Cisco VWIC-2MFT-T1 - Multiflex Trunk Voice/WAN Interface Card Expansion... User manual

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VWIC-2MFT-T1-DIR, VWIC-2MFT-E1-DIR
Installation Instructions
This document contains the following sections:
•Overview
•Safety Guidelines
•Installing the VWIC-2MFT-T1-DIR, VWIC-2MFT-E1-DIR
•Connecting the T1/E1 Multiflex VWIC Card
•Configuring the VWIC-2MFT-T1-DIR, VWIC-2MFT-E1-DIR
•Y-Cable Specifications
•RJ-48C Pinout Configuration
•Understanding the LEDs
•Translated Safety Warnings
•Obtaining Documentation
•Obtaining Technical Assistance
Overview
The Cisco VWIC-2MFT-T1-DIR and VWIC-2MFT-E1-DIR Voice/WAN Interface Cards 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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Each card also features protection switch solid state relays on the line interfaces, which together with
redundancy logic and relay control added in a Cisco IOS feature set on the MWR 1941-DC router, can
be used to provide T1/E1 Protection Switching between redundant routers in applicable
implementations.
Note For information on the Cisco MWR 1941-DC router implementations and Cisco IOS software available
for those implementations, see the Cisco MWR 1941-DC Mobile Wireless Edge Router Software
Configuration Guide.
The Cisco MWR 1941-DC router provides three WAN interface slots, which allows support for 6
T1/E1s.
Physical Characteristics of the VWIC-2MFT-T1-DIR, VWIC-2MFT-E1-DIR
Each T1/E1 Multiflex VWIC provides two RJ-48C interfaces. You can distinguish between T1 and E1
Drop and Insert interface cards by the labeling on the faceplate, as shown in Figure 1 and Figure 2.
Figure 1 2-Port T1 Multiflex Trunk Interface Card with Drop and Insert and Relays
(VWIC-2MFT-T1-DIR) Front Panel
Figure 2 2-Port E1 Multiflex Trunk Interface Card with Drop and Insert and Relays
(VWIC-2MFT-E1-DIR) Front Panel
Note The labeling under the port and on the lower left of the card indicates whether it is a T1 or E1 card. Also,
due to limited space, the last dash was omitted from the label on the card (VWIC-2MFT-E1DIR and
VWIC-2MFT-T1DIR).
For information about the LEDs on the T1/E1 Multiflex VWIC, see Understanding the LEDs, page 12.
For information about the pinout configuration for the RJ-48C connectors, see RJ-48C Pinout
Configuration, page 11.
65781
VWIC
2MFT-T1DIR
AL
LP
CD
CTRLR T1 1 CTRLR T1 0
RJ-48C ports
SEE
MANUAL
BEFORE
INSTALLATION
65782
VWIC
2MFT-E1DIR
AL
LP
CD
CTRLR E1 1 CTRLR E1 0
RJ-48C ports
SEE
MANUAL
BEFORE
INSTALLATION

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Safety Guidelines
This section provides safety guidelines that you should follow when working with any equipment that
connects to electrical power or telephone wiring.
Safety Warnings
Safety warnings appear throughout this publication in procedures that, if performed incorrectly, might
harm you. A warning symbol precedes each warning statement.
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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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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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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Electrical Equipment Guidelines
Follow these basic guidelines when working with any electrical equipment:
•Before beginning any procedures requiring access to the chassis interior, locate the emergency
power-off switch for the room in which you are working.
•Disconnect all power and external cables before moving a chassis.
•Do not work alone when potentially hazardous conditions exist.
•Never assume that power has been disconnected from a circuit; always check.
•Do not perform any action that creates a potential hazard to people or makes the equipment unsafe;
carefully examine your work area for possible hazards such as moist floors, ungrounded power
extension cables, and missing safety grounds.
Telephone Wiring Guidelines
Use the following guidelines when working with any equipment that is connected to telephone wiring or
to other network cabling:
•Never install telephone wiring during a lightning storm.
•Never install telephone jacks in wet locations unless the jack is specifically designed for wet
locations.
•Never touch uninsulated telephone wires or terminals unless the telephone line has been
disconnected at the network interface.
•Use caution when installing or modifying telephone lines.
Preventing Electrostatic Discharge Damage
Electrostatic discharge (ESD) damage, which can occur when electronic cards or components are
improperly handled, results in complete or intermittent failures. Port adapters and processor modules
comprise printed circuit boards that are fixed in metal carriers. Electromagnetic interference (EMI)
shielding and connectors are integral components of the carrier. Although the metal carrier helps to
protect the board from ESD, use a preventive antistatic strap during handling.
Following are guidelines for preventing ESD damage:
•Always use an ESD wrist or ankle strap and ensure that it makes good skin contact.
•Connect the equipment end of the strap to an unfinished chassis surface.
•When installing a component, use any available ejector levers or captive installation screws to
properly seat the bus connectors in the backplane or midplane. These devices prevent accidental
removal, provide proper grounding for the system, and help to ensure that bus connectors are
properly seated.
•When removing a component, use any available ejector levers or captive installation screws to
release the bus connectors from the backplane or midplane.
•Handle carriers by available handles or edges only; avoid touching the printed circuit boards or
connectors.

