (labeled TERMINAL). The default parameters for the console port are 9600 baud, 8 data bits, no parity, and 2 stop bits. The console port does not support hardware flow control. For instructions on installing a console terminal, see the “Connecting the Console (Terminal) and Auxiliary (Modem) Ports” section on page 3-8.

For cable and port pinouts, see the online document Cisco Modular Access Router Cable Specifications. This document is provided on the Documentation DVD that accompanied your router, and is also available online at Cisco.com.

Auxiliary Port ConnectionsThe router includes an EIA/TIA-232 asynchronous serial auxiliary port (RJ-45) that supports flow control. Depending on the cable and the adapter used, this port will appear as either a DTE or DCE device at the end of the cable.

To connect a modem to the auxiliary port, use an RJ-45 rollover cable with the male RJ-45-to-DB-25 adapter (labeled MODEM). For instructions on connecting devices to the auxiliary port, see the “Connecting the Console (Terminal) and Auxiliary (Modem) Ports” section on page 3-8.

For cable and port pinouts, see the online document Cisco Modular Access Router Cable Specifications. This document is provided on the Documentation DVD that accompanied your router, and is also available online at Cisco.com.


OL-7872-04


C H A P T E R3
Installing the Cisco MWR 1941-DC-A Router
This chapter describes how to install your Cisco MWR 1941-DC-A router and how to connect it to networks and external devices. This chapter contains the following sections:

• Network Modules and Interface Cards, page 3-2

• Mounting the Cisco MWR 1941-DC-A Router, page 3-2

• Connecting the Chassis Ground and Power, page 3-5

• Connecting the Console (Terminal) and Auxiliary (Modem) Ports, page 3-8

• Connecting the Network Cables, page 3-10

• What to Do After Installing the Hardware, page 3-20

Warning Only trained and qualified personnel should be allowed to install, replace, or service this equipment. Statement 1030

Warning This unit is intended for installation in restricted access areas. A restricted access area can be accessed only through the use of a special tool, lock and key, or other means of security. Statement 1017


Chapter 3 Installing the Cisco MWR 1941-DC-A Router Network Modules and Interface Cards

Network Modules and Interface CardsCisco routers are normally shipped with the NM-2W network modules and the 2-port T1/E1-RAN interface card already installed. If you need to remove or install any of these items, refer to the applicable documents online.

For the NM-2W network modules:

• Quick Start Guide: Network Modules for Cisco 2600 Series, Cisco 3600 Series, Cisco 3700 Series, and Cisco MWR 1941-DC-A Routers

• Cisco Network Modules Hardware Installation Guide

For the Cisco 2-port T1/E1-RAN interface card:

• Cisco 2-port T1/E1-RAN Optimization Installation Instructions

Note If NM-2W or Cisco 2-port T1/E1-RAN interface card needs to be removed or installed, we recommend that you perform the installation or removal before you install the chassis.

If the required NM-2W network module or Cisco 2-port T1/E1-RAN interface card is already installed, proceed to the next section “Mounting the Cisco MWR 1941-DC-A Router”.

Mounting the Cisco MWR 1941-DC-A RouterEach Cisco MWR 1941-DC-A router has rack-mounting brackets installed at the factory. If your router did not come with the rack-mounting brackets installed, the rack-mounting bracket kit may have been separately packaged with your router (see the “Required Tools and Equipment” section on page 2-7 for a description of the packaged hardware. You can only front (flush) mount the Cisco MWR 1941-DC-A router in a 19-inch (48.3-cm) equipment rack that conforms to the EIA-310-D specification (the inside width of the rack should be 17.72 to 17.80 inches [45 to 45.21 cm]). Mount the Cisco MWR 1941-DC-A router to the brackets as described in the “Attaching the Rack-Mounting Brackets” section on page 3-3. The rack-mounting brackets are slotted to allow the router to be mounted in racks with EIA 1.25-inch (3.81-cm) or WECO 1.0-inch (2.54-cm) hole spacing. When installed in the rack, the Cisco MWR 1941-DC-A router requires one EIA 1.75-inch (4.4-cm) vertical mounting space (or 1 rack unit [RU]) for mounting (see the “Mounting the Cisco MWR 1941-DC-A Router in a Rack” section on page 3-4).

Caution Clearance in the front and rear of the Cisco MWR 1941-DC-A router must be allowed for cooling air to be drawn in through the left and right front sides and circulated through the chassis and out the four fan exhaust ports mounted on the rear of the chassis.


OL-7872-04

Chapter 3 Installing the Cisco MWR 1941-DC-A Router Mounting the Cisco MWR 1941-DC-A Router

Rack-Mounting Configuration GuidelinesThe following information will help you plan your equipment rack configuration:

• When mounting the router to an equipment rack, ensure that the rack is bolted to the floor.

• Since you will probably be installing more than one router into the rack, ensure that the weight of all the routers installed does not make the rack unstable.

Caution Some equipment racks are also secured to ceiling brackets, if necessary, due to the weight of the equipment in the rack. Make sure that the rack you are using to install the routers is secured to the building structure.

• As mentioned in the “Air Flow Guidelines” section on page 2-5, maintain a 6-inch (15.2-cm) clearance at the front and rear of the router to ensure adequate air intake and exhaust.

• Avoid installing the routers in an overly congested rack. Air flowing to or from other routers in the rack might interfere with the normal flow of cooling air through the routers, increasing the potential for overtemperature conditions within the routers.

• Allow at least 19 inches (48.7 cm) of clearance at the front and rear of the rack for router maintenance.

• Follow your local practices for cable management. Ensure that cables to and from the routers do not impede access to perform equipment maintenance or upgrades.

Attaching the Rack-Mounting BracketsYou rack-mount a Cisco MWR 1941-DC-A router with the front of the chassis facing forward. The rack-mounting brackets and six #8-32 x 0.37-inch screws are provided in a rack-mounting bracket kit (Cisco part number 69-0791-01). Use a Number 2 Phillips screwdriver to install the rack-mounting bracket screws.

Perform the following procedure to mount the Cisco MWR 1941-DC-A router to the rack-mounting brackets for a 19-inch (48.3-cm) equipment rack.

Step 1 Locate the mounting holes of the Cisco MWR 1941-DC-A router for the mounting (see Figure 3-1).

Step 2 Align the rack-mounting bracket with the Cisco MWR 1941-DC-A router and position with the three #8-32 x 0.37-inch screws (provided).

Step 3 Insert the screws (three places) and tighten using a Number 2 Phillips screwdriver.

Step 4 Repeat Steps 2 and 3 for the other rack-mounting bracket.

Step 5 You are now ready to install the Cisco MWR 1941-DC-A router into the equipment rack.


OL-7872-04

Chapter 3 Installing the Cisco MWR 1941-DC-A Router Mounting the Cisco MWR 1941-DC-A Router

Figure 3-1 Attaching the Bracket

Proceed to the next section, “Mounting the Cisco MWR 1941-DC-A Router in a Rack” to continue the installation.

