Cisco 1605-R Operating instructions

About This Guide vii
About This Guide
This preface discusses the objectives, audience, organization, and conventions of this
hardware installation guide. This preface also provides general information about Cisco
documentation. Sections in this preface are:
•Objectives on page vii
•How to Use This Guide on page viii
•Audience on page viii
•Organization on page ix
•Conventions on page ix
•Obtaining Service and Support on page xii
•Cisco Connection Online on page xii
•Ordering Documentation on page xiv
Objectives
This publication provides hardware installation information for Cisco WAN and voice
interface cards used in Cisco 3600 series, 2600 series, 1600 series, and Cisco 1720 modular
routers (herein referred to as Cisco modular routers).
This publication also provides minimum software configuration information for
configuring WAN interface cards, but this is not meant as comprehensive router
configuration instructions. For detailed software configuration information, refer to the
Cisco IOS configuration guide and command reference publications. These publications
are available on the Documentation CD-ROM that came with your router or you can order
printed copies. (See the “Ordering Documentation” section on page xiv.)

How to Use This Guide
Cisco WAN Interface Cards Hardware Installation Guide
viii
Note This publication describes a variety of router models that are similar in functionality,
but differ in the number of interfaces supported. Some information provided might not
apply to your particular router model.
How to Use This Guide
•Use Table 1-1 in Chapter 1, “Overview of Cisco WAN and Voice Interface Cards” to
identify the WAN and voice interface cards compatible with Cisco 3600 series routers
and their required release of Cisco IOS software.
•Use Table 1-2 in Chapter 1, “Overview of Cisco WAN and Voice Interface Cards” to
identify the WAN and voice interface cards compatible with Cisco 2600 series routers
and their required release of Cisco IOS software.
•Use Table 1-3 in Chapter 1, “Overview of Cisco WAN and Voice Interface Cards” to
identify the WAN interface cards compatible with the Cisco 1720 router and their
required release of Cisco IOS software.
•Use Table 1-4 in Chapter 1, “Overview of Cisco WAN and Voice Interface Cards” to
identify the WAN interface cards compatible with Cisco 1600 series routers and their
required release of Cisco IOS software.
•See Chapter 2, “Installing WAN and Voice Interface Cards in a Cisco Modular Router”
for instructions to install the WAN or voice interface card in a network module or in a
chassis card slot.
•See Chapter 3, “Connecting WAN and Voice Interface Cards to a Network” for
instructions to connect the WAN or voice interface card to the network.
AudienceThispublicationisdesignedforthepersoninstallingtherouter, who should be familiar with
electronic circuitry and wiring practices and have experience as an electronic or
electromechanical technician.

About This Guide ix
Organization
Organization
The major sections of this guide are as follows:
Conventions
This publication uses the following conventions to convey instructions and information:
Chapter Title Description
Chapter 1 Overview of Cisco WAN and
Voice Interface Cards Lists the WAN and voice interface card options for Cisco modular routers,
discussesenvironmentalrequirementsand
safety recommendations, and describes
how to prepare for connections between
networks and ports.
Chapter 2 Installing WAN and Voice
Interface Cards in a Cisco
Modular Router
Includes basic installation information for
installing network modules in Cisco 3600
series and Cisco 2600 series routers, and
for installing interface cards directly into
chassis slots on Cisco 2600 series,
Cisco 1600 series, and Cisco 1720
modular routers.
Chapter 3 Connecting WAN and Voice
Interface Cards to a Network Provides basic hardware installation information for connecting WAN and
voice interface cards to a network, and
reading interface cards LEDs.
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.

