Cisco MWR 1941-DC Mobile Wireless Edge
Router Hardware Installation Guide
Corporate Headquarters
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170 West Tasman Drive
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Tel: 408 526-4000
800 553-NETS (6387)
Fax: 408 526-4100
Customer Order Number: DOC-7815827=
Text Part Number: 78-15827-06B0
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.
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domain version of the UNIX operating system. All rights reserved. Copyright © 1981, Regents of the University of California.
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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 relationship
between Cisco and any other company. (0501R)
Cisco MWR 1941-DC Mobile Wireless Edge Router Hardware Installation Guide
Copyright © 2003-2005 Cisco Systems, Inc. All rights reserved.
CONTENTS
About This Guide
Objectives
Audience
vii
vii
vii
Organization
viii
Conventions
viii
Related Documentation
x
Obtaining Documentation xi
Cisco.com xi
Documentation DVD xi
Ordering Documentation xii
Documentation Feedback
xii
Cisco Product Security Overview xii
Reporting Security Problems in Cisco Products
Obtaining Technical Assistance xiii
Cisco Technical Support Website xiv
Submitting a Service Request xiv
Definitions of Service Request Severity
xiii
xv
Obtaining Additional Publications and Information
CHAPTER
1
Overview of the Cisco MWR 1941-DC Router
Primary Uses of the MWR 1941-DC Router
Hardware Features
Fixed Interfaces
1-1
1-1
1-4
1-5
Voice/WAN Interface Cards
Cisco Network Modules
Compact Flash
xv
1-5
1-7
1-7
Overview of MWR 1941-DC Power Supply
1-8
Environmental Monitoring Temperature Sensor
System Specifications
1-9
Cisco MWR 1941-DC Router Interface Numbering
Slot and Port Numbering 1-10
Regulatory Compliance
1-9
1-9
1-11
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CHAPTER
2
Preparing to Install the Router
2-1
Safety Recommendations 2-1
Safety with Electricity 2-2
Preventing Electrostatic Discharge Damage
General Site Requirements
2-3
2-3
Required Tools and Equipment for Installation and Maintenance
Inspecting the Router
Creating a Site Log
Installation Checklist
2-5
2-5
2-6
Console and Auxiliary Port Considerations
Console Port Connections 2-7
Auxiliary Port Connections 2-7
2-6
Preparing to Connect to a Network 2-8
Ethernet Connections 2-8
Serial Connections 2-9
Configuring Serial Connections 2-9
Serial DTE or DCE Devices 2-9
Signaling Standards Supported 2-10
Distance Limitations 2-10
Asynchronous/Synchronous Serial Module Baud Rates
CHAPTER
3
Installing the Router
2-4
2-11
3-1
Installing Network Modules and Interface Cards
Rack Mounting the Chassis 3-2
Attaching the Brackets 3-2
Installing the Router in the Rack
3-1
3-3
Connecting the Console Terminal and Modem
Identifying a Rollover Cable 3-3
Console Port 3-4
Auxiliary Port 3-5
3-3
Connecting the Network Cables 3-5
Connecting the Fixed FE Interface Cables 3-5
Connecting the VWIC Interface Cables 3-6
Y-Cable Specifications 3-7
Connecting the WIC-2A/S Interface Cables 3-8
Connecting the Network Module Interface Cables
3-9
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Connecting the MWR 1941-DC Router to a DC-Input Power Supply
Required Tools and Equipment 3-10
Grounding the Router 3-10
Wiring the DC-Input Power Source 3-12
Powering On the Router 3-13
Replacing or Upgrading the CF 3-13
Removing a CF Memory Card from an External Slot 3-14
Installing a CF Memory Card in an External Slot 3-14
Formatting Procedures for CF Memory Cards 3-15
Formatting CF Memory as a DOS File System 3-15
File and Directory Procedures 3-16
Copy Files 3-16
Display the Contents of a CF Card 3-16
Display Geometry and Format Information 3-17
Delete Files from Flash 3-17
Rename a File in Flash 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
What to Do After Installing the Hardware
APPENDIX
A
Troubleshooting
3-10
3-20
3-20
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
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APPENDIX
B
Cable Specifications
Warning Conventions
B-1
B-2
Console and Auxiliary Port Signals and Pinouts
Console Port Signals and Pinouts B-5
Auxiliary Port Signals and Pinouts B-6
Ethernet Cable Pinouts B-7
Ethernet AUI Cable Pinouts
10BaseT Connector Pinouts
B-7
Fast Ethernet Connector Pinouts
B-9
B-5
B-8
T1/E1 Trunk and DigitaSl Voice Port Pinouts (RJ-48)
B-10
Serial Connection Signals and Pinouts B-10
Types of Serial Cables B-11
Connecting the Card to the Network B-11
EIA/TIA-232 Interface B-11
EIA/TIA-232 Connections B-12
EIA/TIA-232 Serial Cable Assembly B-12
EIA/TIA-449 Interface B-14
EIA/TIA-449 Connections B-14
EIA/TIA-449 Serial Cable Assembly B-15
V.35 Interface B-17
V.35 Connections B-17
V.35 Serial Cable Assembly B-17
X.21 Interface B-20
X.21 Connections B-20
X.21 Serial Cable Assembly B-20
EIA-530 Interface B-22
EIA-530 Connections B-22
EIA-530 Serial Cable Assembly B-22
Smart Serial Connection Signals and Pinouts B-24
EIA/TIA-232 Smart Serial Cable Assembly B-25
EIA/TIA-449 Smart Serial Cable Assembly B-26
X.21 Smart Serial Cable Assembly B-28
V.35 Smart Serial Cable Assembly B-29
EIA-530 Smart Serial Cable Assembly B-31
INDEX
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About This Guide
This preface discusses the objectives, audience, organization, and conventions of this hardware
installation guide.
This preface contains the following sections:
•
Objectives, page vii
•
Audience, page vii
•
Organization, page viii
•
Conventions, page viii
•
Related Documentation, page x
•
Obtaining Documentation, page xi
•
Documentation Feedback, page xii
•
Cisco Product Security Overview, page xii
•
Obtaining Technical Assistance, page xiii
•
Obtaining Additional Publications and Information, page xv
Objectives
This guide explains how to install, maintain, and troubleshoot your router hardware.
Although this guide provides minimum software configuration information, it is not comprehensive. For
detailed software configuration information, see the Cisco IOS configuration guide and command
reference publications. (See “Obtaining Documentation” for more information.)
Warranty, service, and support information is in the Cisco Information Packet that shipped with the
router.
Audience
This guide is designed for the person installing, configuring, and maintaining the router, who should be
familiar with electronic circuitry and wiring practices and has experience as an electronic or
electromechanical technician. It identifies certain procedures that should be performed only by trained
and qualified personnel.
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About This Guide
Organization
Organization
The major sections of this hardware installation guide are:
Chapter
Title
Description
Chapter 1
Overview of the Cisco MWR Discusses the hardware features and specifications of
1941-DC Router
the routers.
Chapter 2
Preparing to Install the Router Describes safety recommendations, site requirements,
network connection considerations, required tools and
equipment, and includes the installation checklist.
Chapter 3
Installing the Router
Includes router installation information, and shows
how to connect to 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 for if you prefer to build
your own cables.
Conventions
This guide uses the following conventions to convey instructions and information:
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
Examples of information you must enter.
font
<
>
Nonprinting characters, for example passwords, appear in angle brackets.
[
]
Default responses to system prompts appear in square brackets.
Note
Timesaver
Means reader take note. Notes contain helpful suggestions or references to material not covered in the
manual.
Means the described action saves time. You can save time by performing the action described in the
paragraph.
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Conventions
Tip
Caution
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.
Means reader be careful. In this situation, you might do something that could result in equipment
damage or loss of data.
Safety warnings appear throughout this publication in procedures that, if performed incorrectly, may
harm you. A warning symbol precedes each warning statement.
Warning
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. To see translations of the warnings that appear in
this publication, refer to the Regulatory Compliance and Safety Information document that
accompanied this device.
Waarschuwing
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 standaard
maatregelen om ongelukken te voorkomen. Voor vertalingen van de waarschuwingen die in deze
publicatie verschijnen, kunt u het document Regulatory Compliance and Safety Information
(Informatie over naleving van veiligheids- en andere voorschriften) raadplegen dat bij dit toestel is
ingesloten.
Varoitus
Tämä varoitusmerkki merkitsee vaaraa. Olet tilanteessa, joka voi johtaa ruumiinvammaan. Ennen
kuin työskentelet minkään laitteiston parissa, ota selvää sähkökytkentöihin liittyvistä vaaroista ja
tavanomaisista onnettomuuksien ehkäisykeinoista. Tässä julkaisussa esiintyvien varoitusten
käännökset löydät laitteen mukana olevasta Regulatory Compliance and Safety Information
-kirjasesta (määräysten noudattaminen ja tietoa turvallisuudesta).
Attention
Ce symbole d'avertissement indique un danger. Vous vous trouvez dans une situation pouvant causer
des blessures ou des dommages corporels. Avant de travailler sur un équipement, soyez conscient
des dangers posés par les circuits électriques et familiarisez-vous avec les procédures
couramment utilisées pour éviter les accidents. Pour prendre connaissance des traductions
d’avertissements figurant dans cette publication, consultez le document Regulatory Compliance and
Safety Information (Conformité aux règlements et consignes de sécurité) qui accompagne cet
appareil.
Warnung
Dieses Warnsymbol bedeutet Gefahr. Sie befinden sich in einer Situation, die zu einer
Körperverletzung führen könnte. Bevor Sie mit der Arbeit an irgendeinem Gerät beginnen, seien Sie
sich der mit elektrischen Stromkreisen verbundenen Gefahren und der Standardpraktiken zur
Vermeidung von Unfällen bewußt. Übersetzungen der in dieser Veröffentlichung enthaltenen
Warnhinweise finden Sie im Dokument Regulatory Compliance and Safety Information
(Informationen zu behördlichen Vorschriften und Sicherheit), das zusammen mit diesem Gerät
geliefert wurde.
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About This Guide
Related Documentation
Avvertenza
Questo simbolo di avvertenza indica un pericolo. La situazione potrebbe causare infortuni alle
persone. Prima di lavorare su qualsiasi apparecchiatura, occorre conoscere i pericoli relativi ai
circuiti elettrici ed essere al corrente delle pratiche standard per la prevenzione di incidenti. La
traduzione delle avvertenze riportate in questa pubblicazione si trova nel documento Regulatory
Compliance and Safety Information (Conformità alle norme e informazioni sulla sicurezza) che
accompagna questo dispositivo.
Advarsel
Dette varselsymbolet betyr fare. Du befinner deg i en situasjon som kan føre til personskade. Før du
utfører arbeid på utstyr, må du vare oppmerksom på de faremomentene som elektriske kretser
innebærer, samt gjøre deg kjent med vanlig praksis når det gjelder å unngå ulykker. Hvis du vil se
oversettelser av deadvarslene som finnes i denne publikasjonen, kan du se i dokumentet Regulatory
Compliance and Safety Information (Overholdelse av forskrifter og sikkerhetsinformasjon) som ble
levert med denne enheten.
Aviso
Este símbolo de aviso indica perigo. Encontra-se numa situação que lhe poderá causar danos
físicos. Antes de começar a trabalhar com qualquer equipamento, familiarize-se com os perigos
relacionados com circuitos eléctricos, e com quaisquer práticas comuns que possam prevenir
possíveis acidentes. Para ver as traduções dos avisos que constam desta publicação, consulte o
documento Regulatory Compliance and Safety Information (Informação de Segurança e Disposições
Reguladoras) que acompanha este dispositivo.
¡Advertencia!
Este símbolo de aviso significa peligro. Existe riesgo para su integridad física. Antes de manipular
cualquier equipo, considerar los riesgos que entraña la corriente eléctrica y familiarizarse con los
procedimientos estándar de prevención de accidentes. Para ver una traducción de las advertencias
que aparecen en esta publicación, consultar el documento titulado Regulatory Compliance and
Safety Information (Información sobre seguridad y conformidad con las disposiciones
reglamentarias) que se acompaña con este dispositivo.
Varning
Denna varningssymbol signalerar fara. Du befinner dig i en situation som kan leda till personskada.
Innan du utför arbete på någon utrustning måste du varamedveten om farorna med elkretsar och
känna till vanligt förfarande för att förebygga skador. Se förklaringar av de varningar som
förkommer i denna publikation i dokumentet Regulatory Compliance and Safety Information
(Efterrättelse av föreskrifter och säkerhetsinformation), vilket medföljer denna anordning.
Related Documentation
For information beyond the scope of this document, or for additional information about the
Cisco MWR 1941-DC router, use the following resources:
•
Cisco MWR 1941-DC Regulatory Compliance and Safety Information
•
Cisco MWR 1941-DC Software Configuration Guide
•
Cisco MWR 1941-DC Rack Mounting Instructions
•
MGX-RPM-1FE-CP Back Card Installation and Configuration Note
•
VWIC-2MFT-T1-DIR, VWIC-2MFT-E1-DIR Installation Instructions
•
Quick Start Guide: Network Modules for Cisco 2600 Series, Cisco 3600 Series, Cisco 3700 Series,
and Cisco MWR 1941-DC Mobile Wireless Edge Routers
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About This Guide
Obtaining Documentation
•
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
Obtaining Documentation
Cisco documentation and additional literature are available on Cisco.com. Cisco also provides several
ways to obtain technical assistance and other technical resources. These sections explain how to obtain
technical information from Cisco Systems.
Cisco.com
You can access the most current Cisco documentation at this URL:
http://www.cisco.com/univercd/home/home.htm
You can access the Cisco website at this URL:
http://www.cisco.com
You can access international Cisco websites at this URL:
http://www.cisco.com/public/countries_languages.shtml
Documentation DVD
Cisco documentation and additional literature are available in a Documentation DVD package, which
may have shipped with your product. The Documentation DVD is updated regularly and may be more
current than printed documentation. The Documentation DVD package is available as a single unit.
Registered Cisco.com users (Cisco direct customers) can order a Cisco Documentation DVD (product
number DOC-DOCDVD=) from the Ordering tool or Cisco Marketplace.
Cisco Ordering tool:
http://www.cisco.com/en/US/partner/ordering/
Cisco Marketplace:
http://www.cisco.com/go/marketplace/
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About This Guide
Documentation Feedback
Ordering Documentation
You can find instructions for ordering documentation at this URL:
http://www.cisco.com/univercd/cc/td/doc/es_inpck/pdi.htm
You can order Cisco documentation in these ways:
•
Registered Cisco.com users (Cisco direct customers) can order Cisco product documentation from
the Ordering tool:
http://www.cisco.com/en/US/partner/ordering/
•
Nonregistered Cisco.com users can order documentation through a local account representative by
calling Cisco Systems Corporate Headquarters (California, USA) at 408 526-7208 or, elsewhere in
North America, by calling 1 800 553-NETS (6387).
Documentation Feedback
You can send comments about technical documentation to [email protected].
You can submit comments by using the response card (if present) behind the front cover of your
document or by writing to the following address:
Cisco Systems
Attn: Customer Document Ordering
170 West Tasman Drive
San Jose, CA 95134-9883
We appreciate your comments.
Cisco Product Security Overview
Cisco provides a free online Security Vulnerability Policy portal at this URL:
http://www.cisco.com/en/US/products/products_security_vulnerability_policy.html
From this site, you can perform these tasks:
•
Report security vulnerabilities in Cisco products.
•
Obtain assistance with security incidents that involve Cisco products.
•
Register to receive security information from Cisco.
A current list of security advisories and notices for Cisco products is available at this URL:
http://www.cisco.com/go/psirt
If you prefer to see advisories and notices as they are updated in real time, you can access a Product
Security Incident Response Team Really Simple Syndication (PSIRT RSS) feed from this URL:
http://www.cisco.com/en/US/products/products_psirt_rss_feed.html
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Obtaining Technical Assistance
Reporting Security Problems in Cisco Products
Cisco is committed to delivering secure products. We test our products internally before we release them,
and we strive to correct all vulnerabilities quickly. If you think that you might have identified a
vulnerability in a Cisco product, contact PSIRT:
Tip
•
Emergencies — [email protected]
•
Nonemergencies — [email protected]
We encourage you to use Pretty Good Privacy (PGP) or a compatible product to encrypt any sensitive
information that you send to Cisco. PSIRT can work from encrypted information that is compatible with
PGP versions 2.x through 8.x.
Never use a revoked or an expired encryption key. The correct public key to use in your correspondence
with PSIRT is the one that has the most recent creation date in this public key server list:
http://pgp.mit.edu:11371/pks/lookup?search=psirt%40cisco.com&op=index&exact=on
In an emergency, you can also reach PSIRT by telephone:
•
1 877 228-7302
•
1 408 525-6532
Obtaining Technical Assistance
For all customers, partners, resellers, and distributors who hold valid Cisco service contracts, Cisco
Technical Support provides 24-hour-a-day, award-winning technical assistance. The Cisco Technical
Support Website on Cisco.com features extensive online support resources. In addition, Cisco Technical
Assistance Center (TAC) engineers provide telephone support. If you do not hold a valid Cisco service
contract, contact your reseller.
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About This Guide
Obtaining Technical Assistance
Cisco Technical Support Website
The Cisco Technical Support Website provides online documents and tools for troubleshooting and
resolving technical issues with Cisco products and technologies. The website is available 24 hours a day,
365 days a year, at this URL:
http://www.cisco.com/techsupport
Access to all tools on the Cisco Technical Support Website requires a Cisco.com user ID and password.
If you have a valid service contract but do not have a user ID or password, you can register at this URL:
http://tools.cisco.com/RPF/register/register.do
Note
Use the Cisco Product Identification (CPI) tool to locate your product serial number before submitting
a web or phone request for service. You can access the CPI tool from the Cisco Technical Support
Website by clicking the Tools & Resources link under Documentation & Tools. Choose Cisco Product
Identification Tool from the Alphabetical Index drop-down list, or click the Cisco Product
Identification Tool link under Alerts & RMAs. The CPI tool offers three search options: by product ID
or model name; by tree view; or for certain products, by copying and pasting show command output.