Mounting the Cisco MWR 1941-DC-A Router in a RackTypically, the Cisco MWR 1941-DC-A router mounts to a 19-inch (48.3-cm) two-post equipment rack with rack-mounting brackets that attach to the front sides of the router. The inside width between the two posts or mounting strips (left and right) must be at least 17.5 inches (44.45 cm), see “Hardware Description” section on page 1-6 for information about the equipment rack.

Even though the inlet and exhaust ports for cooling air are located on the left and right front sides and on the rear of the Cisco MWR 1941-DC-A router, respectively, it is recommended that multiple routers be stacked in a rack with at least a 1-inch (2.54-cm) vertical clearance. This is due to the location of the AIM for ATM daughter card in the router and the tendency of the power cables to press on the location of the AIM for ATM card when installed.

To secure the Cisco MWR 1941-DC-A router to the equipment rack, you must use the four mounting screws (provided) for each side or follow your local practices for installing the router into your equipment rack. Ensure that the rack-mount brackets have been securely fastened (see the “Attaching the Rack-Mounting Brackets” section on page 3-3 for more information.

To mount the Cisco MWR 1941-DC-A router into the equipment rack, perform the following procedure.

Caution To prevent injury, review the “Safety Guidelines” section on page 2-2 and the “Rack-Mounting Configuration Guidelines” section on page 3-3 before installing the Cisco MWR 1941-DC-A router in the equipment rack.

Step 1 Locate the equipment rack position you plan to install the Cisco MWR 1941-DC-A router into.

Step 2 Verify that there are no obstructions and ensure that the equipment rack is stabilized.

Step 3 Position the Cisco MWR 1941-DC-A router in the equipment rack lining up the bracket holes on the router with the holes on the rack and secure with four #12-24 x 0.37-inch mounting screws (each side).


BEFORE INSTALLATIONDSU56K

CONSOLEAUXILIARY

Rack-mount bracket

6578

5


OL-7872-04

Chapter 3 Installing the Cisco MWR 1941-DC-A Router Connecting the Chassis Ground and Power

Note The vertical spacing for EIA equipment racks is 1.75 inches (4.44 cm), with mounting holes spaced 1.5 inches (3.81 cm) apart. Vertical spacing for WECO racks is 2.0 inches (5.08 cm), with mounting holes spaced 1.0 inch (2.54 cm) apart.

Step 4 Tighten the screws using a 1/4-inch flat-blade screwdriver (each side).

Proceed to the next section, “Connecting the Chassis Ground and Power”, to continue the installation.

Connecting the Chassis Ground and PowerBefore you connect power or turn on power to the Cisco MWR 1941-DC-A router, you must provide an adequate chassis ground (earth) connection to your router.

Grounding ConnectionsTo ensure the chassis ground connection that you provide is adequate, you will need the following parts and tools:

• Ratcheting torque screwdriver with a Phillips head that exerts up to 15 pound-force inches (lbf-in) of pressure.

• Crimping tool as specified by the ground lug manufacturer.

• 10 AWG copper ground wire (insulated or noninsulated).

• 18 AWG copper wire for the power cord.

• Wire-stripping tool(s) for stripping both 10- and 18-AWG wire.

Caution Before making connections to the Cisco MWR 1941-DC-A router, ensure that you disconnect the power at the circuit breaker. Otherwise severe injury or damage to the router may result.

The chassis ground (earth) connection is marked on the rear panel of the Cisco MWR 1941-DC-A router for ease of installation (see Figure 3-2 on page 3-6).

Warning This equipment must be grounded. Never defeat the ground conductor or operate the equipment in the absence of a suitably installed ground conductor. Contact the appropriate electrical inspection authority or an electrician if you are uncertain that suitable grounding is available. Statement 1024

Warning Use copper conductors only. Statement 1025

Warning When installing the unit, the ground connection must always be made first and disconnected last. Statement 42


OL-7872-04


Figure 3-2 Cisco MWR 1941-DC-A Router Rear View

Follow these procedures to ground the router to earth ground. Ensure you follow any grounding requirements at your site.

Step 1 Remove the grounding screw/nut (ground-lug screw) from the rear panel of the router (see Figure 3-2 on page 3-6). Use a standard Phillips screwdriver or a ratcheting torque screwdriver with a Phillips head.

Step 2 Set the screw aside.

Step 3 If your ground wire is insulated, use a wire-stripping tool to strip the 10-AWG ground wire to 0.5 inch ± 0.02 inch (12.7 mm ±0.5 mm) for the ground lug or ring terminal (see Figure 3-3).

Figure 3-3 Stripping a Ground Wire

Step 4 Slide the open end of your ground lug or ring terminal over the exposed area of the 10-AWG wire.

Step 5 Using a crimping tool (as specified by the ground lug manufacturer), crimp the ground lug or ring terminal to the 10-AWG wire (see Figure 3-4).

Powerconnector

Fan

Rack mount bracket(both sides)

Groundingnut/screw

6578

4Insulation

Wire lead

0.5 in. (12.7 mm) ± 0.02 in. (0.5 mm)

6052

8


OL-7872-04


Figure 3-4 Crimping a Ground Lug onto the Ground Wire

Step 6 Use the screw to attach the ground lug or ring terminal and wire assembly to the rear of the router.

Step 7 Using a ratcheting torque screwdriver, torque the ground-lug screw to 15 1bf-in (or 240 ounce-force inches [240 ozf-in]).

Step 8 Connect the other end of the ground wire to a suitable grounding point at your site.

Proceed to the next section, “Power Connections”, to continue the installation.

Power Connections

Warning Before performing any of the following procedures, ensure that power is removed from the DC circuit. Statement 1003

Warning Use copper conductors only. Statement 1025

Note The installation must comply with the 2002 National Electric Code (NEC) and other applicable codes.

Wiring the DC-Input Power Source

Warning This product relies on the building’s installation for short-circuit (overcurrent) protection. Ensure that the protective device is rated not greater than: 10 A minimum, 60 VDC. Statement 1005

To connect the DC power supply to the Cisco MWR 1941-DC-A router, do the following:

Step 1 Turn off the DC power source at the circuit breaker, and tape the circuit breaker in the OFF position.

6052

9


OL-7872-04

Chapter 3 Installing the Cisco MWR 1941-DC-A Router Connecting Cables

Step 2 Plug the 3-pin black terminal block connector (Phoenix part number 1756272; located in the accessory kit that shipped with the router) into the power connector located on the rear left-hand side of the router (looking at the router from the rear), see Figure 3-2 on page 3-6.

Step 3 Connect one end of the customer-supplied power cord (18-AWG copper wire) to the site DC power source.

Step 4 Plug the connector on the power supply cord into the 3-pin black terminal block connector that you plugged into the rear of the router in Step 2.

Warning An exposed wire lead from a DC-input power source can conduct harmful levels of electricity. Be sure that no exposed portion of the DC-input power source wire extends from the terminal block plug. Statement 122

Warning Secure all power cabling when installing this unit to avoid disturbing field-wiring connections. Statement 38

Caution DO NOT power on the unit, yet.