Conventions
Cisco WAN Interface Cards Hardware Installation Guide
x
screen font Examples of information displayed on the screen.
boldface screen font Examples of information you must enter.
< > Nonprinting characters, for example passwords, appear in angle brackets.
[ ] Default responses to system prompts appear in square brackets.
Note Means reader take note. Notes contain helpful suggestions or references to additional
information and material.
Timesaver This symbol means the described action saves time. You can save time
by performing the action described in the paragraph.
Caution This symbol means reader be careful. In this situation, you might do
something that could result in equipment damage or loss of data.
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).
Convention Description
12
6
93

About This Guide xi
Conventions
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.
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 de advarslene
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.
Convention Description

Obtaining Service and Support
Cisco WAN Interface Cards Hardware Installation Guide
xii
Obtaining Service and Support
For service and support for a router purchased from a reseller, contact the reseller. Resellers
offer a wide variety of Cisco service and support programs, which are described in the
Cisco Information Packet that shipped with your router.
Note If you purchased your router from a reseller, you can also access Cisco Connection
Online (CCO) as a guest. CCO is Cisco Systems’ primary, real-time support channel. Your
reseller offers programs that include direct access to CCO’s services.
For service and support for a router purchased directly from Cisco, use CCO.
Cisco Connection Online
Cisco Connection Online (CCO) is Cisco Systems’ primary, real-time support channel.
Maintenance customers and partners can self-register on CCO to obtain additional
information and services.
¡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 vara
medveten 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.
Convention Description

About This Guide xiii
Cisco Connection Online
Available 24 hours a day, 7 days a week, CCO provides a wealth of standard and value-
added services to Cisco’s customers and business partners. CCO services include product
information, product documentation, software updates, release notes, technical tips, the
Bug Navigator, configuration notes, brochures, descriptions of service offerings, and
download access to public and authorized files.
CCO serves a wide variety of users through two interfaces that are updated and enhanced
simultaneously: a character-based version and a multimedia version that resides on the
World Wide Web (WWW). The character-based CCO supports Zmodem, Kermit,
Xmodem, FTP, and Internet e-mail, and it is excellent for quick access to information over
lower bandwidths. The WWW version of CCO provides richly formatted documents with
photographs, figures, graphics, and video, as well as hyperlinks to related information.
You can access CCO in the following ways:
•WWW: http://www.cisco.com
•WWW: http://www-europe.cisco.com
•WWW: http://www-china.cisco.com
•Telnet: cco.cisco.com
•Modem: From North America, 408 526-8070; from Europe, 33 1 64 46 40 82. Use the
following terminal settings:VT100 emulation; databits: 8; parity: none; stop bits: 1; and
connection rates up to 28.8 kbps.
Fora copy of CCO’s Frequently Asked Questions (FAQ), contact [email protected]. For
additional information, contact [email protected].
Note If you are a network administrator and need personal technical assistance with a
Cisco product that is under warranty or covered by a maintenance contract, contact Cisco’s
Technical Assistance Center (TAC) at 800 553-2447, 408 526-7209, or [email protected]. To
obtain general information about Cisco Systems, Cisco products, or upgrades, contact
800 553-6387, 408 526-7208, or [email protected].
Please use CCO to obtain general information about Cisco Systems, Cisco products, or
upgrades. If CCO is not accessible, contact 800 553-6387, 408 526-7208, or
[email protected].

Ordering Documentation
Cisco WAN Interface Cards Hardware Installation Guide
xiv
Ordering Documentation
Cisco documentation and additional literature are available in a CD-ROM package, which
ships with your product. The Documentation CD-ROM, a member of the Cisco Connection
Family, is updated monthly. Therefore, it might be more current than printed
documentation. To order additional copies of the Documentation CD-ROM, contact your
local sales representative or call customer service. The CD-ROM package is available as a
single package or as an annual subscription. You can also access Cisco documentation on
the World Wide Web at http://www.cisco.com, http://www-china.cisco.com, or
http://www-europe.cisco.com.
If you are reading Cisco product documentation on the World Wide Web, you can submit
comments electronically. Click Feedback in the toolbar and select Documentation. After
you complete the form, click Submit to send it to Cisco. We appreciate your comments.