Search results show an illustration of your product with the serial number label location highlighted.
Locate the serial number label on your product and record the information before placing a service call.
Submitting a Service Request
Using the online TAC Service Request Tool is the fastest way to open S3 and S4 service requests. (S3
and S4 service requests are those in which your network is minimally impaired or for which you require
product information.) After you describe your situation, the TAC Service Request Tool provides
recommended solutions. If your issue is not resolved using the recommended resources, your service
request is assigned to a Cisco TAC engineer. The TAC Service Request Tool is located at this URL:
http://www.cisco.com/techsupport/servicerequest
For S1 or S2 service requests or if you do not have Internet access, contact the Cisco TAC by telephone.
(S1 or S2 service requests are those in which your production network is down or severely degraded.)
Cisco TAC engineers are assigned immediately to S1 and S2 service requests to help keep your business
operations running smoothly.
To open a service request by telephone, use one of the following numbers:
Asia-Pacific: +61 2 8446 7411 (Australia: 1 800 805 227)
EMEA: +32 2 704 55 55
USA: 1 800 553-2447
For a complete list of Cisco TAC contacts, go to this URL:
http://www.cisco.com/techsupport/contacts
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Obtaining Additional Publications and Information
Definitions of Service Request Severity
To ensure that all service requests are reported in a standard format, Cisco has established severity
definitions.
Severity 1 (S1)—Your network is “down,” or there is a critical impact to your business operations. You
and Cisco will commit all necessary resources around the clock to resolve the situation.
Severity 2 (S2)—Operation of an existing network is severely degraded, or significant aspects of your
business operation are negatively affected by inadequate performance of Cisco products. You and Cisco
will commit full-time resources during normal business hours to resolve the situation.
Severity 3 (S3)—Operational performance of your network is impaired, but most business operations
remain functional. You and Cisco will commit resources during normal business hours to restore service
to satisfactory levels.
Severity 4 (S4)—You require information or assistance with Cisco product capabilities, installation, or
configuration. There is little or no effect on your business operations.
Obtaining Additional Publications and Information
Information about Cisco products, technologies, and network solutions is available from various online
and printed sources.
•
Cisco Marketplace provides a variety of Cisco books, reference guides, and logo merchandise. Visit
Cisco Marketplace, the company store, at this URL:
http://www.cisco.com/go/marketplace/
•
Cisco Press publishes a wide range of general networking, training and certification titles. Both new
and experienced users will benefit from these publications. For current Cisco Press titles and other
information, go to Cisco Press at this URL:
http://www.ciscopress.com
•
Packet magazine is the Cisco Systems technical user magazine for maximizing Internet and
networking investments. Each quarter, Packet delivers coverage of the latest industry trends,
technology breakthroughs, and Cisco products and solutions, as well as network deployment and
troubleshooting tips, configuration examples, customer case studies, certification and training
information, and links to scores of in-depth online resources. You can access Packet magazine at
this URL:
http://www.cisco.com/packet
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About This Guide
Obtaining Additional Publications and Information
•
iQ Magazine is the quarterly publication from Cisco Systems designed to help growing companies
learn how they can use technology to increase revenue, streamline their business, and expand
services. The publication identifies the challenges facing these companies and the technologies to
help solve them, using real-world case studies and business strategies to help readers make sound
technology investment decisions. You can access iQ Magazine at this URL:
http://www.cisco.com/go/iqmagazine
•
Internet Protocol Journal is a quarterly journal published by Cisco Systems for engineering
professionals involved in designing, developing, and operating public and private internets and
intranets. You can access the Internet Protocol Journal at this URL:
http://www.cisco.com/ipj
•
World-class networking training is available from Cisco. You can view current offerings at
this URL:
http://www.cisco.com/en/US/learning/index.html
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1
Overview of the Cisco MWR 1941-DC Router
The MWR 1941-DC Mobile Wireless Edge Router is a networking platform optimized for use in mobile
wireless networks; specifically designed to be used at the cell site edge as a part of an IP Radio Access
Network (IP-RAN) or Cell Site Data Communications Network (DCN).
The MWR 1941-DC router offers high performance at a low cost while meeting the critical requirements
for deployment in cell sites, including small size, high availability, and DC input power flexibility.
This chapter includes the following sections:
•
Primary Uses of the MWR 1941-DC Router, page 1-1
•
Hardware Features, page 1-4
•
Fixed Interfaces, page 1-5
•
Voice/WAN Interface Cards, page 1-5
•
Cisco Network Modules, page 1-7
•
Compact Flash, page 1-7
•
Overview of MWR 1941-DC Power Supply, page 1-8
•
Environmental Monitoring Temperature Sensor, page 1-9
•
System Specifications, page 1-9
•
Cisco MWR 1941-DC Router Interface Numbering, page 1-9
•
Regulatory Compliance, page 1-11
Primary Uses of the MWR 1941-DC Router
The MWR 1941-DC router is designed to be used at a cell site as part of an IP-RAN or Cell Site DCN
solution.
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Primary Uses of the MWR 1941-DC Router
IP-RAN Solution Implementation
In an IP RAN solution, the MWR 1941-DC extends IP connectivity to the cell site and Base Transceiver
Station (BTS). Through a FastEthernet interface to the BTS, provides bandwidth-efficient IP transport
of voice and data bearer traffic, as well as maintenance, control, and signalling traffic, over the leased
line backhaul network between the BTS and leased line termination and aggregation node via
compression (cRTP/cUDP) and packet multiplexing (PPPmux and MLPPP).
Figure 1-1 shows the placement of and connections for the MWR 1941-DC in an IP-RAN solution.
Figure 1-1
MWR 1941-DC in an IP-RAN Solution
Active
100BaseT
T1/E1 backhaul link to
IP RAN aggregation node
Standby
MWR 1900 IP BTS router pair
65827
pBTS
In the IP-RAN solution, the BTS site consists of a pair of MWR 1941-DC routers. The pair of
MWR 1941-DC routers provides for an active and standby router for redundancy. A failure of the active
MWR 1941-DC causes the standby router to take over as the active router for the BTS site.
Each pair of MWR 1941-DC routers at the BTS site is identical in hardware configuration. They connect
to each other through the BTS via the Fast Ethernet interfaces. The individual backhaul links to an
MWR 1941-DC router are cabled from a single T1/E1 termination block in the BTS, connecting to both
the active and standby routers utilizing a “Y” cable. The redundancy design to control the active/standby
transitions of the router pair leverages HSRP to control the relays on the VWIC-2MFT-T1-DIR (or
VWIC-2MFT-E1-DIR) in each router to ensure that the relays on the active router are closed and the
relays on the standby router are open to avoid double termination of the T1 (or E1).
Cell Site DCN Solution Implementation
With Cisco IOS Release 12.2(15)MC1a and later, the MWR 1941-DC can be used to extend the mobile
operators data communications network (DCN) to the cell site, providing the ability to remotely manage
radio and ancillary cell site equipment from the operations center.
A Cell Site DCN minimizes the need to dispatch technicians for every problem that might occur by
providing the ability to remotely perform the following types of tasks:
•
troubleshooting
•
diagnosis
•
repairs
•
control
•
upgrades
•
routine maintenance of the cell site devices
A Cell Site DCN also provides IP connectivity to the cell site, enabling IP-related applications that
facilitate operation support (for example, web camera for site surveillance, IP telephone for voice
connectivity, and the LAN extension to the cell site to provide access to network applications and data,
and access to the Internet and/or intranet).
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Primary Uses of the MWR 1941-DC Router
The Cisco MWR 1941-DC provides connectivity options at the cell site through support of Cisco
network modules and WAN interface cards.
Figure 1-2 shows an example of the placement of and connections for the MWR 1941-DC in a Cell Site
DCN solution.
Figure 1-2
MWR 1941-DC in an Cell Site DCN Solution
BTS Node B
T1/E1
BSC/RNC
MWR 1941-DC, 7200, 1/0 DACS
Voice circuits
10/100 Base-T
T1/E1
Cisco MWR
1941-DC
Network Operations
Center
Drop
and
Insert
RS-232
DCN traffic
T1/E1
RF monitoring Unit
Microwave Equipment
Tower Light Controller
Battery System
Email access for trouble tickets
OSS network access
Database access for inventory and technical knowledge
Cisco IP SoftPhone or FXO/FXS VoIP for tech and support services
Web camera for Security
Local data archival
101070
10/100 Base-T
In the Cell Site DCN solution, the MWR 1941-DC provides a channelized T1/E1 interface to the BTS
and routes management and control traffic via one DS0 from a T1. In addition the MWR 1941-DC router
supports Asynchronous and Ethernet interfaces to monitored and controlled devices at the cell site.
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Hardware Features
Hardware Features
Figure 1-3 shows the front of the router. Figure 1-4 shows the back of the router.
The configuration in this graphic is as follows:
Figure 1-3
•
A VWIC is installed in two of the three WIC slots
•
A 4-port asynchronous/synchronous serial network module is installed in the network module slot
(Cell Site DCN implementation).
Front Panel of the Cisco MWR 1941-DC Router
Serial 0/3
Serial 0/1
Serial 0/2
Serial 0/0
SERIAL
A/S
CN/LP
RXC
RXD
TXC
TXD
2
CN/LP
RXC
RXD
TXC
TXD
1
CN/LP
RXC
RXD
TXC
TXD
0
CN/LP
RXC
RXD
TXC
TXD
EN
SEE MAN
UAL BEFO
RE INST
ALLATION
Serial 1/3
Serial 1/1
Serial 1/2
Serial 1/0
DSU
56K
SEE MAN
UAL BEFO
RE INST
ALLATION
FE1
FE0
Figure 1-4
CONSOL
E
AUXILIA
DSU
56K
98716
3
RY
Console
port
Auxiliary
port
Back Panel of the Cisco MWR 1941-DC Router
Rack mount bracket
(both sides)
Grounding
nut/screw
65784
Power
connector
Fan
The Cisco MWR 1941-DC router includes the following features:
•
Two DIMM-168 SDRAM (4 banks) sockets
•
SysAD bus speed and SDRAM local bus speed is 80Mhz
•
External Compact Flash (CF)
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Fixed Interfaces
•
Two fixed LAN 10/100 Base-T Ethernet Ports
•
Three WIC/VIC expansion slots (third slot supported in Cell Site implementation only)
•
One network module slot (Cell Site DCN implementation only)
•
Redundancy support via a two T1/E1 WIC capable of port switching ON/OFF via relays (IP-RAN
implementation only)
•
Console RS-232 port
•
Auxiliary Serial Port with hardware flow control
•
Front (connector side) to rear airflow using four 40mm, 10 CFM exhaust fans
•
+ 27/-48 VDC (+/- 20 to 60 VDC supply tolerance) universal power supply
•
Three green chassis LEDs for Power (PS is operational), System Ready (software is up and running),
and Activity (interrupts/packet transfers running)
Fixed Interfaces
The MWR 1941-DC router has two fixed LAN ports offering 10/100 Base-T Ethernet attachment. The
ports are fully compliant with the IEEE 802.3 and 802.3U standards and integrate the media access
control (MAC) functions and a dual-speed MII interface. Both ports can operate in half- or full-duplex
mode and can run independently of one another. For each FE interface, there are two green LEDs, one
for Link Integrity and one for Link Activity.
Voice/WAN Interface Cards
The Cisco MWR 1941-DC router supports the following Voice/WAN interface cards (VWICs):
Note
•
2-port T1/Fractional T1 Drop and Insert Multiflex Trunk Interface Card: VWIC-2MFT-T1-DIR(=)
•
2-port E1/Fractional E1 Drop and Insert Multiflex Trunk Interface Card: VWIC-2MFT-E1-DIR(=)
•
2-port Asynchronous/Synchronous WAN Interface Card: WIC-2A/S(=)
The WIC-2A/S is supported by the Cell Site DCN implementation only with Cisco IOS
Release 12.2(15)MC1a and later.
IVWIC-2MFT-T1/E1-DIR
The Cisco VWIC-2MFT-T1-DIR and VWIC-2MFT-E1-DIR VWICs support data applications on the
Cisco MWR 1941-DC Mobile Wireless Edge Router for T1/E1 networks. These cards are dual-port,
T1/Fractional T1 or E1/Fractional E1, Drop and Insert Multiplexers with integrated T1 CSU/DSUs or
E1 DSUs. The T1 version supports framed and unframed traffic, and the E1 version supports framed
traffic and unframed traffic that conforms to the ITU-T G.703 standard for full 2.048 Mbps bandwidth.
The Drop and Insert multiplexer diverts (drops) streams of an aggregate Time Division Multiplexed
(TDM) traffic stream, and introduces (inserts) different streams for transmission in the time slots that
were previously occupied by the dropped streams. Each VWIC supports a limited channelized capability
where the T1 or E1 can be flexibly split into two fractional channel groups, one on each port or two on
one port. The switching operation can be maintained through router restarts and reloads of Cisco IOS
software.
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Voice/WAN Interface Cards
Each card also features protection switch solid state relays on the line interfaces, which together with
redundancy logic and relay control added to the base Cisco IOS feature set on the MWR 1941-DC,
provides T1/E1 Protection Switching between redundant routers.
The MWR 1941-DC router provides three WAN interface slots.
Additional information is contained in separate publications.
•
For information on the VWIC-2MFT-T1/E1-DIR VWICs, see the publication VWIC-2MFT-T1DIR,
VWIC-2MFT-E1DIR Installation Instructions.
•
For software configuration information, see the publication Cisco MWR 1941-DC Software
Configuration Guide.
These manuals are on Cisco.com. See “Obtaining Documentation” section on page xi for more
information.
WIC-2A/S
The dual-serial port WAN Interface Card (WIC-2A/S) provides higher levels of serial port density for a
single WIC on the MWR 1941-DC router in a Cell Site DCN implementation. The low serial speed
WIC-2A/S supports up to 128 Kbps synchronous or 115.2 Kbps asynchronous serial links. Each port on
a WIC is a different physical interface and can support different protocols such as Point-to-Point
Protocol (PPP) or Frame Relay and Data Terminal Equipment/Data Communications Equipment
(DTE/DCE). This WIC supports mixed asynchronous and synchronous operation on a single card as
well.
These dual-serial port WICs feature Cisco's new, compact, Smart Serial connectors to support a wide
variety of electrical interfaces when used with the appropriate transition cable. This includes: V.35,
RS-232, RS-449, RS-530, RS-530A in male and female versions for both DTE and DCE devices. This
feature provides easy configuration and reconfiguration as network requirements change, without the
need of purchasing a different serial interface card.
The WIC-2A/S provides two serial ports using the Smart Serial connector.
•
Asynchronous support with a maximum speed of 115.2 Kbps, and a minimum of 600 bps. If you
need to run at speeds lower than 600 bps, use the AUX port instead.
•
Synchronous support with a maximum speed of 128 Kbps.
Additional information is contained in separate publications.
•
For instructions on installing the WIC-2A/S and detailed information about the WIC-2A/S, see the
Cisco Interface Cards Installation Guide.
•
For software configuration information, see the publication Cisco MWR 1941-DC Software
Configuration Guide.
These manuals are on Cisco.com. See “Obtaining Documentation” section on page xi for more
information.
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Cisco Network Modules
Cisco Network Modules
For implementation in a Cell Site DCN, with Cisco IOS Release 12.2(15)MC1a, the Cisco MWR
1941-DC router also supports the following Cisco network modules:
•
Alarm Interface Card—NM-AIC-64(=)
•
16-port Ethernet Switch—NM-16ESW(=)
Note
•
When using the NM-16ESW with the MWR 1941-DC router, shielded cables are required
and IP phone inline power is not supported.
Asynchronous
– 16-port Asynchronous Serial—NM-16A(=)
– 4-port Asynchronous/Synchronous Serial: NM-4A/S(=)
– 8-port Asynchronous/Synchronous Serial: NM-8A/S(=)
•
1-port T3/E3: NM-1T3/E3(=)
Note
When used with the MWR 1941-DC router, the NM-1T3/E3 supports line rate throughput
for traffic with packet sizes of 1500 bytes. For traffic with smaller packet sizes, degradation
in throughput will be seen.
Additional information is contained in separate publications.
•
For instructions on installing these network modules and details on each of these network modules
and their interfaces, see the Cisco Network Modules Hardware Installation Guide.
•
For software configuration information, see the publication Cisco MWR 1941-DC Software
Configuration Guide.
These manuals are on Cisco.com. See “Obtaining Documentation” section on page xi for more
information.
Compact Flash
One external Compact Flash (CF) device is used on the MWR 1941-DC router. The MWR 1941-DC
Compact Flash memory cards is available in 32 MB and 64 MB of memory. This device is configured in
memory mapped mode (PCMCIA) to allow for hot insertion. This device is required for the
MWR 1941-DC router to function because the IOS image and troubleshooting logs reside on this device.
For information about replacing or upgrading the CF, see the “Replacing or Upgrading the CF” section
on page 3-13.
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Overview of MWR 1941-DC Power Supply
Overview of MWR 1941-DC Power Supply
The MWR 1941-DC router is equipped with a +27/-48 VDC universal power supply.
Table 1-1 lists DC power supply specifications of the Cisco MWR 1941-DC router.
Table 1-1
Cisco MWR 1941-DC Power Supply Specifications
Specification
+27/-48 VDC
Input voltage, DC power supply
+27/-48 VDC (±20 to 60 VDC
supply tolerance) universal power
supply
Maximum input current
3.5A
Note
If the input voltage drops
below 18.5 VCD, the router
will go into shut down
mode.