Proceed to the next section, “Connecting Cables”, to continue the installation.

Connecting CablesThis section describes how to connect your Cisco MWR 1941-DC-A router to external devices and networks. It includes the following sections:

• Connecting the Console (Terminal) and Auxiliary (Modem) Ports, page 3-8

• Connecting the Network Cables, page 3-10

Connecting the Console (Terminal) and Auxiliary (Modem) Ports

Warning Do not work on the system or connect or disconnect cables during periods of lightning activity. Statement 1001

Your Cisco MWR 1941-DC-A router has a DCE-mode console port for connecting a console terminal, and a DTE-mode auxiliary port for connecting a modem or other DCE device (such as, a CSU/DSU or other router) to your router.

Note Both the console and auxiliary ports are asynchronous serial ports; any devices connected to these ports must be cabled for asynchronous transmission. (Asynchronous is the most common type of serial device; for example, most modems are asynchronous devices.)

The Cisco MWR 1941-DC-A router uses RJ-45 ports for both the auxiliary port and console port.


OL-7872-04


Cisco provides the following cables and adapters for connecting your Cisco MWR 1941-DC-A router to a console terminal, PC, or modem:

• One console adapter cable (RJ-45-to-DB-9, blue)

• One modem adapter cable (RJ-45-to-DB-25, black)

Types of RJ-45 Cables

Cisco products use the following three types of RJ-45 cables:

• Straight-through

• Crossover

• Rolled (or Rollover)

Your Cisco MWR 1941-DC-A router ships with and uses the rollover cable (see the next section “Identifying a Rollover Cable” for a detailed description of how to identify a rollover cable).

Identifying a Rollover Cable

Use a rollover cable to connect to the asynchronous serial console and auxiliary ports. You can identify a rollover cable by comparing the two modular ends of the cable. Holding the cables side-by-side, with the tab at the rear, the wire connected to the pin on the outside of the left plug should be the same color as the wire connected to the pin on the outside of the right plug (see Figure 3-5 on page 3-9). If your cable came from Cisco, pin 1 will be white on one connector, and pin 8 will be white on the other (a rollover cable reverses pins 1 and 8, 2 and 7, 3 and 6, and 4 and 5).

Figure 3-5 Identifying a Rollover Cable

Pin 1 Pin 8

H38

24

Pin 1 and pin 8should be the

same color


OL-7872-04


Console Port

Follow these steps to connect a terminal or a PC running terminal emulation software to the console port on the router:

Step 1 Connect the terminal using an RJ-45 rollover cable and an RJ-45-to-DB-25 or RJ-45-to-DB-9 adapter (labeled TERMINAL) to the console port. For cable pinouts, see the “Console Port Signals and Pinouts” section on page B-2.

Note The RJ-45-to-DB-25 adapter (Cisco part number 29-0810-01) can be purchased from Cisco Systems.

Step 2 Configure your terminal or terminal emulation software for 9600 baud, 8 data bits, no parity, and 2 stop bits.

Note Because hardware flow control is not possible on the console port, we do not recommend connecting modems to the console port. Modems should always be connected to the auxiliary port.

Auxiliary Port

Follow these steps to connect a modem to the auxiliary port on the router:

Step 1 Connect a modem to the auxiliary port using an RJ-45 rollover cable with an RJ-45-to-DB-25 adapter. The provided adapter is labeled MODEM. For cable pinouts, see the “Auxiliary Port Signals and Pinouts” section on page B-3 of this guide or the online publication Cisco Modular Access Router Cable Specifications available on the Documentation DVD and online at Cisco.com.

Step 2 Make sure that your modem and the router auxiliary port are configured for the same transmission speed (a speed of sup to 115200 bps is supported) and hardware flow control with Data Carrier Detect (DCD) and Data Terminal Ready (DTR) operation.

Connecting the Network CablesThis section describes how to connect the following router interfaces:

• Connecting the Fixed Fast Ethernet Interface Cable, page 3-11

• Connecting the Cisco 2-port T1/E1-RAN (VWIC-2T1/E1-RAN) Interface Cables, page 3-11

• Cable-Management, page 3-14


OL-7872-04


Connecting the Fixed Fast Ethernet Interface Cable

The RJ-45 port supports standard straight-through and crossover Category 5 unshielded twisted-pair (UTP) cables. Cisco Systems does not supply Category 5 UTP cables; these cables are available commercially.

Follow these steps to connect the cable to the router Fast Ethernet (FE) port:

Step 1 Confirm that the router is turned off.

Step 2 Connect one end of the cable to the FE port on the router.

Step 3 Connect the other end to the BTS patch or demarcation panel at your site.

Figure 3-6 shows the RJ-45 port and connector.

Figure 3-6 RJ-45 Port and Plug

Figure 3-6 on page 3-11 lists the pinouts and signals for the RJ-45 port.

Connecting the Cisco 2-port T1/E1-RAN (VWIC-2T1/E1-RAN) Interface Cables

How you connect the ports of Cisco 2-port T1/E1-RAN depends on whether you are using the router in a redundant or non-redundant configuration.

For redundant configurations, use a Y-cable (see the “Y-Cable Specifications” section on page 3-13).

Note You must configure HSRP (Hot Standby Router Protocol) and the Y-cable mode for redundancy to allow one router to become active (CD LED on, AL LED off) and the other to become the standby router (CD LED off, AL LED on due to no framing). For more information, refer to the Cisco MWR 1941-DC-A Mobile Wireless Edge Router Software Configuration Guide.

Step 1 Confirm that both routers are turned off by ensuring that the circuit breaker on the panel board is in the OFF position with the handle taped in the OFF position.

H29

368 7 6 5 4 3 2 1

RJ-45 connector

Table 3-1 RJ-45 Pinout

Pin Description

1 Receive Data + (RxD+)

2 RxD-

3 Transmit Data + (TxD+)

6 TxD-


OL-7872-04


Step 2 Connect the end of one of the Y-cable stubs to the T1 or E1(RJ-48C) port on the Cisco 2-port T1/E1-RAN on the first router.

Step 3 Connect the end of the other Y-cable stub to the T1 or E1 (RJ-48C) port (using the same type of port as in step 2) on the 2-port T1/E1-RAN in the second router.

Step 4 Connect the other end of the Y-cable to the BTS patch or demarcation panel at your site.

Step 5 Remove the tape from the circuit breaker switch handle and reinstate power by moving the handle of the circuit breaker to the ON position.

Step 6 Check that the CD LEDs go on, which means that the 2-port T1/E1-RANs internal CSU/DSU is communicating with the CSU/DSU at the T1 or E1 service provider central office.

For non-redundant configurations, use a straight-through, shielded RJ-48C-to-RJ-48C cable.