CHAPTER
Overview of Cisco WAN and Voice Interface Cards 1-1
1
Overview of Cisco WAN and
Voice Interface Cards
This chapter provides an overview of Cisco WAN and voice interface cards used in Cisco
modular routers, and includes these sections:
•Cisco 3600 Series Routers on page 1-1
•Cisco 2600 Series Routers on page 1-7
•Cisco 1720 Router on page 1-12
•Cisco 1600 Series Routers on page 1-13
•Safety and Regulatory Compliance Information on page 1-16
Cisco 3600 Series Routers
The Cisco 3600 series is a multifunction, modular platform that combines dial access,
routing,LAN-to-LANservices, and multiservice integrationofvoice,video, and data in the
same device. The Cisco 3600 series includes the Cisco 3640 (see Figure 1-1) and Cisco
3620 routers (see Figure 1-2).
The Cisco 3640 has four network module slots; the Cisco 3620 has two slots. Each network
module slot accepts a variety of network module interface cards, supporting a variety of
LAN and WAN technologies.

Cisco 3600 Series Routers
Cisco WAN Interface Cards Hardware Installation Guide
1-2
Figure 1-1 Cisco 3640 Router Rear View
Figure 1-2 Cisco 3620 Router Rear View
Cisco 3600 Series Interface Numbering
Each individual network interface on a Cisco 3600 series router is identified by a slot
number and a unit number.
Slot 0Slot 1 Power supply
Slot 3
H6551
INPUT 100-240VAC 50/60HZ 3.0-1.5 AMPS
2E
2W W1
ETHERNET 1
ETHERNET 0
EN
AUI
WO
ACT
LNK
ACT
LNK
ACT
SERIAL
BRI
NT1
B1
B2
NT1
2
3
1
2E
2WW1
STP
ETHERNET 0
AUI
EN
ACT
LNK
ACT
LNK
DO NOT INSTALL WAN INTERFACE
CARDS WITH POWER APPLIED
Slot 2
ACT
SERIAL
SEE MANUAL BEFORE INSTALLATION
ETHERNET 1
2E
2W W1
1
ETHERNET 1 ETH 1
ETHERNET 0
EN
AUI
WO
ACT
LNK
ACT
LNK
ACT
SERIAL
BRI
NT1
B1
B2
NT1
2E
2WW1
ETHERNET 0
AUI
EN
ACT
LNK
ACT
LNK
DO NOT INSTALL WAN INTERFACE
CARDS WITH POWER APPLIED
ACT
SERIAL
SEE MANUAL BEFORE INSTALLATION
Slot 0
H7238
Slot 1
0
ETHERNET 1

Overview of Cisco WAN and Voice Interface Cards 1-3
Cisco 3600 Series Interface Numbering
Slot Numbering
The Cisco 3600 series router chassis contains two or four slots in which you can install
modules. You can install any module into any available slot in the chassis.
As shown in Figure 1-1 and Figure 1-2, the slots are numbered as follows:
•Slot 0 is at the bottom right (as viewed from the rear of the chassis), near the power
supply.
•Slot 1 is at the bottom left.
•Slot 2 is at the top right, above slot 0.
•Slot 3 is at the top left, above slot 1.
Some modules have two small slots, labeled W0 and W1, for WAN interface cards.
Figure 1-3 shows the W0 and W1 slots of the 2 Ethernet 2 WAN card slot
(2E 2-slot) module. You can install WAN interface cards into the small module slots (W0
and W1). Serial WAN interface cards can be installed into either slot, W0 or W1.
Figure 1-3 WAN Interface Card Slots
Unit Numbering
Cisco 3600 series routers unit numbers identify the interfaces on the modules and WAN
interface cards installed in the router. Unit numbers begin at 0 for each interface type, and
continue from right to left and (if necessary) from bottom to top. Modules and WAN
interface cards are identified by interface type, slot number, followed by a forward slash
(/), and then the unit number; for example, Ethernet 0/0.
2E
2WW1
STP
ETHERNET 0ETHERNET 1
AUI
EN
ACT LNK
WO
ACT
ILNK
Slot W1 Slot W0
H8603