Wire gauge for DC-input power
connections
18 AWG
Power Dissipation
70 W (maximum) 35 W (typical)
The Cisco MWR 1941-DC router uses a small, three-wire connector for input to the power supply. The
connector ships in the accessory kit and is Phoenix Contact part number 1756272.
With the connector installed in the chassis, the pins from top to bottom are 1, 2 and 3. Table 1-2 and
Table 1-3 list the pinout configurations for the connector based on power source.
Table 1-2
Power Supply Connectors Pinout—+27 VDC Application
PIN
+27 VDC Power Source
1
+27 VDC
2
Ground
3
RTN
Table 1-3
Power Supply Connectors Pinout—-48 VDC Application
PIN
-48 VDC Power Source
1
RTN
2
Ground
3
-48 VDC
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Environmental Monitoring Temperature Sensor
Environmental Monitoring Temperature Sensor
The MWR 1941-DC router has a temperature sensor to detect over-temperature conditions inside the
chassis. The over-temperature detection trips at 75°C +/- 5%. This condition is reported to the processor
as an interrupt and software then takes action on this interrupt to generate the appropriate alarming. If
the router reaches a temperature of 90°C, the power supply will cycle to prevent the box from exceeding
that temperature in a powered up state.
System Specifications
Table 1-4 lists the Cisco MWR 1941-DC router system specifications.
Table 1-4
Cisco MWR 1941-DC 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) 1RU/19.00 Rack
Mount
Weight
10.5 lb (4.77 kg)
Console and Auxiliary ports
RJ-45 connector
Operating Temperature
32 to 122°F (0 to + 50°C)1
Non-Operational Temperature
-40 to 185°F (-40 to 85°C)
Operating Humidity
5 to 90% RH (non-condensing)
Operating Altitude
+3000m @ 113°F (45°C)
Operating Vibration
0.41 Grms, 3 to 500 Hz/2 hours per axis
GR-63-CORE earthquake resistance, Zone 4, shelf-level
Non-Operational Vibration
1.12 Grms, 3 to 500 Hz/30 minutes per axis
Operating Acoustics
< 60 dBa
1. When two or less VWIC-2MFT-T1/E1-DIRs are installed in the Cisco MWR 1941-DC router, an operating temperature
range of 14 to 131°F (-10 to +55°C) is supported.
Cisco MWR 1941-DC Router Interface Numbering
Each network interface on a Cisco MWR 1941-DC router is identified by a slot number and a port
number.
Figure 1-5 shows an example of interface numbering on a Cisco MWR 1941-DC router with the
following configuration for a Cell Site DCN implementation:
•
A VWIC in two of the three VWIC slots
•
A 4-port asynchronous/synchronous serial network module in slot 1
•
Two built-in Fast Ethernet interfaces
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Cisco MWR 1941-DC Router Interface Numbering
Figure 1-5
Cisco MWR 1941-DC Router Port Numbers
Serial 0/3
Serial 0/1
Serial 0/2
Serial 0/0
SERIAL
A/S
CN/LP
RXC
RXD
TXC
TXD
2
CN/LP
RXC
RXD
TXC
TXD
1
CN/LP
RXC
RXD
TXC
TXD
0
CN/LP
RXC
RXD
TXC
TXD
EN
SEE MAN
UAL BEFO
RE INST
ALLATION
Serial 1/3
Serial 1/1
Serial 1/2
Serial 1/0
DSU
56K
SEE MAN
UAL BEFO
RE INST
ALLATION
FE1
FE0
CONSOL
E
AUXILIA
DSU
56K
98716
3
RY
Console
port
Auxiliary
port
Slot and Port Numbering
Note
The IP-RAN implementation does not support the third VWIC or network module slot.
The Cisco MWR 1941-DC router chassis contains the following LAN and WAN interface types:
•
Two built-in Fast Ethernet LAN interfaces
•
Three slots in which you can install Voice/WAN interface cards (VWICs)
•
One slot in which you can install a network module
The slot numbers are as follows:
•
0 for all built-in interfaces
•
0 for all built-in VWIC slots
•
1 for the network module slot
The numbering format is:
Interface type Slot number/Interface number
Interface (port) numbers begin at 0 for each interface type, and continue from right to left.
•
The two built-in Ethernet 10/100 interfaces are Fast Ethernet 0/0 and Fast Ethernet 0/1.
•
The slot number for all VWIC interfaces in the built-in VWIC slot is always 0. (The W0, W1, and
W2 slot designations are for physical slot identification only.) Interfaces in the VWICs are
numbered from right to left, starting with 0/0 for each interface type, regardless of the physical
VWIC slot in which the VWICs are installed.
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Regulatory Compliance
For example, if you have a VWIC in two of the VWIC slots (W0 and W1), then the 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 VWIC in physical slot W1 (leaving slot W0 empty), the interfaces in slot
W1 are Serial 0/0 and Serial 0/1. If you then add a VWIC to slot W0, the interface numbering will
shift. The configuration that you created for interfaces Serial 0/0 and Serial 0/1 will now be applied
to the VWIC in slot W0 and you will need to create a new configuration for the 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 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 Compliance
For regulatory compliance and safety information, see the Regulatory Compliance and Safety
Information for the Cisco MWR 1941-DC Mobile Wireless Edge Router document. This document
shipped with your router and is also available on Cisco.com. See “Obtaining Documentation” section on
page xi for more information.
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Regulatory Compliance
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2
Preparing to Install the Router
This chapter describes site requirements and equipment needed to install your Cisco MWR 1941-DC
router. It includes the following sections:
•
Safety Recommendations, page 2-1
•
General Site Requirements, page 2-3
•
Installation Checklist, page 2-6
•
Console and Auxiliary Port Considerations, page 2-6
•
Inspecting the Router, page 2-5
•
Required Tools and Equipment for Installation and Maintenance, page 2-4
•
Console and Auxiliary Port Considerations, page 2-6
•
Preparing to Connect to a Network, page 2-8
Safety Recommendations
Follow these guidelines to ensure general safety:
Warning
•
Keep the chassis area clear and dust-free during and after installation.
•
Keep tools away from walk areas where you or others could fall over them.
•
Do not wear loose clothing that may get caught in the chassis. Fasten your tie or scarf and roll up
your sleeves.
•
Wear safety glasses when working under conditions that may be hazardous to your eyes.
•
Do not perform any action that creates a potential hazard to people or makes the equipment unsafe.
Only trained and qualified personnel should be allowed to install or replace this equipment.
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Chapter 2
Preparing to Install the Router
Safety Recommendations
Safety with Electricity
Warning
Before performing any of the following procedures, ensure that power is removed from the DC circuit.
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.
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.
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.
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.
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 shut the power OFF.
•
Before working on the system, turn the DC main circuit breaker off and disconnect the power
cord/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
•
Do not work alone if potentially hazardous conditions exist.
•
Look carefully for possible hazards in your work area, such as moist floors, ungrounded power
extension cables, and missing safety grounds.
•
Never assume that power is disconnected from a circuit. Always check.
•
If an electrical accident occurs, proceed as follows:
– Use caution, and do not become a victim yourself.
– Turn OFF power to the system.
– If possible, send another person to get medical aid. Otherwise, determine the condition of the
victim and then call for help.
– Determine if the person needs rescue breathing or external cardiac compressions; then take
appropriate action.
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General Site Requirements
Preventing Electrostatic Discharge Damage
Electrostatic discharge (ESD) can damage equipment and impair electrical circuitry. It can occur if
electronic printed circuit cards are improperly handled and can cause complete or intermittent failures.
Always follow ESD prevention procedures when removing and replacing modules:
Caution
•
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.
For the safety of your equipment, periodically check the resistance value of the antistatic strap. It should
be between 1 and 10 megohms (Mohm).
General Site Requirements
You can mount the Cisco MWR 1941-DC router in a 19-inch rack (with a 17.5- or 17.75-inch opening).
The following information will help you plan your equipment rack configuration:
•
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 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 intake or
exhaust ports. If the chassis is installed on slides, check the position of the chassis when it is seated
into the rack.
•
Baffles can help to isolate exhaust air from intake air, which also helps to draw cooling air through
the chassis. The best placement of the baffles depends on the airflow patterns in the rack, which can
be found by experimenting with different configurations.
•
When equipment installed in a rack (particularly in an enclosed rack) fails, try operating the
equipment by itself, if possible. Power OFF other equipment in the rack (and in adjacent racks) to
allow the router under test a maximum of cooling air and clean power.
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Required Tools and Equipment for Installation and Maintenance
Required Tools and Equipment for Installation and Maintenance
You need the following tools and equipment to install and upgrade the router and its components:
•
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)
•
Screws to fit your rack
•
Cables for connection to the WAN and LAN ports (dependent on configuration)
•
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) 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 (PN 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.
In addition, depending on the type of modules you plan to use, you might need the following equipment
to connect a port to an external network:
•
Cables for connection to the WAN and LAN ports (dependent on configuration).
Note
For more information on cable specifications, refer to the Appendix B, “Cable
Specifications.”
•
Ethernet hub or PC with a network interface card for connection to Ethernet (LAN) ports.
•
Console terminal (an ASCII terminal or a PC running terminal emulation software) 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).
•
Serial interfaces may require a data service unit (DSU) or channel service unit/data service unit
(CSU/DSU).
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Inspecting the Router
Inspecting the Router
Do not unpack the router until you are ready to install it. If the final installation site will not be ready
for some time, keep the chassis in its shipping container to prevent accidental damage. When you are
ready to install the router, proceed with unpacking it.
The router, cables, publications, 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 terminal block connector (Phoenix part number 1756272) located in the accessory kit
that shipped with your router
•
Rack-mount brackets
•
This publication, the Regulatory Compliance and Safety Information document, optional companion
publications, or Documentation CD-ROM, as specified in your order
•
Cisco Information Packet publication
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. Warranty, service, and support
information is in the Cisco Information Packet that shipped with your router.
Creating a Site Log
The Site Log provides a record of all actions related to the router. Keep it in an accessible place near the
chassis where anyone who performs tasks has access to it. Use the Installation Checklist (a sample is
included in the following section) to verify steps in the installation and maintenance of the router. Site
Log entries might include the following:
•
Installation progress—Make a copy of the Installation Checklist and insert it into the Site Log. Make
entries as each procedure is completed.
•
Upgrade and maintenance procedures—Use the Site Log as a record of ongoing router maintenance
and expansion history. A Site Log might include the following events:
– Installation of network modules
– Removal or replacement of network modules and other upgrades
– Configuration changes
– Maintenance schedules and requirements
– Maintenance procedures performed
– Intermittent problems
– Comments and notes
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Installation Checklist
Installation Checklist
The sample Installation Checklist lists items and procedures for installing a new router. Make a copy of
this checklist and mark the entries when completed. Include a copy of the checklist for each router in
your Site Log (described in the next section, “Console and Auxiliary Port Considerations”).
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
This publication and the Regulatory Compliance
and Safety Information document received
Optional printed documentation or CD-ROM
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
Console and Auxiliary Port Considerations
The router includes an asynchronous serial console port and an auxiliary port. The console and auxiliary
ports provide access to the router either locally using a console terminal, or remotely using a modem
connected to the auxiliary port. This section discusses important cabling information to consider before
connecting a console terminal, which can be either an ASCII terminal or a PC running terminal
emulation software, to the console port or modem to the auxiliary port.
The main difference between the console and auxiliary ports 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 absorb the data
sent to it before the sending device sends more. When the buffers on the receiving device are full, a
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Console and Auxiliary Port Considerations
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 ideally suited for use with the
high-speed transmissions of a modem. Console terminals transmit at slower speeds than modems;
therefore, the console port is ideally suited for use with console terminals.
Note
Console and rollover cables are not included with the MWR 1941-DC router. You can order the console
cable from Cisco Systems (PN ACS-1900ASYN=). You must supply your own rollover cable.
Console Port Connections
The 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 detailed information about
installing a console terminal, see the “Connecting the Console Terminal and Modem” section on
page 3-3.
For cable and port pinouts, see the online document Cisco Modular Access Router Cable Specifications.
This document is located on the Documentation CD-ROM that accompanied your router, and on
Cisco.com.
Auxiliary Port Connections
The 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 a DTE or DCE device at
the end of the cable.
To connect a modem to the auxiliary port, use the RJ-45 rollover cable with the male RJ-45-to-DB-25
adapter (labeled MODEM). For detailed information about connecting devices to the auxiliary port, see
the “Connecting the Console Terminal and Modem” section on page 3-3.
For cable and port pinouts, see the online document Cisco Modular Access Router Cable Specifications.
This document is located on the Documentation CD-ROM that accompanied your router, and Cisco.com.
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Preparing to Connect to a Network
When setting up your router, consider distance limitations and potential electromagnetic interference
(EMI) as defined by the applicable local and international regulations.
Network connection considerations are provided for several types of network interfaces and are
described in the following sections:
•
Ethernet Connections, page 2-8
•
Serial Connections, page 2-9
Refer to the following online documents for more information about network connections and interfaces:
Warning
•
Cisco Network Modules Hardware Installation Guide
•
Cisco Interface Cards Installation Guide
•
Appendix B, “Cable Specifications.”
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. To see translations of the warnings that appear in this
publication, refer to the Regulatory Compliance and Safety Information document that accompanied
this device.
Ethernet Connections
The IEEE has established Ethernet as standard IEEE 802.3. The most common Ethernet implementations
are as follows:
•
100BASE-T—2-pair Category 5 or unshielded twisted-pair (UTP) straight-through RJ-45 cable.
•
10BASE-2—Ethernet on thin coaxial cable, also known as thin Ethernet. The maximum segment
distance is 607 feet (186 meters).
•
10BASE-5—Ethernet on thick coaxial cable, also known as thick Ethernet. The maximum segment
distance is 1,640 feet (500 meters).
•
10BASE-T—Ethernet on unshielded twisted-pair (UTP) cable. The maximum segment distance is
328 feet (100 meters). UTP cables look like the wiring used for ordinary telephones; however, UTP
cables meet certain electrical standards that telephone cables do not meet.
Refer to theAppendix B, “Cable Specifications” for information about Ethernet cables, connectors, and
pinouts.
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Serial Connections
Serial connections are provided by WAN interface cards and network modules. For more information on
WAN interface cards, refer to the Cisco Interface Cards Installation Guide. For more information on
network modules, refer to the Cisco Network Modules Hardware Installation Guide. These documents
are accessible online and on the Cisco Documentation CD-ROM.
Before you connect a device to a serial port, you need to know the following:
•
Type of device, data terminal equipment (DTE) or data communications equipment (DCE), you are
connecting to the synchronous serial interface
•
Type of connector, male or female, required to connect to the device
•
Signaling standard required by the device
Configuring Serial Connections
The serial ports on the asynchronous/synchronous serial network modules and the serial WAN interface
card use DB-60 connectors. Serial ports can be configured as DTE or DCE, depending on the serial cable
used.
Serial DTE or DCE Devices
A device that communicates over a synchronous serial interface is either a DTE or DCE device. A DCE
device provides a clock signal that paces the communications between the device and the router. A DTE
device does not provide a clock signal. DTE devices usually connect to DCE devices. The documentation
that accompanied the device should indicate whether it is a DTE or DCE device. (Some devices have a
jumper to select either DTE or DCE mode.) Table 2-1 lists typical DTW and DCE devices.
Table 2-1
Typical DTE and DCE Devices
Device Type
DTE
Gender
Male
Typical Devices
1
Terminal
PC
DCE
Female
2
Modem
CSU/DSU
Multiplexer
1. If pins protrude from the base of the connector, the connector is male.
2. If the connector has holes to accept pins, the connector is female.
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Signaling Standards Supported
The synchronous serial ports available for the router support the following signaling standards:
EIA/TIA-232, EIA/TIA-449, V.35, X.21, and EIA-530. You can order a Cisco DB-60 shielded serial
transition cable that has the appropriate connector for the standard you specify. The documentation for
the device you want to connect should indicate the standard used for that device. The router end of the
shielded serial transition cable has a DB-60 connector, which connects to the DB-60 port on a serial
WAN interface card. The other end of the serial transition cable is available with a connector appropriate
for the standard you specify.
The synchronous serial port can be configured as DTE or DCE, depending on the attached cable (except
EIA-530, which is DTE only). To order a shielded cable, contact customer service. See the “Obtaining
Technical Assistance” section on page xiii.
Note
All serial ports configured as DTE require external clocking from a CSU/DSU or other DCE device.
Although manufacturing your own serial cables is not recommended (because of the small size of the
pins on the DB-60 serial connector), cable pinouts are provided in Appendix B, “Cable Specifications.”
Distance Limitations
Serial signals can travel a limited distance at any given bit rate; generally, the slower the data rate, the
greater the distance. All serial signals are subject to distance limits, beyond which a signal significantly
degrades or is completely lost.
Note
Only the serial WAN interface card supports bit rates above 128 Kbps.
Table 2-2 lists the recommended maximum speeds and distances for each serial interface type; however,
you might get good results at speeds and distances greater than those listed, if you understand the
electrical problems that might arise and can compensate for them. For instance, the recommended
maximum rate for V.35 is 2 Mbps, but 4 Mbps is commonly used.
Table 2-2
Serial Signal Transmission Speeds and Distances
EIA/TIA-232
Distance
EIA/TIA-449, X.21, V.35,
EIA-530 Distance
Rate (bps)
Feet
Meters
Feet
Meters
2400
200
60
4100
1250
4800
100
30
2050
625
9600
50
15
1025
312
19200
25
7.6
513
156
38400
12
3.7
256
78
56000
8.6
2.6
102
31
1544000 (T1)
—
—
50
15
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Balanced drivers allow EIA/TIA-449 signals to travel greater distances than EIA/TIA-232 signals. The
recommended distance limits for EIA/TIA-449 shown in Table 2-2 are also valid for V.35, X.21, and
EIA-530. Typically, EIA/TIA-449 and EIA-530 can support 2-Mbps rates, and V.35 can support 4-Mbps
rates.
