Cisco MWR 1941-DC - 1941 Mobile Wireless Router, MWR-1941-DC-2T1 - MWR 1941 Mobile Wireless Edge Router, MWR 1941-DC Hardware Installation Manual

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Cisco Systems, Inc. 170 West Tasman Drive San Jose, CA 95134-1706 USA http://www.cisco.com Tel: 408 526-4000

800 553-NETS (6387)

Fax: 408 526-4100

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

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.

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

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

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

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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)

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CONTENTS

About This Guide vii

Objectives vii

Audience vii

Organization viii

Conventions viii

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

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.

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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 bug-doc@cisco.com.

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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About This Guide

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:

• Emergencies— security-alert@cisco.com

• Nonemergencies— psirt@cisco.com

Tip 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 Too l s & Re s ou r c es 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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About This Guide

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

• Pack et 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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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

CHA P TER

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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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Chapter 1 Overview of the Cisco MWR 1941-DC Router

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

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).

Active

pBTS

MWR 1900 IP BTS router pair

100BaseT

T1/E1 backhaul link to

IP RAN aggregation node

Standby

65827

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Chapter 1 Overview of the Cisco MWR 1941-DC Router

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

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.

Network Operations

Center

BTS Node B

DCN traffic

10/100 Base-T

T1/E1

MWR 1941-DC, 7200, 1/0 DACS

BSC/RNC

Voice circuits

T1/E1

Cisco MWR

1941-DC

Drop

and

Insert

T1/E1

10/100 Base-T

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

RS-232

101070

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Chapter 1 Overview of the Cisco MWR 1941-DC Router

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:

• 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).

Figure 1-3 Front Panel of the Cisco MWR 1941-DC Router

Figure 1-4 Back Panel of the Cisco MWR 1941-DC Router

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)

98716

L B

T A

X D

/ L

X D

/ L

R X

T X

SERIAL A/S

Serial 0/3

Serial 0/2

Serial 0/1

Serial 0/0

Serial 1/3

Serial 1/2

Serial 1/1

Serial 1/0

FE1

FE0

Console

port

Auxiliary

port

Power

connector

Fan

Rack mount bracket

(both sides)

Grounding

nut/screw

65784

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Chapter 1 Overview of the Cisco MWR 1941-DC Router

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):

• 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(=)

Note 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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Chapter 1 Overview of the Cisco MWR 1941-DC Router

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

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

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.

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 1-1 Cisco MWR 1941-DC Power Supply Specifications

Specification +27/-48 VDC

Input voltage, DC power supply

Maximum input current

Note If the input voltage drops

below 18.5 VCD, the router will go into shut down mode.

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

3.5A

Wire gauge for DC-input power connections

18 AWG

Power Dissipation 70 W (maximum) 35 W (typical)

Table 1-2 Power Supply Connectors Pinout—+27 VDC Application

PIN +27 VDC Power Source

1+27 VDC

2Ground

3RTN

Table 1-3 Power Supply Connectors Pinout—-48 VDC Application

PIN -48 VDC Power Source

1RTN

2Ground

3-48 VDC

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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.

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

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. 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

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

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Cisco MWR 1941-DC Router Interface Numbering

Figure 1-5 Cisco MWR 1941-DC Router Port Numbers

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.

98716

L B

T A

/ L

X D

/ L

X D

/ L

R X

T X

SERIAL A/S

Serial 0/3

Serial 0/2

Serial 0/1

Serial 0/0

Serial 1/3

Serial 1/2

Serial 1/1

Serial 1/0

FE1

FE0

Console

port

Auxiliary

port

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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

CHA P TER

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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:

• 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.

Warning

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

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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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