Note If you choose to use the Cisco 2-port T1/E1-RAN in a non-redundant configuration, you must close the relays on the card using the standalone subcommand. For more information, see the Cisco MWR 1941-DC-A Mobile Wireless Edge Router Software Configuration Guide.

Step 1 Confirm that the router is turned off.

Step 2 Connect one end of the cable to the T1 or E1 (RJ-48C) port on the 2-port T1/E1-RAN card.

Step 3 Connect the other end to the BTS patch or demarcation panel at your site.

Step 4 Turn on power to the router (see “Powering Up the Router” section on page 3-14 for more details).

Step 5 Check that the router CD LED lights, which means that the card’s internal CSU/DSU is communicating with the CSU/DSU at the T1 or E1 service provider central office.

The 2-port T1/E1-RAN uses an RJ-48C connection, as shown in Figure 3-7.

Figure 3-7 RJ-48C Connection

Table 3-2 on page 3-13 shows the pinout configuration for the RJ-48C connectors on the Cisco 2-port T1/E1-RAN card for both the shielded and unshielded cables for either T1 or E1.

Note Cisco recommends using a shielded cable for your RJ-48C connectors.

2493

98 7 6 5 4 3 2 1

RJ-48C connector


OL-7872-04


Y-Cable Specifications

As described in the “Connecting the Cisco 2-port T1/E1-RAN (VWIC-2T1/E1-RAN) Interface Cables” section on page 3-11 depending on the Cisco MWR 1941-DC-A router implementation, the 2-port T1/E1-RAN can be used in a standalone Cisco MWR 1941-DC-A router. For redundant configurations in a RAN-O implementation, the configurations require a special Y-cable for connecting the active and standby routers. The Y-cable provides a dual E1 or T1 PRI connection (see Figure 3-8 on page 3-13).

The following are the specifications for the Y-cable used in redundant configurations in a RAN-O implementation:

• 2-port T1/E1-RAN Y-cables should be made with four twisted-pair, shielded, 28-gauge cables.

• The cable length of each stub (from the RJ-48C connector to the junction point) should not exceed 3 inches (7.62 cm).

• The cable length from junction point to the patch panel is determined by the customer.

Figure 3-8 Y-Cable Specifications

• All signals that propagate in the same direction must share the same twisted pair. For example, RX TIP and RX RING must form a single twisted pair.

• All unused twisted pairs should be cut flush on both ends of the cable. Any unused wire in a twisted pair in which one wire is in use should be cut flush at both ends.

Table 3-2 RJ-48C Pinout for Shielded and Unshielded Cables

Shielded Unshielded

Pin Description Pin Description

1 Receive ring 1 Receive ring

2 Receive tip 2 Receive tip

3 Receive shield 3

4 Transmit ring 4 Transmit ring

5 Transmit tip 5 Transmit tip

6 Transmit shield 6

7 Not used 7

8 Not used 8

Stubs

Y-Cable

Patch panel

Junction point

MWR 1941-DC-A

MWR 1941-DC-A

9266

4

E1/T1

E1/T1


OL-7872-04

Chapter 3 Installing the Cisco MWR 1941-DC-A Router Powering Up the Router

Cable-ManagementAll Cisco router cables should be properly dressed so as not to interfere with each other or other pieces of equipment. Use local practices to ensure that the cables attached to your router are properly dressed.

Proceed to the next section, “Powering Up the Router” to continue the installation.

Powering Up the Router

Warning Do not touch the power supply when the power cord is connected. For systems with a power switch, line voltages are present within the power supply even when the power switch is off and the power cord is connected. For systems without a power switch, line voltages are present within the power supply when the power cord is connected. Statement 4

Warning This equipment is intended to be grounded. Ensure that the host is connected to earth ground during normal use. Statement 39

Checklist for Power UpYou are ready to power up the Cisco MWR 1941-DC-A router if the following steps are complete:

• Router is securely mounted.

• Power, network, and interface cables are properly connected.

Front-Panel LEDsThe following LEDs provide power, activity, and status information:

Chassis LEDs

• Power (PWR), green:

– On when power is on.

– Off when power is off or error condition has been detected in the operating voltages.

• Status (STAT), green:

– On when router software has booted up, and the system is operational.

– Off when router has not yet booted, or an error condition has been detected in the boot process.

• Activity (ACT), green:

– On when packets are transferring

– Off when no packets are transferring

Fast Ethernet Connector LEDs

• Activity (ACT), green:

– On when data is being transmitted on the link.


OL-7872-04


– Off when no data is being transmitted.

• Speed (SPEED), green:

– On when 100-Mbps communication speed has been attained.

– Off when 10-Mbps communication speed has been attained, or no link has been established.

• Link enabled (LINK), green:

– On when Ethernet link has been established.

– Off when no link has been established.

2-port T1/E1-RAN Interface Card LEDs

• Alarm (AL), amber:

– On when a local or remote state exists.

– Off when the Cisco 2-port T1/E1-RAN interface card is operating normally.

• Loopback (LP), amber:

– On when a loopback or line state has been detected or has been manually set by the user.

– Off when the Cisco 2-port T1/E1-RAN interface card is operating normally.

• Data Carrier Detect (CD), green:

– On when a carrier has been detected and the internal CSU/DSU in the 2-port T1/E1-RAN interface card is communicating with another CSU/DSU.

– Off when no carrier has been detected.

For more detailed information about the LEDs, see Appendix A, “Troubleshooting,”

Power-Up ProcedureTo power up the Cisco MWR 1941-DC-A router and verify its initialization and self-test, follow this procedure. When the procedure is finished, the Cisco MWR 1941-DC-A router is ready to configure.

Step 1 Remove the tape from the circuit breaker switch handle.

Step 2 Reinstate power by moving the handle of the circuit breaker to the ON position.

The LED (labeled PWR) on the front panel should go on and the fans operate.

Depending on your installation, Fast Ethernet (0/0, 0/1 LEDs), NM-2W (Active and Ready LEDs), and the Cisco 2-port T1/E1-RAN interface card (CD LED) should also come on.

Note If you encounter problems when you power up the router, see Appendix A, “Troubleshooting,”

Formatting Procedures for CF Memory CardsFor the Cisco MWR 1941-DC-A router, we recommend that you format/erase the CF memory card to initialize them with a Class C Flash file system. This ensures proper formatting and enables the ROM monitor to recognize and boot the Flash.


OL-7872-04


The Class C Flash file system is similar to the standard DOS file system; however, a CF memory card formatted with the standard DOS file system does not support booting from the ROM monitor.

Formatting CF Memory Card as a DOS File System

To format an built-in CF memory card, or to remove the files from a CF memory card, enter the format slot0: command.

The following example shows output for formatting a CF memory card formatted with a Class C Flash file system:

Router# format slot0:

Format operation may take a while. Continue? [confirm]Format operation will destroy all data in "slot0:". Continue? [confirm]Enter volume ID (up to 64 chars)[default slot0]:Current Low End File System flash card in flash will be formatted into DOSFile System flash card! Continue? [confirm]Format:Drive communication & 1st Sector Write OK...Writing Monlib sectors ...................................................................Monlib write complete..Format:All system sectors written. OK... Format:Total sectors in formatted partition:250592Format:Total bytes in formatted partition:128303104Format:Operation completed successfully. Format of flash complete

File and Directory ProceduresThe following sections describe file and directory procedures for CF memory cards formatted with a Class C Flash file system.