Asynchronous/Synchronous Serial Module Baud Rates
The following baud-rate limitations apply to the slow-speed serial interfaces found in the
asynchronous/synchronous serial modules:
•
Asynchronous interface—Maximum baud rate is 115.2 kbps.
•
Synchronous interface—Maximum baud rate is 128-kbps full duplex.
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3
Installing the Router
This chapter describes how to install your Cisco MWR 1941-DC router and connect it to networks and
external devices. It contains the following sections:
Warning
•
Installing Network Modules and Interface Cards, page 3-1
•
Rack Mounting the Chassis, page 3-2
•
Connecting the Console Terminal and Modem, page 3-3
•
Connecting the Network Cables, page 3-5
•
Connecting the MWR 1941-DC Router to a DC-Input Power Supply, page 3-10
•
Replacing or Upgrading the CF, page 3-13
•
What to Do After Installing the Hardware, page 3-20
Only trained and qualified personnel should be allowed to install, replace, or service this equipment.
Installing Network Modules and Interface Cards
Cisco routers are normally shipped with network modules, voice and WAN interface cards (VWICs), and
WAN interface cards (WICs) already installed. If you need to remove or install any of these items, refer
to the applicable documents online.
For network modules:
•
Quick Start Guide: Network Modules for Cisco 2600 Series, Cisco 3600 Series, Cisco 3700 Series,
and Cisco MWR 1941-DC Routers
•
Cisco Network Modules Hardware Installation Guide
For VWICs:
•
VWIC-2MFT-T1-DIR, VWIC-2MFT-E1-DIR Installation Instructions
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Rack Mounting the Chassis
For WICs:
•
Quick Start Guide: Interface Cards for Cisco 1600, 1700, 2600, 3600, 3700 Series, and Cisco
MWR 1941-DC Routers
•
Cisco Interface Cards Hardware Installation Guide
If there are modules, interface cards, or power supplies to be removed or installed, Cisco suggests that
you perform the installation or removal before you install the chassis. If a chassis cover needs to be
removed, the chassis may have to be removed from the rack to permit cover removal.
Rack Mounting the Chassis
You can mount the Cisco MWR 1941-DC router in a 19-inch rack that conforms to EIA-310-D
specification (the inside width of the rack should be 17.72 to 17.80 inches per the EIA-310-D
specification). The MWR 1941-DC router requires this minimum width and occupies 1U (1.75 inches)
of vertical space.
Warning
To prevent bodily injury when mounting or servicing this unit in a rack, you must take special
precautions to ensure that the system remains stable. The following guidelines are provided to ensure
your safety:
•
This unit should be mounted at the bottom of the rack if it is the only unit in the rack.
•
When mounting this unit in a partially filled rack, load the rack from the bottom to the top with the heaviest
component at the bottom of the rack.
•
If the rack is provided with stabilizing devices, install the stabilizers before mounting or servicing the unit in the
rack
Attaching the Brackets
Attach the mounting brackets to the chassis as shown, using the screws provided in the bracket kit.
Attach the second bracket to the opposite side of the chassis. Use a number 2 Phillips screwdriver to
install the bracket screws.
Three screws are required on each side. Figure 3-1 shows how the bracket is attached.
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Figure 3-1
BEFORE
INSTALLAT
ION
Attaching the Bracket
DSU
56K
SEE MA
NUAL BEF
ORE INS
TALLATION
CONSOL
E
AUXILIAR
65785
Y
Rack-mount bracket
Installing the Router in the Rack
Install the chassis in the rack. Rack-mounting screws are not provided with the router. Use three screws
for each side (supplied with the rack).
Connecting the Console Terminal and Modem
This section describes how to connect a console terminal and a modem to the router. You can connect
only a terminal to the console port. Use the auxiliary port with a terminal or a modem for remote access
to the router.
These ports provide administrative access to your router either locally (with a console terminal) or
remotely (with a modem).
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 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 3-2.) 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).
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Figure 3-2
Identifying a Rollover Cable
Pin 1 and pin 8
should be the
same color
Pin 8
H3824
Pin 1
Console Port
Take the following 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).
Note
Step 2
The RJ-45-to-DB-25 adapter (Cisco part number 29-0810-01) can be purchased from Cisco.
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, Cisco does not recommend
that modems be connected to the console port. Modems should always be connected to the
auxiliary port.
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Auxiliary Port
Take the following 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 online publication Cisco Modular
Access Router Cable Specifications available both on the Documentation CD-ROM and CCO.
Step 2
Make sure that your modem and the router auxiliary port are configured for the same transmission speed
(up to 115200 bps is supported) and hardware flow control with Data Carrier Detect (DCD) and Data
Terminal Ready (DTR) operations.
Connecting the Network Cables
This section describes connecting the following support MWR 1941-DC router interfaces:
•
Connecting the Fixed FE Interface Cables, page 3-5
•
Connecting the VWIC Interface Cables, page 3-6
•
Connecting the WIC-2A/S Interface Cables, page 3-8
•
Connecting the Network Module Interface Cables, page 3-9
Connecting the Fixed FE Interface Cables
The RJ-45 port supports standard straight-through and crossover Category 5 unshielded twisted-pair
(UTP) cables (refer to Figure 3-15). Cisco Systems does not supply Category 5 UTP cables; these cables
are available commercially.
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 3-3 shows the RJ-45 port and connector.
RJ-45 Port and Plug
87654321
RJ-45 connector
H2936
Figure 3-3
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Table 3-1 lists the pinouts and signals for the RJ-45 port.
Table 3-1
RJ-45 Pinout
Pin
Description
1
Receive Data + (RxD+)
2
RxD-
3
Transmit Data + (TxD+)
6
TxD-
Connecting the VWIC Interface Cables
How you connect the ports of the T1/E1 Multiflex VWIC depends on whether you are using the
MWR 1941-DC router in a redundant (IP-RAN implementations only) or a non-redundant configuration.
For redundant configurations, use a Y-cable (as described in Y-Cable Specifications, page 3-7).
Note
HSRP and the Y-cable mode must be configured for redundancy to allow one router to become active
(CD LED on, AL LED off) and the other to become the standby CD LED off, AL LED on due to no
framing). For more information, see the MWR 1941-DC Software Configuration Guide.
Step 1
Confirm that both routers are turned off.
Step 2
Connect the end of one of the Y-cable stubs to the T1 or E1 port on the card on the first router.
Step 3
Connect the end of the other Y-cable stub to the T1 or E1 port (using the same type of port as in Step 2)
on the card 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
Turn on power to the routers.
Step 6
Check that the CD LEDs goes on, which means that the cards’ 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 T1/E1 Multiflex VWIC 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 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 port on the card.
Step 3
Connect the other end to the BTS patch or demarcation panel at your site.
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Step 4
Turn on power to the router.
Step 5
Check that the CD LED goes on, 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 T1/E1 Multiflex VWIC uses an RJ-48C connection, as shown in Figure 3-4.
RJ-48C Connection
87654321
RJ-48C connector
24939
Figure 3-4
Table 3-2 shows the pinout configuration of the RJ-48C connectors on the T1/E1 Multiflex VWIC.
Table 3-2
RJ-48C Pinout
Pin
Description
1
receive tip
2
receive ring
3
receive shield
4
transmit tip
5
transmit ring
6
transmit shield
7
not used
8
not used
Y-Cable Specifications
Although it can be used in a standalone MWR 1941-DC router, the T1/E1 Multiflex VWIC is designed
to be used in redundant configurations in an IP-RAN implementation. Such configurations require a
special Y-cable for connecting the active and standby routers. The Y-cable provides a dual E1 or T1 PRI
connection.
This section describes the specifications of the Y-cable used in redundant configurations in an IP-RAN
implementation.
•
T1/E1 Multiflex VWIC Y-cables should be made with 4 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 (76 mm).
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Connecting the Network Cables
The cable length from junction point to the patch panel is determined by the customer.
MWR 1941-DC
Stubs
E1/
T1
Junction point
MWR 1941-DC
Patch panel
Y-Cable
E1/
T1
95459
•
•
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 where one wire is in use should be cut flush at both ends.
Connecting the WIC-2A/S Interface Cables
This section describes how to connect the 2-port asynchronous/synchronous (A/S) serial modules
(WIC-2A/S) when using with the MWR 1941-DC router in a Cell Site DCN implementation.
The 2-port A/S serial module has “smart” serial ports. The serial cable attached to one of the module's
ports can determine the electrical interface type and mode (DTE or DCE).
Six types of serial cables (also called serial adapter cables or serial transition cables) are available from
Cisco Systems for use with the 2-port A/S serial module:
•
EIA/TIA-232 serial cable assembly
•
EIA/TIA-449 serial cable assembly
•
V.35 serial cable assembly
•
X.21 serial cable assembly
•
EIA/TIA-530 serial cable assembly
•
EIA/TIA-530A serial cable assembly
All serial cables have a universal plug at the interface module end. The network end of each cable
provides the physical connectors that are most commonly used for the interface. For example, the
network end of the EIA/TIA-232 serial cable is a DB-25 connector, which is the most widely used
EIA/TIA-232 connector.
All serial interface types, except EIA-530, are available in DTE or DCE mode: DTE with a plug
connector at the network end and DCE with a receptacle at the network end. The V.35 assembly is
available in either mode with either gender at the network end. The EIA/TIA-530 assembly is available
in DTE only.
After you install the 2-port A/S serial module, use the appropriate serial cable to connect the serial port
on the module to one of the following types of equipment (see Figure 3-5):
•
Synchronous modem
•
DSU/CSU
•
Other DCE, if connecting to a digital WAN line
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Connecting the Network Cables
To connect the 2-port A/S serial module, perform these steps:
Step 1
Power off the MWR 1941-DC router.
Step 2
Connect one end of the appropriate serial cable to a DB-60 port on the module, as shown in Figure 3-5.
Step 3
Connect the other end of the cable to the appropriate type of equipment, as shown in Figure 3-5.
Step 4
Power on the Cisco MWR 1941-DC router.
Step 5
Verify that the CONN LED turns green, indicating that the serial port on the module detects the WAN
serial connection.
Figure 3-5
Connecting a 2-Port A/S Serial Module (WIC-2A/S)
Synchronous serial
port (DB-60)
CONN LED
CONN
SERIAL
Serial transition
cable
EIA/TIA-232, EIA/TIA-449, V.35,
X.21, or EIA-530 connector
H7370
DSU/CSU or
other DCE
Connecting the Network Module Interface Cables
With Cisco IOS Release 12.2(15)MC1a and later, the MWR 1941-DC router supports certain Cisco
network modules for implementation in a Cell-Site DCN.
For a list of supported network modules, see the “Cisco Network Modules” section on page 1-7.
For information on connecting the interface cables for the Cisco network modules supported on the
Cisco MWR 1941-DC router, see the Quick Start Guide, Network Modules for Cisco 2600 Series,
Cisco 3600 Series, Cisco 3700 Series and Cisco MWR 1941-DC Routers and the Cisco Network Modules
Hardware Installation Guide.
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Connecting the MWR 1941-DC Router to a DC-Input Power Supply
Connecting the MWR 1941-DC Router to a DC-Input Power
Supply
This section contains instructions for:
•
Required Tools and Equipment
•
Grounding the Router
•
Wiring the DC-Input Power Source
•
Powering On the Router
Required Tools and Equipment
You need the following tools and equipment:
•
Black terminal block connector (Phoenix part number 1756272; located in the accessory kit that
shipped with the router).
•
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.
Grounding the Router
Follow these steps to ground the router to earth ground. Make sure to follow any grounding requirements
at your site.
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.
Warning
When installing the unit, the ground connection must always be made first and disconnected last.
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Connecting the MWR 1941-DC Router to a DC-Input Power Supply
Step 1
Remove the ground-lug screw from the rear panel of the router (shown in Figure 1-4 on page 1-4). 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 (as shown below).
Insulation
Wire lead
10358
0.50" ± 0.02"
Slide the open end of your ground lug 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 to the 10-AWG
wire (as shown below).
Step 6
Use the screw to attach the ground lug and wire assembly to the rear panel of the switch.
Step 7
Using a ratcheting torque screwdriver, torque the ground-lug screw to 15 1bf-in (or 240 ounce-force
inches [240 ozf-in]).
10360
Step 4
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Wiring the DC-Input Power Source
Warning
Caution
Note
This product relies on the building’s installation for short-circuit (overcurrent) protection. Ensure that
the protective device is rated not greater than:
10A minimum, 60VDC
A readily accessible listed circuit breaker (rated 60VDC, 10A) should be available as the primary
disconnect device.
The installation must comply with the 1996 National Electric Code (NEC) and other applicable codes.
To connect the DC power supply to the Cisco MWR 1941-DC 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.
Step 2
Plug the 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 right-hand side of the back of the
MWR 1941-DC router.
Step 3
Connect one end of the customer-supplied power cord (18-AWG copper wire) to the DC power source.
Step 4
Plug the connector on the power supply cord into the connector that you plugged into the back of the
MWR 1941-DC 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.
Warning
Secure all power cabling when installing this unit to avoid disturbing field-wiring connections.
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Replacing or Upgrading the CF
Powering On the Router
Warning
After wiring the DC power supply, remove the tape from the circuit breaker switch handle and
reinstate power by moving the handle of the circuit breaker to the ON position.
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.
Warning
This equipment is intended to be grounded. Ensure that the host is connected to earth ground during
normal use.
To power on the router, do the following:
Step 1
Turn on the power supply at the circuit breaker.
Step 2
The LED labeled PWR on the front panel should go on.
If you encounter problems when you power on the router, see Appendix A, “Troubleshooting.”
Replacing or Upgrading the CF
This section describes how to remove, install, and format the external Compact Flash (CF).
The MWR 1941-DC router is shipped with a 32MB CF included (64MB CF separately orderable for Cell
Site DCN implementations). The CF contains the appropriate IOS software image. However, you may
need to replace or upgrade the CF at some point. If you do, follow the steps outlined below. This
procedure can also be used to make copies of the CF.
Step 1
Copy the desired IOS image to a remote TFTP server.
Step 2
Power up the MWR 1941-DC router to the ROMMON prompt.
Step 3
Boot the router with the existing IOS image.
Step 4
Remove the CF cover.
Step 5
Remove the current CF from the CF Slot. See Removing a CF Memory Card from an External Slot, page
3-14 for more information.
Step 6
Place a new CF into the CF Slot.
Step 7
Format the CF using the format slot0: command. See Formatting Procedures for CF Memory Cards,
page 3-15 for more information.
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Step 8
Issue a copy tftp slot0: command to copy the customer-ordered IOS image from the remote TFTP server
back to the CF.
Note
Ensure that the IOS image is the first file on the CF. Otherwise, the router will not boot. To avoid
naming conflicts, we recommend that you copy the file as mwr1941-i-mz.boot.
Step 9
Reboot the system to the ROMMON prompt.
Step 10
Boot the customer-ordered IOS image from the new CF.
Step 11
Upon successful booting of the image, replace the CF cover. If the boot process is unsuccessful, repeat
Step 6 through Step 10.
Removing a CF Memory Card from an External Slot
Complete the following steps to remove a CF memory card from an external slot:
Caution
Do not remove the CF memory card while it is performing a read or write operation, because the router
will shut down and the file system will be damaged.
Step 1
Locate the CF memory card in its slot in the front panel of the chassis. See Figure 1-3 on page 1-4.
Step 2
Move the release button, located next to the slot, to its fully extended position, and press the button to
unseat the card.
Step 3
Carefully pull the card out of the slot.
Step 4
Place the removed CF memory card on an antistatic surface or in a static shielding bag.
Installing a CF Memory Card in an External Slot
Complete the following steps to install a CF memory card:
Step 1
Locate the CF memory-card slot in the front panel of the chassis.See Figure 1-3 on page 1-4.
Step 2
With the label facing up, insert the connector end of the CF memory card into the slot until the card is
seated in the connector and the release button is pushed out. The card is keyed so that it cannot be
inserted wrong.
Step 3
Pull the release button out and move it to the left, to latch the card in the slot.
Step 4
Refer to the “Formatting Procedures for CF Memory Cards” section for instructions on formatting the
CF memory card.
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Formatting Procedures for CF Memory Cards
For the Cisco MWR 1941-DC router, Cisco recommends that you format/erase new CF memory cards
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.
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 as a DOS File System
To format a new external CF memory card, or to remove the files from a previously installed external 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 DOS
File 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:250592
Format:Total bytes in formatted partition:128303104
Format:Operation completed successfully.
Format of flash complete
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File and Directory Procedures
The following sections describe file and directory procedures for external 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]?
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
6458584 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 an external CF memory card with a
Class C Flash file system:
Router# dir slot0:
Directory of slot0:/
3
1579
-rw-rw-
6455048
6458584
Mar 01 2001 00:04:06
Mar 01 2001 00:24:38
mwr1900-i-mz
mwr1900-i-mz.new
15912960 bytes total (2998272 bytes free)
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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 an external
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
512
Total Sectors
31360
ATA CARD FORMAT
Number of FAT Sectors
Sectors Per Cluster
Number of Clusters
Number of Data Sectors
Base Root Sector
Base FAT Sector
Base Data Sector
12
8
3885
31264
152
128
184
Please use "dir" command to display the contents of the card.