Cisco 3600 Series Routers
Cisco WAN Interface Cards Hardware Installation Guide
1-4
Figure 1-4 shows a router with a 2E 2-slot module in slots 0 and 1. Two serial WAN
interface cards are installed in the module in slot 0. One serial and one ISDN BRI WAN
interface card are installed in the module in slot 1.
As shown in Figure 1-4, the unit numbers are as follows:
•Slot 0, Ethernet interface 0, referred to as Ethernet 0/0
•Slot 0, Ethernet interface 1, referred to as Ethernet 0/1
•Slot 0, serial interface 0, referred to as serial 0/0
•Slot 0, serial interface 1, referred to as serial 0/1
•Slot 1, Ethernet interface 0, referred to as Ethernet 1/0
•Slot 1, Ethernet interface 1, referred to as Ethernet 1/1
•Slot 1, serial interface 0, referred to as serial 1/0
•Slot 1, BRI interface 0, referred to as BRI 1/0
Figure 1-4 Cisco 3600 Series Unit Numbers
Power supply
BRI 1/0
Ethernet 1/0 Ethernet 0/1 Ethernet 0/0Ethernet 1/1
H8604
INPUT 100-240VAC 50/60HZ 3.0-1.5 AMPS
2E
2W W1
ETHERNET 1
ETHERNET 0
EN
AUI
WO
ACT
LNK
ACT
LNK
ACT
SERIAL
BRI
NT1
B1
B2
NT1
2
3
1
2E
2WW1
STP
ETHERNET 0
AUI
EN
ACT
LNK
ACT
LNK
ACT
SERIAL
ACT
SEE MANUAL BEFORE INSTALLATION
ETHERNET 1
Serial 1/0 Serial 0/1 Serial 0/0

Overview of Cisco WAN and Voice Interface Cards 1-5
WAN and Voice Interface Card Options for Cisco 3600 Series Routers
Voice Interface Numbering in Cisco 3600 Series Routers
Voice interfaces are numbered differently from WAN interfaces described in the previous
section, “Unit Numbering.” Voice interfaces are numbered as follows:
interface type chassis slot/voice module slot/voice interface
If you have a four-channel voice network module installed in slot 1 of your router, the voice
interfaces will be:
•Slot 1, voice network module slot 0, voice interface 0, referred to as voice 1/0/0 (closest
to chassis slot 0)
•Slot 1, voice network module slot 0, voice interface 1, referred to as voice 1/0/1
•Slot 1, voice network module slot 1, voice interface 0, referred to as voice 1/1/0
•Slot 1, voice network module slot 1, voice interface 1, referred to as voice 1/1/1 (farthest
from chassis slot 0)
WAN and Voice Interface Card Options for Cisco 3600 Series
Routers Table 1-1 lists the WAN and voice interface card options available for Cisco 3600 series
routers with their minimum software requirements for supported Cisco IOS releases.
Note Voice interface cards can only be used in voice network modules (NM-1V and
NM-2V).

Cisco 3600 Series Routers
Cisco WAN Interface Cards Hardware Installation Guide
1-6
Table 1-1 WAN and Voice Interface Card Options with Cisco IOS Releases for Cisco 3600 Series
Routers
WAN Interface Card Cisco IOS Release
11.1
Cisco IOS
Release
11.2
Cisco IOS
Release
11.3
Cisco IOS
Release
11.3T
Cisco IOS
Release
12.0
Cisco IOS
Release
12.0T
1-Port Serial
(WIC-1T) 11.1(7)AA 11.2(5)P 11.3(1) 11.3(3)T 12.0(1) 12.0(1)T
1-Port ISDN BRI S/T1
with NT1
(WIC-1B-S/T)
– 11.2(4)XA
11.2(5)P 11.3(1) 11.3(3)T 12.0(1) 12.0(1)T
1-Port ISDN BRI U2
(WIC-1B-U) – 11.2(4)XA 11/2(5)P 11.3(1) 11.3(3)T 12.0(1) 12.0(1)T
1-Port ISDN BRI S/T3
Leased Line
(WIC-1B-S/T-LL)
11.1(7)AA 11.2(9)P – 11.3(3)T – 12.0(1)T
1-Port 56/64-kbps
CSU/DSU
(WIC 1DSU-56K4)
– 11.2(12)P – 11.3(3)T – 12.0(1)T
1-Port T1
(WIC-1DSU-T1) – 11.2(12)P – 11.3(3)T – 12.0(1)T
2-Port FXS voice/fax
interface (VIC-2FXS) – – – 11.3(1)T 12.0(1) 12.0(1)T
2-Port FXO voice/fax
interface (VIC-2FXO) – – – 11.3(1)T 12.0(1) 12.0(1)T
2-Port E&M voice/fax
interface (VIC-2E/M) – – – 11.3(1)T 12.0(1) 12.0(1)T
2-Port FXO voice/fax
interface for use in
Europe
(VIC-2FXO-EU)
– – – 11.3(6)T – 12.0(1)T
2-Port E&M voice/fax
interface for use in
Australia
(VIC-2FXO-M3)
– – – 11.3(6)T – 12.0(1)T