Copy Files

To copy the files to another location, use the copy slot0: source-filename {slot0: | tfp: | lex: | null: | nvram: | pram: | rcp: | system: | tftp: | xmodem: | ymodem: | running-config | startup-config} destination-filename command.

The following example shows output for copying a Cisco IOS file from an external CF memory card to a TFTP server:

Router# copy slot0:mwr1900-i-mz.tmp tftp:

Destination filename [mwr1941-i-mz.tmp]?CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC


OL-7872-04


CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC6458584 bytes copied in 202.940 secs (31973 bytes/sec)

Display the Contents of a CF Card

To display the contents (directories and files) of a CF memory card formatted with a Class C Flash file system, use the dir slot0: command.

The following example shows output for displaying the contents of a CF memory card with a Class C Flash file system:

Router# dir slot0:

Directory of slot0:/ 3 -rw- 6455048 Mar 01 2001 00:04:06 mwr1900-i-mz1579 -rw- 6458584 Mar 01 2001 00:24:38 mwr1900-i-mz.new 15912960 bytes total (2998272 bytes free)

Display Geometry and Format Information

To display the geometry and format information of a CF memory card formatted with a Class C Flash file system, use the show slot0: command.

The following example shows output for displaying the geometry and format information of a CF memory card formatted with a Class C Flash file system:

Router# show slot0:

******** ATA Flash Card Geometry/Format Info ******** ATA CARD GEOMETRY Number of Heads: 2 Number of Cylinders 490 Sectors per Cylinder 32 Sector Size 512Total Sectors 31360 ATA CARD FORMAT Number of FAT Sectors 12 Sectors Per Cluster 8 Number of Clusters 3885 Number of Data Sectors 31264 Base Root Sector 152 Base FAT Sector 128 Base Data Sector 184 Please use "dir" command to display the contents of the card.


OL-7872-04


Delete Files from a Flash Memory Card

To delete a file from a CF memory card, use the delete slot0: filename command.

The following example shows output for deleting a Cisco IOS file from a CF card:

Router# delete slot0:mwr1900-i-mz.tmp

Delete filename [mwr1941-i-mz.tmp]?Delete slot0:mwr1941-i-mz.tmp? [confirm]Router# dir slot0:Directory of slot0:/ No files in directory 128094208 bytes total (128094208 bytes free)

Rename a File in a Flash Memory Card

To rename a file in a CF memory card, use the rename slot0: original-filename slot0: new-filename command.

The following example shows output for renaming a Cisco IOS file in a CF card:

Router# rename slot0:mwr1900-i-mz.tmp slot0:mwr1900-i-mz

Destination filename [mwr1900-i-mz]?Router# dir slot0:

Directory of slot0:/ 1580 -rw- 6462268 Mar 06 1993 06:14:02 mwr1900-i-mz.1941ata 3 -rw- 6458388 Mar 01 1993 00:01:24 mwr1900-i-mz 63930368 bytes total (51007488 bytes free)

Display File Content

To display the content of a file in a CF memory card, use the more slot0: filename command.

The following example shows output from the more slot0 command on a CF card:

Router# more slot0:mwr1900-i-mz.tmp

00000000: 7F454C46 01020100 00000000 00000000 .ELF .... .... ....00000010: 00020061 00000001 80008000 00000034 ...a .... .... ...400000020: 00000054 20000001 00340020 00010028 ...T ... .4. ...(00000030: 00050008 00000001 0000011C 80008000 .... .... .... ....00000040: 80008000 00628A44 00650EEC 00000007 .... .b.D .e.l ....00000050: 0000011C 0000001B 00000001 00000006 .... .... .... ....00000060: 80008000 0000011C 00004000 00000000 .... .... ..@. ....00000070: 00000000 00000008 00000000 00000021 .... .... .... ...!00000080: 00000001 00000002 8000C000 0000411C .... .... ..@. ..A.00000090: 00000700 00000000 00000000 00000004 .... .... .... ....000000A0: 00000000 00000029 00000001 00000003 .... ...) .... ....000000B0: 8000C700 0000481C 00000380 00000000 ..G. ..H. .... ....000000C0: 00000000 00000004 00000000 0000002F .... .... .... .../000000D0: 00000001 10000003 8000CA80 00004B9C .... .... ..J. ..K.000000E0: 00000020 00000000 00000000 00000008 ... .... .... ....000000F0: 00000000 0000002F 00000001 10000003 .... .../ .... ....00000100: 8000CAA0 00004BBC 00623FA4 00000000 ..J ..K< .b?$ ....00000110: 00000000 00000008 00000000 3C1C8001 .... .... .... <...


OL-7872-04


00000120: 679C4A80 3C018001 AC3DC70C 3C018001 g.J. <... ,=G. <...00000130: AC3FC710 3C018001 AC24C714 3C018001 ,?G. <... ,$G. <...00000140: AC25C718 3C018001 AC26C71C 3C018001 ,%G. <... ,&G. <...00000150: AC27C720 3C018001 AC30C724 3C018001 ,'G <... ,0G$ <...00000160: AC31C728 3C018001 AC32C72C 3C018001 ,1G( <... ,2G, <...--More-- q

Create a New Directory

To create a directory in CF memory, use the mkdir slot0: directory-name command.

The following example shows output for displaying the contents of a CF card, and then creating a config directory, followed by a test-config subdirectory:

Router# dir slot0:

Directory of slot0:/ 3 -rw- 6458208 Mar 01 1993 00:04:08 mwr1941-i-mz.tmp 128094208 bytes total (121634816 bytes free)Router# mkdir slot0:/config

Create directory filename [config]?Created dir slot0:/configRouter# mkdir slot0:/config/test-config

Create directory filename [/config/test-config]?Created dir slot0:/config/test-configRouter# dir slot0:

Directory of slot0:/ 3 -rw- 6458208 Mar 01 1993 00:04:08 mwr1941-i-mz.tmp 1580 drw- 0 Mar 01 1993 23:48:36 config 128094208 bytes total (121626624 bytes free)Router# cd slot0:/config

Router# dir slot0:

Directory of slot0:/config/ 1581 drw- 0 Mar 01 1993 23:50:08 test-config 128094208 bytes total (121626624 bytes free)

Remove a Directory

To remove a directory from CF memory, use the rmdir slot0:/directory-name command.

Before you can remove a directory, all files and subdirectories must be removed from the directory.