Delete Files from Flash
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 an external 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)
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Rename a File in Flash
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 an external 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
3
-rw-rw-
6462268
6458388
Mar 06 1993 06:14:02
Mar 01 1993 00:01:24
mwr1900-i-mz.1941ata
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 command on an external CF card:
Router# more slot0:mwr1900-i-mz.tmp
00000000: 7F454C46
00000010: 00020061
00000020: 00000054
00000030: 00050008
00000040: 80008000
00000050: 0000011C
00000060: 80008000
00000070: 00000000
00000080: 00000001
00000090: 00000700
000000A0: 00000000
000000B0: 8000C700
000000C0: 00000000
000000D0: 00000001
000000E0: 00000020
000000F0: 00000000
00000100: 8000CAA0
00000110: 00000000
00000120: 679C4A80
00000130: AC3FC710
00000140: AC25C718
00000150: AC27C720
00000160: AC31C728
--More-- q
01020100
00000001
20000001
00000001
00628A44
0000001B
0000011C
00000008
00000002
00000000
00000029
0000481C
00000004
10000003
00000000
0000002F
00004BBC
00000008
3C018001
3C018001
3C018001
3C018001
3C018001
00000000
80008000
00340020
0000011C
00650EEC
00000001
00004000
00000000
8000C000
00000000
00000001
00000380
00000000
8000CA80
00000000
00000001
00623FA4
00000000
AC3DC70C
AC24C714
AC26C71C
AC30C724
AC32C72C
00000000
00000034
00010028
80008000
00000007
00000006
00000000
00000021
0000411C
00000004
00000003
00000000
0000002F
00004B9C
00000008
10000003
00000000
3C1C8001
3C018001
3C018001
3C018001
3C018001
3C018001
.ELF
...a
...T
....
....
....
....
....
....
....
....
..G.
....
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..J
....
g.J.
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....
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..H.
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Create a New Directory
To create a directory in CF memory, use the mkdir slot0: directory-name command.
The following example shows output for first displaying the contents of an external CF card, and then
creating a directory named config and a subdirectory named test-config:
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:/config
Router# mkdir slot0:/config/test-config
Create directory filename [/config/test-config]?
Created dir slot0:/config/test-config
Router# dir slot0:
Directory of slot0:/
3 -rw1580 drw-
6458208
Mar 01 1993 00:04:08 mwr1941-i-mz.tmp
Mar 01 1993 23:48:36 config
0
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 an external CF card, then removing
the subdirectory named test-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)
Router# rmdir slot0:/config/test-config
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Remove directory filename [/config/test-config]?
Delete slot0:/config/test-config? [confirm]
Removed dir slot0:/config/test-config
Router# 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 Hardware
When you have installed the router hardware, see the Cisco MWR 1941-DC Software Configuration
Guide for initial software configuration information.
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A P P E N D I X
A
Troubleshooting
Your Cisco MWR 1941-DC router goes through extensive testing before leaving 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, page A-1
•
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
Problem Solving
The 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, page A-4.
When problem solving, consider the following router subsystems:
•
Power and cooling systems—External power source, power cable, router power supply and circuit
breaker, and router blower and fan. Also consider inadequate ventilation or air circulation.
•
Modules—LEDs on the modules help identify a failure.
•
Cables—External cables that connect the router to the network.
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Appendix A
Troubleshooting
Problem Solving
Troubleshooting the Power and Cooling Systems
Both the power LED and the fans can help you troubleshoot a power problem. Check the following items
to help isolate the problem:
Check the following items to help isolate problems with the power supply installation:
•
With the MWR 1941-DC router connected to the power source, is the power 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 a short time?
– 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 1-9.
•
Does the router partially boot, but the LEDs do not go on?
– Check for a power supply failure by inspecting the power LED on the front panel of the router.
If the power LED is on, the power supply is functional.
– If the power LED is not on, refer to the Cisco Information Packet for warranty information or
contact customer service.
Environmental Reporting Features
The MWR 1941-DC router has a temperature sensor to detect over-temperature conditions inside the
chassis. The over-temperature detection trips at 75°C +/- 5%. This condition is reported to the processor
as an interrupt and software then takes action on this interrupt to generate the appropriate alarming. If
the router reaches a temperature of 90°C, the power supply will cycle to prevent the box from exceeding
that temperature in a powered up state.
If the router is operating at an abnormally high temperature, you see the following message on the
console screen:
%SYS-1-OVERTEMP: System detected OVERTEMPERATURE condition. Please resolve cooling problem
immediately!
Some causes of abnormally high router temperature are:
•
Fan failure
•
Air conditioner failure in the room
•
Air blockage to cooling vents
Take steps to correct the problem. For information about environmental operating conditions, see
“System Specifications” section on page 1-9.
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Appendix A
Troubleshooting
Problem Solving
Troubleshooting Modules, Cables, and Connections
Network 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 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 Reading the LEDs, 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 the module is firmly seated in its slot.
– Check external cable connections.
– Make sure you have a version of Cisco IOS software that supports the module.
•
Router does not boot properly, or constantly or intermittently reboots.
– Make sure the module is firmly seated in its slot.
– Check the router chassis or software. Refer to the Cisco Information Packet publication that
shipped with your router for warranty information, 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 same data rate as configured for the router (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. Refer to the Cisco Information Packet publication that accompanied your
order for warranty information, 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. Refer to the Cisco Information Packet
publication for warranty information, or contact customer service.
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Appendix A
Troubleshooting
Reading the LEDs
Reading the LEDs
The LEDs on the front panel of the router enable you to determine router performance and operation.
Figure A-1 shows the locations of the LEDs.
Figure A-1
Front Panel of the MWR 1941-DC
Serial 0/3
Serial 0/1
Serial 0/2
Serial 0/0
SERIAL
A/S
CN/LP
RXC
RXD
TXC
TXD
2
CN/LP
RXC
RXD
TXC
TXD
1
CN/LP
RXC
RXD
TXC
TXD
0
CN/LP
RXC
RXD
TXC
TXD
EN
SEE MAN
UAL BEFO
RE INST
ALLATION
Serial 1/3
Serial 1/1
Serial 1/2
Serial 1/0
SEE MAN
UAL BEFO
RE INST
ALLATION
FE1
CONSOL
FE0
Table A-1
DSU
56K
E
AUXILIA
DSU
56K
98716
3
RY
Console
port
Auxiliary
port
Chassis LEDs
LED
Color
Status
Power
Green
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.
Green
The router’s 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
Packets or idle contexts are being processed by the PXF.
Off
No PXF activity is occurring.
Status
Activity
Table A-2
Fast Ethernet Connector LEDs
LED
Color
Status
Activity
Green
Data is being transmitted on the link.
Off
No data is being transmitted.
Green
100 Mbps communication speed attained.
Off
10 Mbps communication speed attained, or no link established.
Green
Ethernet link is established.
Off
No established link.
Speed
Link
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Appendix A
Troubleshooting
Reading the LEDs
Table A-3
VWIC LEDs
LED
Color
Description
Loopback
Amber
A loopback or line state is detected or is manually set by the user.
Off
Normal operation.
Amber
A local or remote alarm state.
Off
Normal operation.
Alarm
Carrier Detect Green
Off
A carrier has been detected and the internal DSU/CSU in the WAN
interface card is communicating with another DSU/CSU. This LED is on
during normal operation.
No carrier has been detected.
Note
In a redundant configuration, when the relays of the VWIC close, the Carrier Detect LED on the T1 ports
will remain lit and the Alarm LED will go off. When the router is inactive, the ALARM LED will be lit
(due to no framing) and the Carrier Detect LED will be off.
Note
For information about the LEDs of network modules and WICs not covered in this appendix, see the
Cisco Network Module Installation Guide and the Cisco Interface Card Installation Guide.
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Appendix A
Troubleshooting
Reading the LEDs
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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
Cisco MWR 1941-DC router.
This document includes:
Note
•
Warning Conventions
•
Console and Auxiliary Port Signals and Pinouts
•
Ethernet Cable Pinouts
•
Fast Ethernet Connector Pinouts
•
T1/E1 Trunk and DigitaSl Voice Port Pinouts (RJ-48)
•
Serial Connection Signals and Pinouts
•
Smart Serial Connection Signals and Pinouts
All pins not listed in the tables in this document are not connected.
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Appendix B
Cable Specifications
Warning Conventions
Warning Conventions
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
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Appendix B
Cable Specifications
Warning Conventions
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
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Appendix B
Cable Specifications
Warning Conventions
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
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Appendix B
Cable Specifications
Console and Auxiliary Port Signals and Pinouts
Console and Auxiliary Port Signals and Pinouts
Your router comes with a console and auxiliary cable kit, which contains the cable and adapters you need
to connect a console terminal (an ASCII terminal or PC running terminal emulation software) or 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, proceed to the “Console Port Signals and Pinouts” section on page B-5; for
modem connections, proceed to the “Auxiliary Port Signals and Pinouts” section on page B-6.
Console Port Signals and Pinouts
Use the thin, flat, RJ-45-to-RJ-45 roll-over cable and 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
PC
RJ-45-to-RJ-45
rollover cable
RJ-45-to-DB-9 adapter
(labeled TERMINAL)
Table B-1
H7226
Router
Console Port Signaling and Cabling Using a DB-9 Adapter
Console
Port (DTE)
RJ-45-to-RJ-45
Rollover Cable
Signal
RJ-45 Pin
1
RJ-45-to-DB-9
Terminal Adapter
(connected to Rollover
Cable)
Console
Device
RJ-45 Pin
DB-9 Pin
Signal
8
8
CTS
RTS
1
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
1
7
RTS
CTS
8
1
1. Pin 1 is connected internally to pin 8
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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).
Table B-2
Console Port Signaling and Cabling Using a DB-25 Adapter
Console
Port (DTE)1
RJ-45-to-RJ-45
Rollover Cable
Signal
RJ-45 Pin
2
RJ-45-to-DB-25
Terminal Adapter
Console
Device
RJ-45 Pin
DB-25 Pin
Signal
8
5
CTS
RTS
1
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
1
4
RTS
CTS
8
1
1. You can use the same cabling to connect a console to the auxiliary port
2. Pin 1 is connected internally to pin 8
Auxiliary Port Signals and Pinouts
Table 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-3
Auxiliary Port Signaling and Cabling Using a DB-25 Adapter
Auxiliary
Port (DTE)
RJ-45-to-RJ-45
Roll-Over Cable
Signal
RJ-45 Pin
1
RJ-45-to-DB-25
Modem Adapter
Modem
RJ-45 Pin
DB-25 Pin
Signal
8
4
RTS
RTS
1
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
1
5
CTS
CTS
8
1
1. Pin 1 is connected internally to pin 8.
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Appendix B
Cable Specifications
Ethernet Cable Pinouts
You can identify a rollover cable by comparing 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
Pin 1 and pin 8
should be the
same color
Pin 1
H3824
Pin 8
Ethernet Cable Pinouts
This section describes the Ethernet AUI Cable Pinouts and the 10BaseT Connector Pinouts.
Ethernet AUI Cable Pinouts
Figure B-3 shows the Ethernet (AUI) cable assembly and Table B-4 lists the pinouts.
Figure B-3
Ethernet (AUI) Cable Assembly
J1-1
J1-9
J1
J2
H1031a
J2-1
J2-9
J1-15
J1-8
J2-15
J2-8
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Appendix B
Cable Specifications
Ethernet Cable Pinouts
Table B-4
Ethernet (AUI) Pinouts
Pin
Ethernet Circuit
Signal Name
3
DO-A
Data Out Circuit A
10
DO-B
Data Out Circuit B
11
DO-S
Data Out Circuit Shield
5
DI-A
Data In Circuit A
12
DI-B
Data In Circuit B
4
DI-S
Data In Circuit Shield
7
CO-A
Control Out Circuit A (not connected)
15
CO-B
Control Out Circuit B (not connected)
8
CO-S
Control Out Circuit Shield (not connected)
2
CI-A
Control In Circuit A
9
CI-B
Control In Circuit B
1
CI-S
Control In Circuit Shield
6
VC
Voltage Common
13
VP
Voltage Plus
14
VS
Voltage Shield (L25 and M25)
Shell
PG
Protective Ground
10BaseT Connector Pinouts
Figure B-4 shows the 10BaseT connector (RJ-45) and Table B-5 lists its pinouts.
10BaseT Connector (RJ-45)
H7316
Figure B-4
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Appendix B
Cable Specifications
Fast Ethernet Connector Pinouts
Table B-5
10BaseT Connector (RJ-45) Pinouts
Pin1
Description
1
TX+
2
TX–
3
RX+
4
–
5
–
6
RX–
7
–
8
–
1. Any pin not described is not
connected
Fast Ethernet Connector Pinouts
This section illustrates the Fast Ethernet 100BaseTX (RJ-45) connector and lists its pinout and signal
descriptions.
Figure B-5 shows the 100BaseTX RJ-45 connector, and Table B-6 lists its pinout. 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-5
100BaseTX RJ-45 Connector
RJ-45 (both ends)
H1567
Pin 1
Pin 8
Table B-6
RJ-45 Connector Pinout
Pin
Signal
1
TX+
2
TX–
3
RX+
6
RX–
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Appendix B
Cable Specifications
T1/E1 Trunk and DigitaSl Voice Port Pinouts (RJ-48)
T1/E1 Trunk and DigitaSl Voice Port Pinouts (RJ-48)
Figure B-6 shows the RJ-48 connector wiring for the T1/E1 trunk cable and the digital voice port cable;
Table B-7 lists the pinouts.
Figure B-6
8
H11419
1
RJ-48-to-RJ-48 T1/E1 Cable Wiring
Serial Connection Signals and Pinouts
Table B-7
Pinouts for T1/E1 Trunk and Digital Voice Port (RJ-48)
Pin1
Signal
1
RX (input)
2
RX (input)
3
–
4
TX (output)
5
TX (output)
6
–
7
–
8
–
1. Any pin not referenced on a connector is not connected.
This section provides information about the 1-port serial WAN interface card. With the appropriate serial
transition cable, this card can provide an EIA/TIA-232, EIA/TIA-449, V.35, X.21, DTE/DCE, EIA-530
DTE, or NRZ/NRZI serial interface.
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Appendix B
Cable Specifications
Serial Connection Signals and Pinouts
Types of Serial Cables
Six types of serial cables (also called serial adapter cables or serial transition cables) are available from
Cisco Systems:
•
EIA/TIA-232 Interface
•
EIA/TIA-449 Interface
•
V.35 Interface
•
X.21 Serial Cable Assembly
•
EIA-530 Interface
All serial cables provide a universal plug at the interface card end. The network end of each cable
provides the physical connectors most commonly used for the interface. For example, the network end
of the EIA/TIA-232 serial cable is a DB-25 connector, the most widely used EIA/TIA-232 connector.
All serial interface types except EIA-530 are available in DTE or DCE format: DTE with a plug
connector (male) at the network end and DCE with a receptacle (female) at the network end. V.35 is
available in either mode with either gender at the network end. EIA-530 is available in DTE only.
Connecting the Card to the Network
Note
The serial WAN interface card uses a universal high-density, 60-pin receptacle. Each universal port
requires a serial port adapter cable that determines the port’s electrical interface type and mode: DTE or
DCE. Although all port adapter cables use a universal plug at the quad serial module end, the network
end of each cable type uses the physical connectors commonly used for the interface. (For example, the
network end of the EIA/TIA-232 port adapter cable is a DB-25 connector, the most widely used
EIA/TIA-232 connector.)
After you install the serial WAN interface card, use the appropriate serial cable to connect the interface
card’s DB-60 serial port to one of the following types of equipment:
•
An asynchronous modem, if connecting to an analog telephone line
•
A synchronous modem, data service unit/channel service unit (DSU/CSU), or other data
circuit-terminating equipment (DCE), if connecting to a digital WAN line
EIA/TIA-232 Interface
This section contains the following topics:
•
EIA/TIA-232 Connections
•
EIA/TIA-232 Serial Cable Assembly
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Appendix B
Cable Specifications
Serial Connection Signals and Pinouts
EIA/TIA-232 Connections
EIA/TIA-232 supports unbalanced circuits at signal speeds up to 64 kbps. The network end of the
adapter cable is a standard 25-pin D-shell connector known as a DB-25. (See Figure B-7.) The router
console and auxiliary ports also use EIA/TIA-232 connections; however, the serial module ports support
synchronous connections, and the console and auxiliary ports support asynchronous connections.
Figure B-7
EIA/TIA-232 Adapter Cable Connectors, Network End
DCE
H1343a
DTE
EIA/TIA-232 Serial Cable Assembly
Figure B-8 shows the EIA/TIA-232 serial cable assembly. Table B-8 lists the DTE pinout and Table B-9
lists the DCE pinout. Arrows indicate signal direction: —> means DTE to DCE and <— means DCE to
DTE.
Figure B-8
EIA/TIA-232 Cable Assembly
J1-46
J1-45
J1-16
J1-15
60-pin connector (J1)
25-pin connector (J2)
H1972
J2-13
J2-25
J2-14
J2-1
J1-1
J1-30
J1-31
J1-60
Table B-8
Connectors are not to scale.