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•Place a removed board component-side-up on an antistatic surface or in a static shielding container.
If you plan to return the component to the factory, immediately place it in a static shielding
container.
•Avoid contact between the printed circuit boards and clothing. The wrist strap only protects
components from ESD voltages on the body; ESD voltages on clothing can still cause damage.
•Never attempt to remove the printed circuit board from the metal carrier.
Caution For safety, periodically check the resistance value of the antistatic strap. The measurement should be
between 1 and 10 megohms (Mohms).
FCC Class A Compliance
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.
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.)
Installing the VWIC-2MFT-T1-DIR, VWIC-2MFT-E1-DIR
In addition to the T1/E1 Multiflex VWIC and the Cisco MWR 1941-DC router, you need the following
items to install and connect your card:
•Number 2 Phillips screwdriver
•ESD-preventive wrist strap
•Appropriate connecting cable
You can install T1/E1 Multiflex VWICs either before or after mounting the router, whichever is more
convenient.
Caution T1/E1 Multiflex VWICs do not support online insertion and removal (hot swapping). Before inserting a
card into the network module or router chassis, you must turn off electrical power and disconnect
network cables.

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To install a T1/E1 Multiflex VWIC, follow this procedure:
Step 1 Power off the router by turning OFF the DC power source at the circuit breaker and taping the circuit
breaker into the OFF position. To channel ESD voltages to the ground, do not remove the wire from the
ground lug.
Warning Before performing any of the following procedures, ensure that power is removed from the DC circuit.
To ensure that all power is OFF, locate the circuit breaker on the panel board that services the DC
circuit, switch the circuit breaker to the OFF position, and tape the switch handle of the circuit
breaker in the OFF position.
Step 2 Remove all network interface cables, including telephone cables, from the front panel.
Step 3 Use either a number 2 Phillips screwdriver or a small flat-blade screwdriver to remove the blank filler
panel from the network module slot where you plan to install the card. Save the filler panel for future use.
Step 4 Align the card with the guides in the two-slot network module and slide it gently into the slot.
Step 5 Push the card into place until you feel its edge connector mate securely with the connector.
Step 6 Fasten the card’s captive mounting screws into the holes in the network module faceplate using the
Phillips or flat-blade screwdriver.
Step 7 If the router was previously running, reinstall the network interface cables and turn on power to 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.
Connecting the T1/E1 Multiflex VWIC Card
How you connect the ports of the T1/E1 Multiflex VWIC depends on whether you are using the
Cisco MWR 1941-DC router in a redundant or a non-redundant configuration.
Whether you are using the Cisco MWR 1941-DC router in a redundant or non-redundant configuration
depends on the implementation of the router. For information on MWR 1941-DC router
implementations, see the Cisco MWR 1941-DC Mobile Wireless Edge Router Software
Configuration Guide.
For redundant configurations, use a Y-cable (as described in Y-Cable Specifications, page 10).
Note HSRP must be configured for redundancy to allow one router to become active (CD LED on) and the
other to become the standby (AL LED on due to no framing).
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.

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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 card’s internal DSU/CSU is communicating with
the DSU/CSU 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 Mobile Wireless Edge Router Software Configuration Guide.”
Step 1 Confirm that the router is turned off.
Step 2 Connect one end of the cable to the T1 or E1 port on the card.
Step 3 Connect the other end to the BTS patch or demarcation panel at your site.
Step 4 Turn on power to the router.
Step 5 Check that the CD LED goes on, which means that the card’s internal DSU/CSU is communicating with
the DSU/CSU at the T1 or E1 service provider central office.
Configuring the VWIC-2MFT-T1-DIR, VWIC-2MFT-E1-DIR
For information about configuring the T1/E1 Multiflex VWICs, see the “Cisco MWR 1941-DC Mobile
Wireless Edge Router Software Configuration Guide.”
Y-Cable Specifications
Depending on the Cisco MWR 1941-DC router implementation, the T1/E1 Multiflex VWIC can be used
in a standalone router or in redundant Cisco MWR 1941-DC router configurations. For redundant
configurations, a special Y-cable is required to connect 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.
•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).
•The cable length from junction point to the patch panel is determined by the customer.