The following example shows output for displaying the contents of a CF card,and then removing the test-config directory:

Router# dir slot0:

Directory of slot0:/config/ 1581 drw- 0 Mar 01 1993 23:50:08 test-config


OL-7872-04


128094208 bytes total (121626624 bytes free)Router# rmdir slot0:/config/test-config

Remove directory filename [/config/test-config]?Delete slot0:/config/test-config? [confirm]Removed dir slot0:/config/test-configRouter# dir slot0:

Directory of slot0:/config/ No files in directory 128094208 bytes total (121630720 bytes free)

Enter a Directory and Determine the Current Directory

To enter a directory in CF memory, use the cd slot0:/directory-name command. To determine which directory you are in, use the pwd command.

The following example shows output for the following actions:

• Entering the home directory of a CF memory card in an external slot (slot0:/)

• Verifying that you are in the slot0:/ directory

Router# cd slot0:

Router# pwd

slot0:/

What to Do After Installing the HardwareAfter you have installed the router hardware, refer to the Cisco MWR 1941-DC-A Mobile Wireless Edge Software Configuration Guide for initial software configuration information.


OL-7872-04

Cisco MWR 1941-DC-A Mobile WireleOL-7872-04

A
P P E N D I X A Troubleshooting
Your Cisco MWR 1941-DC-A router undergoes extensive testing before it leaves the factory. If you encounter problems, use the information in this appendix to help isolate problems or to eliminate the router as the source of the problem.

This appendix contains the following sections:

• Problem Solving, this page

• Reading the LEDs, page A-4

If you cannot locate the source of the problem, contact a customer service representative for information on how to proceed. For technical support information, see the Cisco Information Packet publication that shipped with your router. Before you call, have the following information ready:

• Chassis type and serial number

• Maintenance agreement or warranty information

• Type of software and version number

• Date you received the new chassis

• Brief description of the problem

• Brief explanation of the steps you have taken to isolate the problem

Note Ensure you provide the customer service representative with any upgrade or maintenance information that was performed on the Cisco MWR 1941-DC-A router after your initial installation (see the “Creating a Site Log” section on page 2-9 and Appendix C, “Site Log” for Site Log information.

Problem SolvingThe key to problem solving is to isolate the problem to a specific subsystem by comparing what the router is doing to what it should be doing.

The LEDs on the front panel of the router enable you to determine router performance and operation. For a description of these LEDs (see “Reading the LEDs” section on page A-4).

When problem solving, check the following router subsystems:

• Power and cooling systems—External power source, power cable, router power supply and circuit breaker, and router fans. Also check for inadequate ventilation or air circulation.

• Modules—Checking the LEDs on the modules can help you to identify a failure.

A-1ss Edge Router Hardware Installation Guide

Appendix A Troubleshooting Problem Solving

• Cables—Ensure that the external cables connecting the router to the network are all secure.

Troubleshooting the Power and Cooling SystemsBoth the power LED and the fans can help you troubleshoot a power problem. Check the following items to help isolate the problem:

• When the Cisco MWR 1941-DC-A router is connected to the power source, is the power (labeled PWR) LED on the front panel on?

– If not, check the DC input, DC source, and the power supply wiring.

– Check the power supply connection to the motherboard.

– If the power LED is still off, the problem might be a power supply failure.

• Does the router shut down after being on for only a short time?

– Check for an environmentally induced shutdown (see the “Environmental Reporting Features”section on this page).

– Check the fans. If the fans are not working, the router will overheat and shut itself down.

– If the fans are not working, check the power supply connections to the fans.

– Ensure that the chassis intake and exhaust vents are clear.

– Check the environmental site requirements in the “System Specifications” section on page 1-13.

• Does the router partially boot, but the LEDs do not light?

– Check for a power supply failure by inspecting the power LED on the front panel of the router. If the LED is on, the power supply is functional.

– If the LED is off, refer to the Cisco Information Packet for warranty information or contact customer service.

Environmental Reporting FeaturesThe Cisco MWR 1941-DC-A router has a temperature sensor to detect overtemperature conditions inside the chassis. The overtemperature detection trips at 75°C +/- 5%. This condition is reported to the processor as an interrupt; software acts on this interrupt, generating the appropriate alarm. If the router reaches a temperature of 90°C, the power supply will cycle to prevent the router from exceeding that temperature in a powered-up state.

If the router is operating at an abnormally high temperature, the following message is displayed on the console screen:

%SYS-1-OVERTEMP: System detected OVERTEMPERATURE condition. Please resolve cooling problem immediately!

The following can cause an abnormally high router temperature:

• Fan failure

• Air conditioner failure in the room

• Air flow blocked to cooling vents

Take steps to correct the problem. For information about environmental operating conditions (see the “System Specifications” section on page 1-13).

A-2Cisco MWR 1941-DC-A Mobile Wireless Edge Router Hardware Installation Guide

OL-7872-04

Appendix A Troubleshooting Problem Solving

Troubleshooting Modules, Cables, and ConnectionsNetwork problems can be caused by a module, cables or cable connections, or external devices such as a modem, transceiver, hub, wall jack, WAN interface, or terminal. Check for the following symptoms to help isolate the problem:

• Module is not recognized by the router.

– Make sure that the module is firmly seated in its slot.

– Check the LEDs on the module. Each module has its own set of LEDs. For information on these LEDs (see the “Reading the LEDs” section on page A-4).

– Make sure you have a version of Cisco IOS software that supports the module.

• Module is recognized, but interface ports do not initialize.

– Make sure that the module is firmly seated in its slot.

– Check external cable connections.

– Make sure that you have a version of Cisco IOS software that supports the module.

• Router does not boot properly, or it constantly or intermittently reboots.

– Make sure the module is firmly seated in its slot.

– Check the router chassis or software. For warranty information, refer to the Cisco Information Packet publication that shipped with your router or contact customer service.

• Router boots, but the console screen is frozen.

– Check the external console connection.

– Verify that the parameters for your terminal are set as follows:

(a) The terminal should have the same data rate as the router has (9600 bps is the default).

(b) 8 data bits.

(c) No parity generated or checked.

(d) 2 stop bits.

• Router powers on and boots only when a particular module is removed.

– Check the module. For warranty information, refer to the Cisco Information Packet publication that shipped with your order or contact customer service.

• Router powers on and boots only when a particular cable is disconnected.

– There may be a problem with the module or cable. For warranty information, refer to the Cisco Information Packet publication that shipped with your order or contact customer service.


OL-7872-04

Appendix A Troubleshooting Reading the LEDs

Reading the LEDsThe LEDs on the front panel of the router and corresponding modules are aids for determining router and module performance and operation. Figure A-1 shows the locations of the LEDs. Table A-1 on this page and Tables A-2 and A-3 on page 5 describe the LEDs.

Figure A-1 Front Panel of the Cisco MWR 1941-DC-A Router

Table A-1 Chassis LEDs


Power (labeled PWR)

Green On Operating voltages on the mainboard are within acceptable ranges.

Off The router is not connected to a power supply, or an error condition has been detected in the operating voltages.

Status (labeled STAT)

Green On The router software has booted up, and the system is operational.