EIA/TIA-232 DTE Cable Pinout (DB-60 to DB-25)
60-Pin
Signal
J1-50
J1-51
J1-52
Note
Direction 25-Pin
Signal
Shorting group
MODE_0
GND
MODE_DC
E
–
–
–
J1-46
Shield
GND
Single
–
J2-1
Shield
GND
J1-46
Shield
GND
Single
–
J2-1
Shield
GND
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Appendix B
Cable Specifications
Serial Connection Signals and Pinouts
Table B-8
EIA/TIA-232 DTE Cable Pinout (DB-60 to DB-25) (continued)
60-Pin
Signal
Note
Direction 25-Pin
Signal
J1-41
Shield
TXD/RXD
–
Twisted pair no. 5
—>
–
J2-2
Shield
TXD
–
J1-36
Shield
RXD/TXD
–
Twistsed pair no. 9
<—
–
J2-3
Shield
RXD
–
J1-42
Shield
RTS/CTS
–
Twisted pair no. 4
—>
–
J2-4
Shield
RTS
–
J1-35
Shield
CTS/RTS
–
Twisted pair no. 10
<—
–
J2-5
Shield
CTS
–
J1-34
Shield
DSR/DTR
–
Twisted pair no. 11
<—
–
J2-6
Shield
DSR
–
J1-45
Shield
Circuit
GND
–
Twisted pair no. 1
–
–
J2-7
Shield
Circuit
GND
–
J1-33
Shield
DCD/LL
–
Twisted pair no. 12
<—
–
J2-8
Shield
DCD
–
J1-37
Shield
TXC/NIL
–
Twisted pair no. 8
<—
–
J2-15
Shield
TXC
–
J1-38
Shield
RXC/TXC
E
–
Twisted pair no. 7
<—
–
J2-17
Shield
RXC
–
J1-44
Shield
LL/DCD
–
Twisted pair no. 2
—>
–
J2-18
Shield
LTST
–
J1-43
Shield
DTR/DSR
–
Twisted pair no. 3
—>
–
J2-20
Shield
DTR
–
J1-39
Shield
TXCE/TXC
–
Twisted pair no. 6
—>
–
J2-24
Shield
TXCE
–
Table B-9
EIA/TIA-232 DCE Cable Pinout (DB-60 to DB-25)
60-Pin
Signal
Note
Direction 25-Pin
Signal
J1-50
J1-51
MODE_0
GND
Shorting group
–
–
–
J1-36
Shield
RXD/TXD
–
Twisted pair no. 9
<—
–
J2-2
Shield
TXD
–
J1-41
Shield
TXD/RXD
–
Twisted pair no. 5
—>
–
J2-3
Shield
RXD
–
J1-35
Shield
CTS/RTS
–
Twisted pair no. 10
<—
–
J2-4
Shield
RTS
–
J1-42
Shield
RTS/CTS
–
Twisted pair no. 4
—>
–
J2-5
Shield
CTS
–
J1-43
Shield
DTR/DSR
–
Twisted pair no. 3
—>
–
J2-6
Shield
DSR
–
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B-13
Appendix B
Cable Specifications
Serial Connection Signals and Pinouts
Table B-9
EIA/TIA-232 DCE Cable Pinout (DB-60 to DB-25) (continued)
60-Pin
Signal
Note
Direction 25-Pin
Signal
J1-45
Shield
Circuit
GND
–
Twisted pair no. 1
–
–
J2-7
Shield
Circuit
GND
J1-44
Shield
LL/DCD
–
Twisted pair no. 2
—>
–
J2-8
Shield
DCD
–
J1-39
Shield
TXCE/TX
C
–
Twisted pair no. 7
—>
–
J2-15
Shield
TXC
–
J1-40
Shield
NIL/RXC
–
Twisted pair no. 6
—>
–
J2-17
Shield
RXC
–
J1-33
Shield
DCD/LL
–
Twisted pair no. 12
<—
–
J2-18
Shield
LTST
–
J1-34
Shield
DSR/DTR
–
Twisted pair no. 11
<—
–
J2-20
Shield
DTR
–
J1-38
Shield
RXC/TXC
E
–
Twisted pair no. 8
<—
–
J2-24
Shield
TXCE
–
EIA/TIA-449 Interface
This section contains the following topics:
•
EIA/TIA-449 Connections
•
EIA/TIA-449 Serial Cable Assembly
EIA/TIA-449 Connections
EIA/TIA-449, which supports balanced (EIA/TIA-422) and unbalanced (EIA/TIA-423) transmissions,
is a faster (up to 2 Mbps) version of EIA/TIA-232 that provides more functions and supports
transmissions over greater distances.
The EIA/TIA-449 standard was intended to replace the EIA/TIA-232 standard, but it was not widely
adopted primarily because of the large installed base of DB-25 hardware and because of the larger size
of the 37-pin EIA/TIA-449 connectors, which limited the number of connections possible (fewer than
possible with the smaller, 25-pin EIA/TIA-232 connector).
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Appendix B
Cable Specifications
Serial Connection Signals and Pinouts
The network end of the EIA/TIA-449 adapter cable provides a standard 37-pin D-shell connector.
(See Figure B-9.) EIA/TIA-449 cables are available as either DTE (DB-37 plug) or DCE (DB-37
receptacle).
Figure B-9
EIA/TIA-449 Adapter Cable Connectors, Network End
DCE
H1344a
DTE
EIA/TIA-449 Serial Cable Assembly
Figure B-10 shows the EIA/TIA-449 serial cable assembly. Table B-10 lists the DTE pinout and
Table B-11 lists the DCE pinout. Arrows indicate signal direction: —> means DTE to DCE and <—
means DCE to DTE.
Figure B-10 EIA/TIA-449 Serial Cable Assembly
60-pin connector (J1)
37-pin connector (J2)
J2-19
J2-37
H1973
J1-46
J1-45
J1-16
J1-15
J1-1
J1-30
J1-31
J1-60
J2-20
J2-1
Connectors are not to scale.
Table B-10 EIA/TIA-449 DTE Cable Pinout (DB-60 to DB-37)
60-Pin
Signal Name
Note
Direction 37-Pin
Signal Name
J1-49
J1-48
MODE_1
GND
Shorting group
–
–
–
J1-51
J1-52
GND
Shorting group
MODE_DCE
–
–
–
J1-46
Shield_GND
Single
_
J2-1
Shield GND
J1-11
J1-12
TXD/RXD+
TXD/RXD–
Twisted pair no. 6
—>
—>
J2-4
J2-22
SD+
SD–
J1-24
J1-23
TXC/RXC+
TXC/RXC–
Twisted pair no. 9
<—
<—
J2-5
J2-23
ST+
ST–
J1-28
J1-27
RXD/TXD+
RXD/TXD–
Twisted pair no. 11
<—
<—
J2-6
J2-24
RD+
RD–
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B-15
Appendix B
Cable Specifications
Serial Connection Signals and Pinouts
Table B-10 EIA/TIA-449 DTE Cable Pinout (DB-60 to DB-37) (continued)
60-Pin
Signal Name
Note
Direction 37-Pin
Signal Name
J1-9
J1-10
RTS/CTS+
RTS/CTS–
Twisted pair no. 5
—>
—>
J2-7
J2-25
RS+
RS–
J1-26
J1-25
RXC/TXCE+ Twisted pair no. 10
RXC/TXCE–
<—
<—
J2-8
J2-26
RT+
RT–
J1-1
J1-2
CTS/RTS+
CTS/RTS–
<—
<—
J2-9
J2-27
CS+
CS–
J1-44
J1-45
LL/DCD
Twisted pair no. 12
Circuit_GND
—>
_
J2-10
J2-37
LL
SC
J1-3
J1-4
DSR/DTR+
DSR/DTR–
Twisted pair no. 2
<—
<—
J2-11
J2-29
DM+
DM–
J1-7
J1-8
DTR/DSR+
DTR/DSR–
Twisted pair no. 4
—>
—>
J2-12
J2-30
TR+
TR–
J1-5
J1-6
DCD/DCD+
DCD/DCD–
Twisted pair no. 3
<—
<—
J2-13
J2-31
RR+
RR–
J1-13
J1-14
TXCE/TXC+ Twisted pair no. 7
TXCE/TXC–
—>
—>
J2-17
J2-35
TT+
TT–
J1-15
J1-16
Circuit_GND Twisted pair no. 9
Circuit_GND
–
–
J2-19
J2-20
SG
RC
Twisted pair no. 1
Table B-11 EIA/TIA-449 DCE Cable Pinout (DB-60 to DB-37)
60-Pin
Signal Name
Note
Direction 37-Pin
Signal Name
J1-49
J1-48
MODE_1
GND
Shorting group
–
–
–
J1-46
Shield_GND
Single
–
J2-1
Shield GND
J1-28
J1-27
RXD/TXD+
RXD/TXD–
Twisted pair no. 11
<—
<—
J2-4
J2-22
SD+
SD–
J1-13
J1-14
TXCE/TXC+ Twisted pair no. 7
TXCE/TXC–
—>
—>
J2-5
J2-23
ST+
ST–
J1-11
J1-12
TXD/RXD+
TXD/RXD–
Twisted pair no. 6
—>
—>
J2-6
J2-24
RD+
RD–
J1-1
J1-2
CTS/RTS+
CTS/RTS–
Twisted pair no. 1
<—
<—
J2-7
J2-25
RS+
RS–
J1-24
J1-23
TXC/RXC+
TXC/RXC–
Twisted pair no. 9
—>
—>
J2-8
J2-26
RT+
RT–
J1-9
J1-10
RTS/CTS+
RTS/CTS–
Twisted pair no. 5
—>
—>
J2-9
J2-27
CS+
CS–
J1-29
J1-30
NIL/LL
Twisted pair no. 12
Circuit_GND
—>
–
J2-10
J2-37
LL
SC
J1-7
J1-8
DTR/DSR+
DTR/DSR–
—>
—>
J2-11
J2-29
DM+
DM–
Twisted pair no. 4
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Appendix B
Cable Specifications
Serial Connection Signals and Pinouts
Table B-11 EIA/TIA-449 DCE Cable Pinout (DB-60 to DB-37) (continued)
60-Pin
Signal Name
Note
Direction 37-Pin
Signal Name
J1-3
J1-4
DSR/DTR+
DSR/DTR–
Twisted pair no. 2
<—
<—
J2-12
J2-30
TR+
TR–
J1-5
J1-6
DCD/DCD+
DCD/DCD–
Twisted pair no. 3
—>
—>
J2-13
J2-31
RR+
RR–
J1-26
J1-25
RXC/TXCE+ Twisted pair no. 10
RXC/TXCE–
<—
<—
J2-17
J2-35
TT+
TT–
J1-15
J1-16
Circuit_GND Twisted pair no. 8
Circuit_GND
_
_
J2-19
J2-20
SG
RC
V.35 Interface
This section contains the following topics:
•
V.35 Connections
•
V.35 Serial Cable Assembly
V.35 Connections
The V.35 interface is recommended for speeds up to 48 kbps, although in practice it is used successfully
at 4 Mbps.
The network end of the V.35 adapter cable provides a standard 34-pin Winchester-type connector.
(See Figure B-11.) V.35 cables are available with a standard V.35 plug or receptacle in either DTE or
DCE mode.
Figure B-11 V.35 Adapter Cable Connectors, Network End
DCE
H1616a
DTE
V.35 Serial Cable Assembly
Figure 12 shows the V.35 serial cable assembly. Table B-12 lists the DTE pinout and Table B-13 lists the
DCE pinout. Arrows indicate signal direction: —> means DTE to DCE and <— means DCE to DTE.
Cisco MWR 1941-DC Mobile Wireless Edge Router Hardware Installation Guide
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Appendix B
Cable Specifications
Serial Connection Signals and Pinouts
Figure B-12 V.35 Serial Cable Assembly
60-pin connector (J1)
J1-1
J1-30
J1-31
J1-60
34-pin connector (J2)
J2-B
J2-D
J2-A
J2-C
J2-KK
J2-MM
J2-LL
J2-NN
Connectors are not to scale.
H1975
J1-46
J1-45
J1-16
J1-15
Table B-12 V.35 DTE Cable Pinout (DB-60 to Winchester-Type 34-Pin)
60-Pin
Signal Name
Type
Direction 34-Pin
Signal Name
J1-49
J1-48
MODE_1
GND
Shorting group
–
–
–
J1-50
J1-51
J1-52
MODE_0
Shorting group
GND
MODE_DCE
–
–
–
J1-53
J1-54
J1-55
J1-56
TxC/NIL
RxC_TxCE
RxD/TxD
GND
Shorting group
–
–
–
J1-46
Shield_GND
Single
–
J2-A
Frame GND
J1-45
Shield
Circuit_GND Twisted pair no. 12
–
–
–
J2-B
Shield
Circuit GND
–
J1-42
Shield
RTS/CTS
–
Twisted pair no. 9
—>
–
J2-C
Shield
RTS
–
J1-35
Shield
CTS/RTS
–
Twisted pair no. 8
<—
–
J2-D
Shield
CTS
–
J1-34
Shield
DSR/DTR
–
Twisted pair no. 7
<—
–
J2-E
Shield
DSR
–
J1-33
Shield
DCD/LL
–
Twisted pair no. 6
<—
–
J2-F
Shield
RLSD
–
J1-43
Shield
DTR/DSR
–
Twisted pair no. 10
—>
–
J2-H
Shield
DTR
–
J1-44
Shield
LL/DCD
–
Twisted pair no. 11
—>
–
J2-K
Shield
LT
–
J1-18
J1-17
TxD/RxD+
TxD/RxD–
Twisted pair no. 1
—>
—>
J2-P
J2-S
SD+
SD–
J1-28
J1-27
RxD/TxD+
RxD/TxD–
Twisted pair no. 5
<—
<—
J2-R
J2-T
RD+
RD–
J1-20
J1-19
TxCE/TxC+
TxCE/TxC–
Twisted pair no. 2
—>
—>
J2-U
J2-W
SCTE+
SCTE–
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Appendix B
Cable Specifications
Serial Connection Signals and Pinouts
Table B-12 V.35 DTE Cable Pinout (DB-60 to Winchester-Type 34-Pin) (continued)
60-Pin
Signal Name
Type
Direction 34-Pin
Signal Name
J1-26
J1-25
RxC/TxCE+
RxC/TxCE–
Twisted pair no. 4
<—
<—
J2-V
J2-X
SCR+
SCR–
J1-24
J1-23
TxC/RxC+
TxC/RxC–
Twisted pair no. 3
<—
<—
J2-Y
J2-AA
SCT+
SCT–
Table B-13 V.35 DCE Cable Pinout (DB-60 to Winchester-Type 34-Pin)
60-Pin
Signal Name
Type
Direction 34-Pin
Signal Name
J1-49
J1-48
MODE_1
GND
Shorting group
–
–
–
J1-50
J1-51
MODE_0
GND
Shorting group
–
–
–
J1-53
J1-54
J1-55
J1-56
TxC/NIL
RxC_TxCE
RxD/TxD
GND
Shorting group
–
–
–
J1-46
Shield_GND
Single
–
J2-A
Frame GND
J1-45
Shield
Circuit_GND Twisted pair no. 12
–
–
–
J2-B
Shield
Circuit GND
–
J1-35
Shield
CTS/RTS
–
Twisted pair no. 8
<—
–
J2-C
Shield
RTS
–
J1-42
Shield
RTS/CTS
–
Twisted pair no. 9
—>
–
J2-D
Shield
CTS
–
J1-43
Shield
DTR/DSR
–
Twisted pair no. 10
—>
–
J2-E
Shield
DSR
–
J1-44
Shield
LL/DCD
–
Twisted pair no. 11
—>
–
J2-F
Shield
RLSD
–
J1-34
Shield
DSR/DTR
–
Twisted pair no. 7
<—
–
J2-H
Shield
DTR
–
J1-33
Shield
DCD/LL
–
Twisted pair no. 6
<—
–
J2-K
Shield
LT
–
J1-28
J1-27
RxD/TxD+
RxD/TxD–
Twisted pair no. 5
<—
<—
J2-P
J2-S
SD+
SD–
J1-18
J1-17
TxD/RxD+
TxD/RxD–
Twisted pair no. 1
—>
—>
J2-R
J2-T
RD+
RD–
J1-26
J1-25
RxC/TxCE+
RxC/TxCE–
Twisted pair no. 4
<—
<—
J2-U
J2-W
SCTE+
SCTE–
J1-22
J1-21
NIL/RxC+
NIL/RxC–
Twisted pair no. 3
—>
—>
J2-V
J2-X
SCR+
SCR–
J1-20
J1-19
TxCE/TxC+
TxCE/TxC–
Twisted pair no. 2
—>
—>
J2-Y
J2-AA
SCT+
SCT–
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B-19
Appendix B
Cable Specifications
Serial Connection Signals and Pinouts
X.21 Interface
This section contains the following topics:
•
X.21 Connections
•
X.21 Serial Cable Assembly
X.21 Connections
The X.21 interface uses a 15-pin connection for balanced circuits and is commonly used in the United
Kingdom to connect public data networks. X.21 relocates some of the logic functions to the DTE and
DCE interfaces and, as a result, requires fewer circuits and a smaller connector than EIA/TIA-232.
The network end of the X.21 adapter cable is a standard DB-15 connector. (See Figure B-13.)
X.21 cables are available as either DTE (DB-15 plug) or DCE (DB-15 receptacle).
Figure B-13 X.21 Adapter Cable Connectors, Network End
1
8
15
9
DCE
H1346a
DTE
X.21 Serial Cable Assembly
Figure B-14 shows the X.21 serial cable assembly. Table B-14 lists the DTE pinout and Table B-15 lists
the DCE pinout. Arrows indicate signal direction: —> means DTE to DCE and <— means DCE to DTE.
Figure B-14 X.21 Serial Cable Assembly
60-pin connector (J1)
34-pin connector (J2)
J2-8
J2-15
H1974
J1-46
J1-45
J1-16
J1-15
J1-1
J1-30
J1-31
J1-60
Connectors are not to scale.
J2-9
J2-1
Cisco MWR 1941-DC Mobile Wireless Edge Router Hardware Installation Guide
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Appendix B
Cable Specifications
Serial Connection Signals and Pinouts
Table B-14 X.21 DTE Cable Pinout (DB-60 to DB-15)
60-Pin
Signal Name
Type
Direction 15-Pin
Signal Name
J1-48
J1-47
GND
MODE_2
Shorting group
-
–
–
J1-51
J1-52
GND
Shorting group
MODE_DCE
–
–
–
J1-46
Shield_GND
Single
–
J2-1
Shield GND
J1-11
J1-12
TXD/RXD+
TXD/RXD–
Twisted pair no. 3
—>
—>
J2-2
J2-9
Transmit+
Transmit–
J1-9
J1-10
RTS/CTS+
RTS/CTS–
Twisted pair no. 2
—>
—>
J2-3
J2-10
Control+
Control–
J1-28
J1-27
RXD/TXD+
RXD/TXD–
Twisted pair no. 6
<—
<—
J2-4
J2-11
Receive+
Receive–
J1-1
J1-2
CTS/RTS+
CTS/RTS–
Twisted pair no. 1
<—
<—
J2-5
J2-12
Indication+
Indication–
J1-26
J1-25
RXC/TXCE+ Twisted pair no. 5
RXC/TXCE–
<—
<—
J2-6
J2-13
Timing+
Timing–
J1-15
Shield
Control_GN
D
–
–
–
J2-8
Shield
Control GND
–
Twisted pair no. 4
Table B-15 X.21 Serial DCE Cable Pinout (DB-60 to DB-15)
60 Pin
Signal Name
Type
Direction 15 Pin
Signal Name
J1-48
J1-47
GND
MODE_2
Shorting group
–
–
–
J1-46
Shield_GND
Single
–
J2-1
Shield GND
J1-28
J1-27
RXD/TXD+
RXD/TXD–
Twisted pair no. 6
<—
<—
J2-2
J2-9
Transmit+
Transmit–
J1-1
J1-2
CTS/RTS+
CTS/RTS–
Twisted pair no. 1
<—
<—
J2-3
J2-10
Control+
Control–
J1-11
J1-12
TXD/RXD+
TXD/RXD–
Twisted pair no. 3
—>
—>
J2-4
J2-11
Receive+
Receive–
J1-9
J1-10
RTS/CTS+
RTS/CTS–
Twisted pair no. 2
—>
—>
J2-5
J2-12
Indication+
Indication–
J1-24
J1-23
TXC/RXC+
TXC/RXC–
Twisted pair no. 4
—>
—>
J2-6
J2-13
Timing+
Timing–
J1-15 Control_GN
Shield D
–
Twisted pair no. 5
–
–
J2-8
Control GND
Shield –
Cisco MWR 1941-DC Mobile Wireless Edge Router Hardware Installation Guide
78-15827-06B0
B-21
Appendix B
Cable Specifications
Serial Connection Signals and Pinouts
EIA-530 Interface
This section contains the following topics:
•
EIA-530 Connections
•
EIA-530 Serial Cable Assembly
EIA-530 Connections
EIA-530, which supports balanced transmission, provides the increased functionality, speed, and
distance of EIA/TIA-449 on the smaller DB-25 connector used for EIA/TIA-232, instead of the 37-pin
connectors used for EIA/TIA-449. Like EIA/TIA-449, EIA-530 refers to the electrical specifications of
EIA/TIA-422 and EIA/TIA-423. Although the specification recommends a maximum speed of 2 Mbps,
EIA-530 is used successfully at 4 Mbps or faster speeds over short distances.
The EIA-530 adapter cable is available in DTE mode only. The network end of the EIA-530 adapter
cable is a standard DB-25 plug commonly used for EIA/TIA-232 connections. Figure B-15 shows the
DB-25 connector at the network end of the adapter cable.
DTE
H1615a
Figure B-15 EIA-530 Adapter Cable Connector, Network End
EIA-530 Serial Cable Assembly
Figure B-16 shows the EIA-530 serial cable assembly, and Table B-16 lists the pinout. Arrows indicate
signal direction: —> means DTE to DCE and <— means DCE to DTE.
The EIA-530 interface cannot be operated in DCE mode, and no DCE cable is available for it.
Figure B-16 EIA-530 Serial Cable Assembly
60-pin connector (J1)
25-pin connector (J2)
J2-13
J2-25
H1972
J1-46
J1-45
J1-16
J1-15
J1-1
J1-30
J1-31
J1-60
J2-14
J2-1
Connectors are not to scale.
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Appendix B
Cable Specifications
Serial Connection Signals and Pinouts
Table B-16 EIA-530 DTE Cable Pinout (DB-60 to DB-25)
60-Pin
Signal Name
25-Pin
Signal Name Direction
J1-11
J1-12
TXD/RXD+
TXD/RXD–
J2-2
J2-14
BA(A),
TXD+
BA(B),
TXD–
—>
—>
J1-28
J1-27
RXD/TXD+
RXD/TXD–
J2-3
J2-16
BB(A),
RXD+
BB(B),
RXD–
<—
<—
J1-9
J1-10
RTS/CTS+
RTS/CTS–
J2-4
J2-19
CA(A),
RTS+
CA(B),
RTS–
—>
—>
J1-1
J1-2
CTS/RTS+
CTS/RTS–
J2-5
J2-13
CB(A),
CTS+
CB(B),
CTS–
<—
<—
J1-3
J1-4
DSR/DTR+
DSR/DTR–
J2-6
J2-22
CC(A),
DSR+
CC(B),
DSR–
<—
<—
J1-46
J1-47
Shield_GND
MODE_2
J2-1
–
Shield
–
Shorted
J1-48
J1-49
GND
MODE_1
–
–
–
–
Shorted
J1-5
J1-6
DCD/DCD+
DCD/DCD–
J2-8
J2-10
CF(A),
DCD+
CF(B),
DCD–
<—
<—
J1-24
J1-23
TXC/RXC+
TXC/RXC–
J2-15
J2-12
DB(A),
TXC+
DB(B),
TXC–
<—
<—
J1-26
J1-25
RXC/TXCE+ J2-17
RXC/TXCE– J2-9
DD(A),
RXC+
DD(B),
RXC–
<—
<—
J1-44
J1-45
LL/DCD
J2-18
Circuit_GND J2-7
LL
Circuit_
GND
—>
–
J1-7
J1-8
DTR/DSR+
DTR/DSR–
CD(A),
DTR+
CD(B),
DTR–
—>
—>
J2-20
J2-23
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Appendix B
Cable Specifications
Smart Serial Connection Signals and Pinouts
Table B-16 EIA-530 DTE Cable Pinout (DB-60 to DB-25) (continued)
60-Pin
Signal Name
25-Pin
Signal Name Direction
J1-13
J1-14
TXCE/TXC+ J2-24
TXCE/TXC– J2-11
DA(A),
TXCE+
DA(B),
TXCE–
—>
—>
J1-51
J1-52
GND
–
MODE_DCE –
–
–
Shorted
Smart Serial Connection Signals and Pinouts
The Smart Serial cable interface supports two independent serial interface ports. Each port supports six
types of serial interfaces: EIA/TIA-232, EIA/TIA-449, X.21, V.35 in both DTE and DCE modes, and
EIA530/EIA530A in DTE mode. The serial end of the Smart Serial cable is a 26-pin connector. These
cables are used with the 2-port serial and 2-port asynchronous/synchronous WAN interface cards.
Figure B-17 shows the serial transition cables you can connect to the DB-60 port on the
asynchronous/synchronous serial modules and serial WAN interface card.
Figure B-17 Smart Serial Interface Adapter Cables
H2485
Router connections
EIA/TIA-232
EIA/TIA-449
V.35
X.21
EIA-530
Network connections at the modem or CSU/DSU
Cisco MWR 1941-DC Mobile Wireless Edge Router Hardware Installation Guide
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78-15827-06B0
Appendix B
Cable Specifications
Smart Serial Connection Signals and Pinouts
EIA/TIA-232 Smart Serial Cable Assembly
Table B-17 lists the DTE pinout and Table B-18 lists the DCE pinout for the EIA/TIA-232 Smart Serial
cable. Arrows indicate signal direction: —> means DTE to DCE and <— means DCE to DTE.
Table B-17 EIA/TIA-232 DTE Smart Serial Cable Pinout
DB-25
Direction Pin
Signal Name
Shield
—
J2-01
Shield_GND
26-Pin
Signal Name
Note
J1-23
J1-24
MODE_0
MODE_DCE
Local connections
Drain
wire
J1-05
J1-18
I_RXD/TXD+
GND+
Twisted pair no. 9
<—
—
J2-03
RXD
GND
J1-01
J1-14
O_TXD/RXD+ Twisted pair no. 5
GND+
—>
—
J2-02
TXD
GND
J1-11
J1-12
I_CTS/RTS+
I_DSR/DTR+
Twisted pair no. 2
<—
<—
J2-05
J2-06
CTS
DSR
J1-08
J1-07
O_RTS/CTS
O_DTR/DSR+
Twisted pair no. 4
—>
—>
J2-04
J2-20
RTS
DTR
J1-06
J1-19
B_DCD/DCD+ Twisted pair no. 1
GND+
<—
—
J2-08
J2-07
DCD
GND
J1-03
J1-16
B_TXC/TXC+
GND+
Twisted pair no. 7
<—
—
J2-15
TXC
GND
J1-02
J1-15
O_TXCE/RXC Twisted pair no. 6
+
GND+
—>
—
J2-24
TXCE
GND
J1-13
J1-26
B_LL/LL+
GND+
Twisted pair no. 3
—>
—
J2-18
LTST
GND
J1-04
J1-17
I_RXC/TXCE
+
GND+
Twisted pair no. 8
<—
–
J2-17
RXC
GND
Table B-18 EIA/TIA-232 DCE Smart Serial Cable Pinout
Direction
DB-25
Pin
Signal Name
Shield
—
J2-01
Shield_GND
26-Pin
Signal Name
Note
J1-23
MODE_0
Local connections
Drain
wire
J1-05
J1-18
I_RXD/TXD+
GND+
Twisted pair no. 5
<—
—
J2-02
TXD
GND
J1-01
J1-14
O_TXD/RXD+ Twisted pair no. 9
GND+
—>
—
J2-03
RXD
GND
Cisco MWR 1941-DC Mobile Wireless Edge Router Hardware Installation Guide
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Appendix B
Cable Specifications
Smart Serial Connection Signals and Pinouts
Table B-18 EIA/TIA-232 DCE Smart Serial Cable Pinout (continued)
26-Pin
Signal Name
Note
Direction
DB-25
Pin
Signal Name
J1-11
J1-12
I_CTS/RTS+
I_DSR/DTR+
Twisted pair no. 2
<—
<—
J2-04
J2-20
RTS
DTR
J1-08
J1-07
O_RTS/CTS
O_DTR/DSR+
Twisted pair no. 4
—>
—>
J2-05
J2-06
CTS
DSR
J1-06
J1-19
B_DCD/DCD+ Twisted pair no. 1
GND+
—>
—
J2-08
J2-07
DCD
GND
J1-03
J1-16
B_TXC/TXC+
GND+
Twisted pair no. 7
—>
—
J2-15
TXC
GND
J1-02
J1-15
O_TXCE/RXC Twisted pair no. 8
+
GND+
—>
—
J2-17
RXC
GND
J1-13
J1-26
B_LL/LL+
GND+
Twisted pair no. 3
<—
—
J2-18
LTST
GND
J1-04
J1-17
I_RXC/TXCE
+
GND+
Twisted pair no. 6
<—
–
J2-24
TXCE
GND
EIA/TIA-449 Smart Serial Cable Assembly
Table B-19 lists the DTE pinout and Table B-20 lists the DCE pinout for the EIA/TIA-449 Smart Serial
cable. Arrows indicate signal direction: —> means DTE to DCE and <— means DCE to DTE.
Table B-19 EIA/TIA-449 DTE Smart Serial Cable Pinout
26-Pin
Signal Name
Drain
wire
Note
DB-37
Direction Pin
Signal
Name
Shield
—
J2-01
Shield_GN
D
Twisted pair no. 2
—
—
J2-19
J2-20
SG
RC
J1-22
J1-24
MODE_I
MODE_DCE
J1-01
J1-14
O_TXD/RXD+ Twisted pair no. 5
O_TXD/RXD–
—>
—>
J2-04
J2-22
SD+
SD–
J1-03
J1-16
B_TXC/TXC+
B_TXC/TXC–
Twisted pair no. 7
<—
<—
J2-05
J2-23
ST+
ST–
J1-05
J1-18
I_RXD/TXD+
I_RXD/TXD–
Twisted pair no. 9
<—
<—
J2-06
J2-24
RD+
RD–
J1-08
J1-09
O_RTS/CTS
O_RTS/CTS–
Twisted pair no. 1
—>
—>
J2-07
J2-25
RS+
RS–
J1-04
J1-17
I_RXC/TXCE Twisted pair no. 8
+
I_RXC/TXCE–
<—
<—
J2-08
J2-26
RT+
RT–
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Appendix B
Cable Specifications
Smart Serial Connection Signals and Pinouts
Table B-19 EIA/TIA-449 DTE Smart Serial Cable Pinout (continued)
DB-37
Direction Pin
Signal
Name
Twisted pair no. 4
<—
<—
J2-09
J2-27
CS+
CS–
B_LL/LL+
GND+
Twisted pair no. 12
—>
—
J2-10
J2-37
LL
SC
J1-12
J1-25
I_DTR/DSR+
I_DTR/DSR–
Twisted pair no. 10
<—
<—
J2-11
J2-29
DM+
DM–
J1-07
J1-20
O_DTR/DSR+
O_DTR/DSR–
Twisted pair no. 3
—>
—>
J2-12
J2-30
TR+
TR–
J1-02
J1-15
O_TXCE/RXC Twisted pair no. 6
+
O_TXCE/RXC
–
—>
—>
J2-17
J2-35
TT+
TT–
J1-06
J1-19
B_DCD/DCD+ Twisted pair no. 11
B_DCD/DCD–
<—
<—
J2-13
J2-31
RR+
RR–
26-Pin
Signal Name
Note
J1-11
J1-10
I_CTS/RTS+
I_CTS/RTS–
J1-13
J1-26
Table B-20 EIA/TIA-449 DCE Smart Serial Cable Pinout
26-Pin
Signal Name
Drain
wire
Note
DB-37
Direction Pin
Signal
Name
Shield
—
J2-01
Shield_GN
D
J1-22
MODE_I
Twisted pair no. 2
—
Not used
J2-19
J2-20
SG
RC
J1-05
J1-18
I_RXD/TXD+
I_RXD/TXD–
Twisted pair no. 5
<—
<—
J2-04
J2-22
SD+
SD–
J1-03
J1-16
B_TXC/TXC+
B_TXC/TXC–
Twisted pair no. 7
—>
—>
J2-05
J2-23
ST+
ST–
J1-01
J1-14
O_TXD/RXD+ Twisted pair no. 9
O_TXD/RXD–
—>
—>
J2-06
J2-24
RD+
RD–
J1-11
J1-10
I_CTS/RTS+
I_CTS/RTS–
Twisted pair no. 1
<—
<—
J2-07
J2-25
RS+
RS–
J1-02
J1-15
O_TXCE/RXC Twisted pair no. 8
+
O_TXCE/RXC
–
—>
—>
J2-08
J2-26
RT+
RT–
J1-08
J1-09
O_RTS/CTS
O_RTS/CTS–
—>
—>
J2-09
J2-27
CS+
CS–
J1-06
J1-19
B_DCD/DCD+ Twisted pair no. 11
B_DCD/DCD–
—>
—>
J2-13
J2-31
RR+
RR–
J1-07
J1-20
O_DTR/DSR+
O_DTR/DSR–
—>
—>
J2-11
J2-29
DM+
DM–
Twisted pair no. 4
Twisted pair no. 10
Cisco MWR 1941-DC Mobile Wireless Edge Router Hardware Installation Guide
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Appendix B
Cable Specifications
Smart Serial Connection Signals and Pinouts
Table B-20 EIA/TIA-449 DCE Smart Serial Cable Pinout (continued)
DB-37
Direction Pin
Signal
Name
Twisted pair no. 3
<—
<—
J2-12
J2-30
TR+
TR–
Twisted pair no. 12
—>
—
J2-10
J2-37
LL
SC
<—
<—
J2-17
J2-35
TT+
TT–
26-Pin
Signal Name
Note
J1-12
J1-25
I_DTR/DSR+
I_DTR/DSR–
J1-13
J1-26
B_LL/LL+
GND+
J1-04
J1-17
I_RXC/TXCE Twisted pair no. 6
+
I_RXC/TXCE–
X.21 Smart Serial Cable Assembly
Table B-21lists the DTE pinout and Table B-22 lists the DCE pinout for the X.21 Smart Serial cable.
Arrows indicate signal direction: —> means DTE to DCE and <— means DCE to DTE.
Table B-21 X.21 DTE Smart Serial Cable Pinout
DB-15
Direction Pin
Signal Name
Shield
—
J2-01
Shield_GND
26-Pin
Signal Name
Note
J1-21
J1-24
MODE_2
MODE_DCE
Local connections
Drain
wire
J1-05
J1-18
I_RXD/TXD+
I_RXD/TXD–
Twisted pair no. 8
<—
<—
J2-04
J2-11
RECEIVE+
RECEIVE–
J1-01
J1-14
O_TXD/RXD+ Twisted pair no. 5
O_TXD/RXD–
—>
—>
J2-03
J2-09
TRANSMIT+
TRANSMIT–
J1-11
J1-10
I_CTS/RTS+
I_DSR/DTR+
Twisted pair no. 2
<—
<—
J2-05
J2-12
INDICATION
+
INDICATION
–
J1-08
J1-09
O_RTS/CTS
O_DTR/DSR+
Twisted pair no. 3
—>
—>
J2-03
J2-10
CONTROL+
CONTROL–
J1-26
GND+
Not used
Twisted pair no. 1
—
J2-08
CCT GND
Not used
J1-04
J1-17
I_RXC/TXCE Twisted pair no. 7
+
I_RXC/TXCE–
<—
<—
J2-06
J2-13
TIMING+
TIMING–
Not used
Twisted pair no. 4
Not used
Not used
Twisted pair no. 6
Not used
Not used
Twisted pair no. 9
Not used
Cisco MWR 1941-DC Mobile Wireless Edge Router Hardware Installation Guide
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Appendix B
Cable Specifications
Smart Serial Connection Signals and Pinouts
Table B-22 X.21 DCE Smart Serial Cable Pinout
DB-15
Direction Pin
Signal Name
Shield
—
J2-01
Shield_GND
26-Pin
Signal Name
Note
J1-21
MODE_2
Local connections
Drain
wire
J1-05
J1-18
I_RXD/TXD+
I_RXD/TXD–
Twisted pair no. 5
<—
<—
J2-02
J2-09
TRANSMIT+
TRANSMIT–
J1-01
J1-14
O_TXD/RXD+ Twisted pair no. 8
O_TXD/RXD–
—>
—>
J2-04
J2-11
RECEIVE+
RECEIVE–
J1-11
J1-10
I_CTS/RTS+
I_DSR/DTR+
Twisted pair no. 3
<—
<—
J2-03
J2-10
CONTROL+
CONTROL–
J1-08
J1-09
O_RTS/CTS
O_DTR/DSR+
Twisted pair no. 2
—>
—>
J2-05
J2-12
INDICATION
+
INDICATION
–
J1-02
J1-15
O_TXCE/RXC Twisted pair no. 7
+
O_TXCE/RXC
+
—>
—>
J2-06
J2-13
TIMING+
TIMING–
J1-26
GND
Not used
Twisted pair no. 1
—
J2-08
CCT GND
Not used
Not used
Twisted pair no. 4
Not used
Not used
Twisted pair no. 6
Not used
Not used
Twisted pair no. 9
Not used
V.35 Smart Serial Cable Assembly
Table B-23 lists the DTE pinout and Table B-24 lists the DCE pinout for the V.35 Smart Serial cable.