Off The router has not yet booted, or an error condition has been detected in the boot process.


Green On Packets being transferred.

Off No activity is occurring.

6578

3



CONSOLEAUXILIARY

Network moduleslot

FastethernetLEDs:

Activity (G)Speed (G)Link (G)

VWIC LEDs:Alarm (A)


VWICposition 0

2 portsVWIC

position 2

2 FEports

VWICposition 1

2 ports

Compactflash slot

Consoleport

Auxiliaryport

VWIC LEDs:Alarm (A)


Power (G)

Air vent (both sides)

Status (G) Chassis LEDsActivity (G)


OL-7872-04


Note In a redundant configuration, when the relays of the Cisco 2-port T1/E1-RAN close, the Data Carrier Detect LED on the T1 ports will remain on and the ALARM LED will go off. When the router is inactive, the Alarm LED will be on (as a result of no framing) and the Data Carrier Detect LED will be off.

Table A-2 Fast Ethernet Connector LEDs

LED Color State Status


Green On Data is being transmitted on the link.

Off No data is being transmitted.

Speed (labeled SPEED)

Green On A 100-Mbps communication speed has been attained.

Off Only a 10-Mbps communication speed has been attained, or no link has been established.

Link (labeled LINK)

Green On Ethernet link has been established.

Off No link has been established.

Table A-3 VWIC LEDs


Alarm (labeled AL)

Amber On A local or remote alarm state exists.

Off The Cisco 2-port T1/E1-RAN is operating normally.

Loopback (labeled LP)

Amber On A loopback or line state has been detected or has been manually set by the user.

Off The Cisco 2-port T1/E1-RAN is operating normally.

Data Carrier Detect (labeled CD)

Green On A carrier has been detected, and the internal CSU/DSU in the WAN interface card is communicating with another CSU/DSU. This LED is on during normal operation.

Off No carrier has been detected.


OL-7872-04



OL-7872-04


A
P P E N D I X B Cable Specifications
If you prefer to build your own cables, this appendix provides cable specifications for the Cisco MWR 1941-DC-A router and the Cisco 2-port T1/E1-RAN interface card.

This appendix includes the following sections:

• Console and Auxiliary Port Signals and Pinouts, page B-2

• Fast Ethernet Connector Pinouts, page B-4

• T1/E1 Port Pinouts (RJ-48), page B-5

Note Pins not listed in the tables in this appendix are not connected.

B-1ss Edge Router Hardware Installation Guide

Appendix B Cable Specifications Console and Auxiliary Port Signals and Pinouts

Console and Auxiliary Port Signals and PinoutsYour router comes with a console and auxiliary cable kit, which contains the cable and adapters that you need to connect a console terminal (an ASCII terminal or PC running terminal emulation software) or a modem to your router. The console and auxiliary cable kit includes the following items:

• RJ-45-to-RJ-45 rollover cable

• RJ-45-to-DB-9 female DTE adapter (labeled TERMINAL)

• RJ-45-to-DB-25 female DTE adapter (labeled TERMINAL)

• RJ-45-to-DB-25 male DCE adapter (labeled MODEM)

For console connections, see the Console Port Signals and Pinouts; for modem connections, see the “Auxiliary Port Signals and Pinouts” section on page B-3.

Console Port Signals and PinoutsUse the thin, flat, RJ-45-to-RJ-45 rollover cable and the RJ-45-to-DB-9 female DTE adapter (labeled TERMINAL) to connect the console port to a PC running terminal emulation software. Figure B-1 shows how to connect the console port to a PC. Table B-1 lists the pinouts for the asynchronous serial console port, the RJ-45-to-RJ-45 rollover cable, and the RJ-45-to-DB-9 female DTE adapter (labeled TERMINAL).

Figure B-1 Connecting the Console Port to a PC

Table B-1 Console Port Signaling and Cabling Using a DB-9 Adapter

ConsolePort (DTE) RJ-45-to-RJ-45 Rollover Cable

RJ-45-to-DB-9Terminal Adapter (Connected to Rollover Cable)

ConsoleDevice

Signal RJ-45 Pin RJ-45 Pin DB-9 Pin Signal

RTS 11

1. Pin 1 is connected internally to pin 8.

8 8 CTS

DTR 2 7 6 DSR

TxD 3 6 2 RxD

GND 4 5 5 GND

GND 5 4 5 GND

RxD 6 3 3 TxD

DSR 7 2 4 DTR

CTS 81 1 7 RTS

PCH

7226

RJ-45-to-RJ-45rollover cable

RJ-45-to-DB-9 adapter (labeled TERMINAL)

Router

B-2Cisco MWR 1941-DC-A Mobile Wireless Edge Router Hardware Installation Guide

OL-7872-04

Appendix B Cable Specifications Console and Auxiliary Port Signals and Pinouts

Table B-2 lists the pinouts for the asynchronous serial console port, the RJ-45-to-RJ-45 rollover cable, and the RJ-45-to-DB-25 female DTE adapter (labeled TERMINAL).

Auxiliary Port Signals and PinoutsTable B-3 lists the pinouts for the asynchronous serial auxiliary port, the RJ-45-to-RJ-45 rollover cable, and the RJ-45-to-DB-25 male DCE adapter (labeled MODEM).

Table B-2 Console Port Signaling and Cabling Using a DB-25 Adapter

ConsolePort (DTE)1

1. You can use the same cabling to connect a console to the auxiliary port.

RJ-45-to-RJ-45 Rollover CableRJ-45-to-DB-25Terminal Adapter

ConsoleDevice


RTS 12


8 5 CTS

DTR 2 7 6 DSR

TxD 3 6 3 RxD

GND 4 5 7 GND

GND 5 4 7 GND

RxD 6 3 2 TxD

DSR 7 2 20 DTR

CTS 82 1 4 RTS

Table B-3 Auxiliary Port Signaling and Cabling Using a DB-25 Adapter

AuxiliaryPort (DTE) RJ-45-to-RJ-45 Rollover Cable

RJ-45-to-DB-25Modem Adapter Modem


RTS 11


8 4 RTS

DTR 2 7 20 DTR

TxD 3 6 3 TxD

GND 4 5 7 GND

GND 5 4 7 GND

RxD 6 3 2 RxD

DSR 7 2 8 DCD

CTS 81 1 5 CTS


OL-7872-04

Appendix B Cable Specifications Fast Ethernet Connector Pinouts

To identify a rollover cable compare the modular plugs at the two ends of the cable. When you hold the plugs side by side, with the tab at the back, the wire connected to the pin on the outside of the left plug should be the same color as the wire connected to the pin on the outside of the right plug (see Figure B-2.) If you purchased your cable from Cisco Systems, pin 1 is white on one connector, and pin 8 is white on the other (a rollover cable connects pins 1 and 8, 2 and 7, 3 and 6, and 4 and 5).

Figure B-2 Identifying a Rollover Cable

Fast Ethernet Connector PinoutsThis section illustrates the Fast Ethernet 100Base-TX (RJ-45) connector and lists its pinout and signal descriptions.