Arrows indicate signal direction: —> means DTE to DCE and <— means DCE to DTE.
Table B-23 V.35 DTE Smart Serial Cable Pinout
26-Pin
Signal Name
Note
J1-22
J1-23
J1-24
MODE_1
MODE_0
MODE_DCE
Local connections
Drain
wire
Shield
V.35
Direction Pin
Signal Name
—
J2-A
Shield_GND
J1-06
J1-19
B_DCD/DCD+ Twisted pair no. 1
GND+
<—
—
J2-F
RLSD
GND
J1-13
J1-26
B_LL/LL+
GND
—>
—
J2-K
J2-B
LT
GND
Twisted pair no. 3
Cisco MWR 1941-DC Mobile Wireless Edge Router Hardware Installation Guide
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Appendix B
Cable Specifications
Smart Serial Connection Signals and Pinouts
Table B-23 V.35 DTE Smart Serial Cable Pinout (continued)
V.35
Direction Pin
Signal Name
Twisted pair no. 9
<—
<—
J2-R
J2-T
RD+
RD–
J1-01
J1-14
O_TXD/RXD+ Twisted pair no. 5
O_TXD/RXD–
—>
—>
J2-P
J2-S
SD+
SD–
J1-11
J1-12
I_CTS/RTS+
I_DSR/DTR+
Twisted pair no. 2
<—
<—
J2-D
J2-E
CTS
DSR
J1-08
J1-07
O_RTS/CTS
O_DTR/DSR+
Twisted pair no. 4
—>
—>
J2-C
J2-H
RTS
DTR
J1-04
J1-17
I_RXC/TXCE Twisted pair no. 8
+
I_RXC/TXCE–
<—
<—
J2-V
J2-X
SCR+
SCR–
J1-02
J1-15
O_TCXE/RXC Twisted pair no. 6
+
0_TXCE/RXC
–
—>
—>
J2-U
J2-W
SCTE+
SCTE–
J1-03
J1-16
B_TXC/TXC+
B_TXC/TXC–
<—
<—
J2-Y
SCT+
J2-AA SCT–
26-Pin
Signal Name
Note
J1-05
J1-18
I_RXD/TXD+
I_RXD/TXD–
Twisted pair no. 7
Table B-24 V.35 DCE Smart Serial Cable Pinout
26-Pin
Signal Name
Note
J1-22
J1-23
MODE_1
MODE_0
Local connections
Drain
wire
Shield
V.35
Direction Pin
Signal Name
—
J2-A
Shield_GND
J1-06
J1-19
B_DCD/DCD+ Twisted pair no. 1
GND+
—>
—
J2-F
RLSD
GND
J1-13
J1-26
B_LL/LL+
GND
Twisted pair no. 3
—>
—
J2-K
J2-B
LT
GND
J1-05
J1-18
I_RXD/TXD+
I_RXD/TXD–
Twisted pair no. 5
<—
<—
J2-P
J2-S
SD+
SD–
J1-01
J1-14
O_TXD/RXD+ Twisted pair no. 9
O_TXD/RXD–
—>
—>
J2-R
J2-T
RD+
RD–
J1-11
J1-12
I_CTS/RTS+
I_DSR/DTR+
Twisted pair no. 4
<—
<—
J2-C
J2-H
RTS
DSR
J1-08
J1-07
O_RTS/CTS
O_DTR/DSR+
Twisted pair no. 2
—>
—>
J2-D
J2-E
CTS
DSR
J1-04
J1-17
I_RXC/TXCE Twisted pair no. 6
+
I_RXC/TXCE–
<—
<—
J2-U
J2-W
SCTE+
SCTE–
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78-15827-06B0
Appendix B
Cable Specifications
Smart Serial Connection Signals and Pinouts
Table B-24 V.35 DCE Smart Serial Cable Pinout (continued)
V.35
Direction Pin
Signal Name
O_TCXE/RXC Twisted pair no. 8
+
0_TXCE/RXC
–
—>
—>
J2-V
J2-X
SCR+
SCR–
B_TXC/TXC+
B_TXC/TXC–
—>
—>
J2-Y
SCT+
J2-AA SCT–
26-Pin
Signal Name
J1-02
J1-15
J1-03
J1-16
Note
Twisted pair no. 7
EIA-530 Smart Serial Cable Assembly
Table B-25 lists the DTE pinout and Table B-26 lists the DCE pinout for the EIA-530 Smart Serial cable.
Arrows indicate signal direction: —> means DTE to DCE and <— means DCE to DTE.
Table B-25 EIA-530 DTE Smart Serial Cable Pinout
26-Pin
Signal Name
Note
J1-21
J1-23
J1-24
MODE_2
MODE_0
MODE_DCE
Local connections
Drain
wire
Shield
DB-25
Direction Pin
Signal Name
—
J2-01
Shield_GND
J1-06
J1-19
B_DCD/DCD+ Twisted pair no. 11
B_DCD/DCD–
<—
<—
J2-08
j2-10
CF(A); DCD+
CF(B); DCD–
J1-13
J1-26
B_LL/LL+
GND
Twisted pair no. 12
—>
—
J2-18
J2-07
LL
GND
J1-05
J1-18
I_RXD/TXD+
I_RXD/TXD–
Twisted pair no. 9
<—
<—
J2-03
J2-16
BB(A); RXD+
BB(B); RXD–
J1-01
J1-14
O_TXD/RXD+ Twisted pair no. 5
O_TXD/RXD–
—>
—>
J2-02
J2-14
BA(A); TXD+
BA(B); TXD–
J1-11
J1-10
I_CTS/RTS+
I_DSR/RTS–
Twisted pair no. 4
<—
<—
J2-05
J2-13
CB(A); CTS+
CB(B); CTS–
J1-03
J1-16
B_TXC/TXC+
B_TXC/TXC–
Twisted pair no. 7
<—
<—
J2-15
J2-12
DB(A); TXC+
DB(B); TXC–
J1-12
J1-25
I_DSR/DTR+
I_DSR/DTR–
Twisted pair no. 10
<—
<—
J2-06
J2-22
CC(A); DSR+
CC(B); DSR–
J1-08
J1-09
O_RTS/CTS
O_RTS/CTS–
Twisted pair no. 1
—>
—>
J2-04
J2-19
CA(A); RTS+
CA(B); RTS–
J1-04
J1-17
I_RXC/TXCE Twisted pair no. 8
+
I_RXC/TXCE–
<—
<—
J2-17
J2-09
DD(A); RXC+
DD(B); RXC–
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B-31
Appendix B
Cable Specifications
Smart Serial Connection Signals and Pinouts
Table B-25 EIA-530 DTE Smart Serial Cable Pinout (continued)
Note
DB-25
Direction Pin
26-Pin
Signal Name
Signal Name
J1-02
J1-15
O_TCXE/RXC Twisted pair no. 6
+
0_TXCE/RXC
–
—>
—>
J2-24
J2-11
DB(A);
TXCE+
DB(B);
TXCE–
J1-03
J1-16
B_TXC/TXC+
B_TXC/TXC–
Twisted pair no. 7
<—
<—
J2-15
J2-12
DB(A); TXC+
DB(B); TXC–
J1-07
J1-20
O_DTR/DSR+
O_DTR/DSR–
Twisted pair no. 3
—>
—>
J2-20
J2-23
CD(A); DTR+
CD(B); DTR–
Not used
Twisted pair no. 2
Not used
Table B-26 RS-530A DCE Smart Serial Cable Pinout
26-Pin
Signal Name
Note
J1-21
J1-22
J1-24
MODE_2
MODE_1
MODE_DCE
Local connections
Drain
wire
Shield
DB-25
Direction Pin
Signal Name
—
J2-01
Shield_GND
J1-06
J1-19
B_DCD/DCD+ Twisted pair no. 11
B_DCD/DCD–
<—
<—
J2-08
j2-10
CF(A); DCD+
CF(B); DCD–
J1-13
J1-26
B_LL/LL+
GND
Twisted pair no. 12
—>
—
J2-18
J2-07
LL
AB; GND
J1-05
J1-18
I_RXD/TXD+
I_RXD/TXD–
Twisted pair no. 9
<—
<—
J2-03
J2-16
BB(A); RXD+
BB(B); RXD–
J1-01
J1-14
O_TXD/RXD+ Twisted pair no. 5
O_TXD/RXD–
—>
—>
J2-02
J2-14
BA(A); TXD+
BA(B); TXD–
J1-11
J1-10
I_CTS/RTS+
I_DSR/RTS–
Twisted pair no. 4
<—
<—
J2-05
J2-13
CB(A); CTS+
CB(B); CTS–
J1-12
J1-25
I_DSR/DTR+
GND
Twisted pair no. 10
<—
—
J2-06
CC(A); DSR+
AC; GND
J1-03
J1-16
B_TXC/TXC+
B_TXC/TXC–
Twisted pair no. 7
<—
<—
J2-15
J2-12
DB(A); TXC+
DB(B);
TXCS–
J1-08
J1-09
O_RTS/CTS
O_RTS/CTS–
Twisted pair no. 1
—>
—>
J2-04
J2-19
CA(A); RTS+
CA(B); RTS–
J1-04
J1-17
I_RXC/TXCE Twisted pair no. 8
+
I_RXC/TXCE–
<—
<—
J2-17
J2-09
DD(A); RXC+
DD(B); RXC–
Cisco MWR 1941-DC Mobile Wireless Edge Router Hardware Installation Guide
B-32
78-15827-06B0
Appendix B
Cable Specifications
Smart Serial Connection Signals and Pinouts
Table B-26 RS-530A DCE Smart Serial Cable Pinout (continued)
Note
DB-25
Direction Pin
26-Pin
Signal Name
J1-02
J1-15
O_TCXE/RXC Twisted pair no. 6
+
0_TXCE/RXC
–
—>
—>
J2-24
J2-11
DB(A);
TXCE+
DB(B);
TXCE–
J1-03
J1-16
B_TXC/TXC+
B_TXC/TXC–
Twisted pair no. 7
<—
<—
J2-15
J2-12
DB(A); TXC+
DB(B); TXC––
J1-07
J1-20
O_DTR/DSR+
GND+
Not used
Twisted pair no. 3
—>
—
J2-20
J2-23
CD(A); DTR+
AC; GND
Not used
Twisted pair no. 2
Signal Name
Cisco MWR 1941-DC Mobile Wireless Edge Router Hardware Installation Guide
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B-33
Appendix B
Cable Specifications
Smart Serial Connection Signals and Pinouts
Cisco MWR 1941-DC Mobile Wireless Edge Router Hardware Installation Guide
B-34
78-15827-06B0
INDEX
Numerics
C
2-port T1/E1 VWIC
cable
connecting
3-6
assemblies
description
1-5
pinouts
pinout specifications
adapter
3-7
A
EIA/TIA-232, four-port
B-12
EIA/TIA-449, four-port
B-15
2-11
V.35
B-23
B-5, B-6
B-18
X.21, four-port
vii
B-21
cable pinouts
auxiliary port
adapter pinouts
connecting
roll-over
B-5, B-6
asynchronous serial baud rates
Ethernet
B-6
10BaseT
3-5
connections
AUI
2-7, 3-5
considerations
pinouts
B-5, B-6
EIA-530, four-port
adapter pinouts
audience
B-5
B-9
B-8
chassis, dimensions
2-6
checklist, installation
B-5, B-6
1-9
2-6
Cisco Information Packet publication
2-5
compact flash
B
back panel
1-4
1-7
formatting
3-15
replacing or upgrading
baud rate
asynchronous serial
description
3-13
2-11
Cisco MWR 1941-DC Mobile Wireless Edge Router Hardware Installation Guide
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IN-1
Index
connecting
E
auxiliary port
3-5
console port
EIA/TIA-232
3-3
fast ethernet interface cables
modem
considerations
3-5
EIA/TIA-449
3-3
network cables
power supply
cable pinouts
3-5
four-port
3-10
VWIC interface cables
B-15
connections
3-6
B-12
considerations
connections
asynchronous/synchronous serial
2-9
cable pinouts
DTE
2-9
considerations
2-8
network
2-8
serial
B-14
EIA-530
2-11
DCE
Ethernet
B-12
B-22
B-22
equipment
for installation
racks
2-9, B-24
serial interface adapter cables (figure)
B-24
2-4
2-3
Ethernet cable types
2-8
console port
adapter
B-6
connections
considerations
pinouts
F
2-7, 3-3, 3-4
fast ethernet
2-6
connecting interface cables
B-6
conventions, documentation
viii
interfaces, description
formatting compact flash
3-5
1-5
3-15
four-port
D
serial module pinouts
DCE connections
2-9
dimensions, chassis
1-4
1-9
documentation
G
conventions
viii
organization
viii
DTE connections
front panel
B-12 to B-23
general site requirements
2-3
2-9
Cisco MWR 1941-DC Mobile Wireless Edge Router Hardware Installation Guide
IN-2
78-15827-06B0
Index
H
M
hardware
modules
features
VWIC
1-4
installing
1-5
3-1
troubleshooting procedures
A-1
N
network cables, connecting
I
network connections
installation
checklist
network modules
NM-16A
2-6
compact flash
hardware
3-14
3-1
rack-mounting
3-2
tools required
interface cards
2-4
VWIC-2MFT-T1/E1-DIR
WIC-2A/S
1-6
interface numbering
1-9
interface pinouts
1-7
NM-1T3/E3
1-7
NM-4A/S
1-7
NM-8A/S
1-7
NM-16ESW
1-7
NM-1T3/E3
1-7
NM-4A/S
1-7
1-7
B-12
NM-8A/S
EIA/TIA-449, four-port
B-15
NM-AIC-64
V.35
1-7
B-23
B-18
X.21, four-port
1-7
1-7
EIA/TIA-232, four-port
EIA-530, four-port
1-7
NM-16ESW
NM-16A
1-5
2-8
1-7
NM-AIC-64
1-5
3-5
B-21, B-25, B-26, B-27, B-28, B-29, B-30,
B-31, B-32
P
packing list
interfaces
2-5
pinouts
fast ethernet, description
VWIC, description
1-5
digital voice port
1-5
IP-RAN, using the MWR 1941-DC
B-10
EIA/TIA-232
1-1
four-port
B-12
EIA/TIA-449
four-port
L
B-15
EIA-530
LAN
four-port
interface types
LEDs, front panel
log, site
2-8
B-23
EIA-TIA-232, four-port
B-12
A-4
2-5
Cisco MWR 1941-DC Mobile Wireless Edge Router Hardware Installation Guide
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IN-3
Index
Ethernet
S
10BaseT
AUI
B-9
safety
B-8
serial cable
B-11, B-23
information
T1/E1 port
B-10
overview
V.35
1-11
ix
recommendations
B-18
2-1
serial
X.21
four-port
cables, pinouts
B-21
serial connections, considerations
pinout specifications
VWIC
serial port specifications
3-7
powering on
B-11, B-23
2-10
signal descriptions
3-13
serial
power supply
B-22
connecting
3-10
site log, record keeping
description
1-8
Slot
warnings
2-6
1-10
specifications
3-12
serial ports
problem solving
2-10
specifications, system
See troubleshooting
1-9
system installation procedures
system specifications
R
rack-mounting
brackets
1-9
T
T1/E1 digital voice port
2-3
instructions
pinouts
3-2
record keeping, site log
2-6
B-10
Tables
1-2
regulatory compliance
DTE and DCE devices
1-11
removing compact flash
3-14
replacing compact flash
3-13
RJ-45, cable pinouts
serial signal transmission specifications
tools required for installation
cables
rollover cable, identifying
1-4
2-9
2-10
2-4
troubleshooting
B-8
3-7
router features
B-10
T1/E1 trunk port
pinouts
redundancy
RJ-48C
3-4
3-2
equipment
purpose
2-9
3-3, 3-4, B-7
A-3
connections
A-3
cooling system
A-2
front panel LEDs
modules
A-4
A-3
power system
A-2
Cisco MWR 1941-DC Mobile Wireless Edge Router Hardware Installation Guide
IN-4
78-15827-06B0
Index
U
upgrading compact flash
3-13
V
V.35
considerations
B-17
V.35 cable pinouts
ventilation
B-18
2-3
Voice/WAN interface cards
1-5
VWIC-2MFT-T1/E1-DIR
1-5
WIC-2A/S
1-6
VWIC
See 2-port T1/E1 VWIC
W
warning
DC power connection
exposed wires
grounding
3-13
3-12
3-13
power supply
3-13
secure cabling
short circuit
3-12
3-12
Warnings
SELV circuit
2-8
warnings
safety overview
ix
X
X.21
cable pinouts
four-port
B-21
considerations
B-20
Cisco MWR 1941-DC Mobile Wireless Edge Router Hardware Installation Guide
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IN-5
Index
Cisco MWR 1941-DC Mobile Wireless Edge Router Hardware Installation Guide
IN-6
78-15827-06B0