Figure B-3 shows the 100Base-TX RJ-45 connector, and Table B-4 on page B-5 lists its pinouts. The 1-port Fast Ethernet network module RJ-45 port actively terminates wire pair 4 and 5 and wire pair 7 and 8. Common-mode termination reduces electromagnetic interference (EMI) and susceptibility to common-mode sources.

Figure B-3 100Base-TX RJ-45 Connector

Pin 1 Pin 8

H38

24

Pin 1 and pin 8should be the

same color

H15

67

in 8

RJ-45 (both ends)


OL-7872-04

Appendix B Cable Specifications T1/E1 Port Pinouts (RJ-48)

T1/E1 Port Pinouts (RJ-48)Figure B-4 shows the RJ-48C connector wiring for the T1/E1 cable for the Cisco 2-port T1/E1-RAN interface card; Table B-5 shows the pinout configuration for the RJ-48C connectors on the Cisco 2-port T1/E1-RAN interface card for both the shielded and unshielded cables for either T1 or E1.

Figure B-4 RJ-48-to-RJ-48 T1/E1 Cable Wiring

Note Cisco recommends using a shielded cable for your RJ-48C connectors.

Table B-4 RJ-45 Connector Pinout

Pin Signal

1 TX+

2 TX–

3 RX+

6 RX–

Table B-5 RJ-48C Pinout for Shielded and Unshielded Cables

Shielded Unshielded

Pin Description Pin Description

1 Receive ring 1 Receive ring

2 Receive tip 2 Receive tip

3 Receive shield 3

4 Transmit ring 4 Transmit ring

5 Transmit tip 5 Transmit tip

6 Transmit shield 6

7 Not used 7

8 Not used 8

H11

419

1 8


OL-7872-04

Appendix B Cable Specifications T1/E1 Port Pinouts (RJ-48)


OL-7872-04


A
P P E N D I X C Site Log
The Site Log provides a record of all actions related to installing and maintaining the router. Keep it in an accessible place near the chassis so that anyone who performs tasks has access to it. Use the Installation Checklist (see the “Installation Checklist” section on page 2-8) to verify the steps in the installation and maintenance of your router. Site Log entries might include the following:

• Installation progress—Make a copy of the Cisco MWR 1941-DC-A router Installation Checklist, and insert it into the Site Log. Make entries as you complete each task.

• Upgrade, removal, and maintenance procedures—Use the Site Log as a record of ongoing router maintenance and expansion history. Each time a task is performed on the Cisco MWR 1941-DC-A router, update the Site Log to reflect the following:

– Installation of NM-2W network module

– Removal or replacement of NM-2W network module and other upgrades

– Installation of Cisco 2-port T1/E1-RAN interface cards

– Removal or replacement of Cisco 2-port T1/E1-RAN interface cards

– Configuration changes

– Maintenance schedules and requirements

– Maintenance procedures performed

– Intermittent problems

– Comments and notes

Table C-1 on page C-2 shows a sample site log. Make copies of the sample or design your own site log to meet the needs of your site and equipment.

C-1ss Edge Router Hardware Installation Guide

Appendix C Site Log

Table C-1 Site Log

Date Description of Action Performed or Symptom Observed Initials

C-2Cisco MWR 1941-DC-A Mobile Wireless Edge Router Hardware Installation Guide

OL-7872-04

Cisco MWR 1941-DC-A Mobile Wireless Edge OL-7872-04

I N D E X

A

adapter pinouts B-2, B-3

audience viii

auxiliary port

adapter pinouts B-3

connecting 3-10

connections 2-9, 2-10, 3-10

pinouts B-2, B-3

auxiliary port signaling cabling, DB-25 (table) B-3

B

back panel 1-10, 3-6, 3-7

before you begin

unpacking and checking

shipment 2-6

C

cable

assemblies B-2

checklist, installation 2-8

Cisco Information Packet publication 2-6

compact flash

description 1-12

formatting 3-15

connecting

auxiliary port 3-10

fast ethernet interface cables 3-11

network cables 3-10

power supply 3-5

console port

adapter B-3

connections 2-9, 2-10, 3-10

pinouts B-3

console port signaling cabling, DB-25 (table) B-3

console port signaling cabling, DB-9 (table) B-2

console port signals and pinouts B-2

conventions, documentation ix

D

documentation

conventions ix

organization viii

E

equipment

for installation 2-7

racks rack-mounting

equipment 2-5

exposed wires (warning) 3-8

F

fast ethernet

connecting interface cables 3-11

formatting compact flash 3-15

front panel 1-9

G

general site requirements 2-4

grounding (warning) 3-14

IN-1Router Hardware Installation Guide

Index

H

hardware

installing 3-1

troubleshooting procedures A-1

I

installation

checklist 2-8

hardware 3-1

mounting 3-2

tools required 2-7

interface

numbering 1-14

interface numbering 1-14

L

LEDs

front panel A-4

log

site 2-9, C-1

M

method of procedures

See MOP

MOP 2-4, 2-6

mounting

instructions 3-2

N

network cables, connecting 3-10

network modules 1-11

numbering

interface 1-14

IN-2Cisco MWR 1941-DC-A Mobile Wireless Edge Router Hardware Ins

P

power (warning) 2-2

powering on 3-14

power lines (warning) 2-3

power supplies (warning) 2-3

power supply

connecting 3-5

description 1-12

power supply (warning) 3-7, 3-14

problem solving

See troubleshooting

R

RAN, using the Cisco MWR 1941-DC-A 1-2

record keeping, site log 2-9

regulatory compliance 1-15

restricted access (warning) 2-2, 3-1

rollover cable, identifying 3-9, B-4

S

safety

information 1-15

overview x

secure cabling (warning) 3-8

SELV circuits (warning) 1-12, 2-2

shipment

unpacking and checking 2-6

site

configuration 2-5

environment 2-5

log 2-9, C-1

site log, record keeping 2-9

site requirements

MOPs 2-6

slot numbering 1-14

specifications

tallation GuideOL-7872-04

Index

system 1-13

specifications, system 1-13

system specifications 1-13

T

temperature sensor 1-13

tools required for installation 2-7

troubleshooting

cables A-3

connections A-3

cooling system A-2

front panel LEDs A-4

modules A-3

power system A-2

V

ventilation 2-5

VWIC

connecting 3-12

connecting cables 3-11

description 1-6

RJ-48C pinout 3-12, B-5

VWIC-2MFT-T1-DIR 1-11

VWIC-2T1/E1-RAN 1-11

VWIC-3MFT-E1-DIR 1-11

W

warning

short circuit 3-7

warnings

safety overview x

Cisco MWR 1941-DC-OL-7872-04
IN-3
A Mobile Wireless Edge Router Hardware Installation Guide

Index

IN-4Cisco MWR 1941-DC-A Mobile Wireless Edge Router Hardware Ins
tallation Guide
OL-7872-04

cisco 1941 description

Documents