Overview of Cisco WAN and Voice Interface Cards 1-7
Cisco 2600 Series Routers
Cisco 2600 Series Routers
The Cisco 2600 series is a multifunction platform that combines dial access, routing,
LAN-to-LAN services, and multiservice integration of voice, video, and data in the same
device. The Cisco 2600 series provides a low-entry price for medium-sized businesses. The
Cisco 2600 series has built-in LAN connections that provides a single or dual Ethernet port
(depending on model), one Ethernet, and one token ring port. Cisco 2600 series routers
also include one network module slot and two WAN slots that accept a variety of network
modules and interface cards. Figure 1-5 illustrates a Cisco 2611 router showing the
network module slot and WAN interface card slots.
2-PortISDN BRIvoice
interface
(VIC-2BRI-S/T-TE)
––––12.0(2)XD –
1 Some ISDN service providers require an external Network Termination 1 (NT1) device to connect an ISDN S/T port to the
ISDN line. If your service provider requires this, you must provide the NT1.
2 The BRI U module does not require an external NT1.
3 Some ISDN service providers require an external Network Termination 1 (NT1) device to connect an ISDN S/T port to the
ISDN line. If your service provider requires this, you must provide the NT1.
Table 1-1 WAN and Voice Interface Card Options with Cisco IOS Releases for Cisco 3600 Series
Routers (continued)
WAN Interface Card Cisco IOS Release
11.1
Cisco IOS
Release
11.2
Cisco IOS
Release
11.3
Cisco IOS
Release
11.3T
Cisco IOS
Release
12.0
Cisco IOS
Release
12.0T

Cisco 2600 Series Routers
Cisco WAN Interface Cards Hardware Installation Guide
1-8
Figure 1-5 Cisco 2600 Series Rear View
Cisco 2600 Series Interface Numbering
Each individual network interface on a Cisco 2600 series router is identified by a slot
number and a unit number.
Slot and Unit Numbering
The Cisco 2600 series router chassis contains one slot in which you can install a network
module. This is always slot 1.
Unit numbers identify the interfaces on the modules and WAN interface cards installed in
the router. Unit numbers begin at 0 for each interface type, and continue from right to left
and (if necessary) from bottom to top. Modules and WAN interface cards are identified by
interface type, slot number, followed by a forward slash (/), and then the unit number; for
example, Ethernet 0/0.
Figure 1-6 shows a router with a 2E 2-slot module in slot 1. One serial and one ISDN BRI
WAN interface card are installed in the module.
SEE MANUAL BEFORE INSTALLATION
SERIAL 1
SERIAL 0
CONN CONN WIC
2A/S
SEE MANUAL BEFORE INSTALLATION
SERIAL 1
SERIAL 0
CONN CONN WIC
2T
Cisco 2612
100-240V– 1A
50/60 Hz 47 W
W0
AUX
CONSOLE
ETHERNET 0 ACT
LINKACTTOKEN RING 1LINK
W1
Network
module
slot
10344
WAN interface
card slot W1
WAN interface
card slot W0

Overview of Cisco WAN and Voice Interface Cards 1-9
Cisco 2600 Series Interface Numbering
Figure 1-6 Cisco 2600 Series Unit Numbers
Note WAN interface card slots (built into the chassis) are always numbered as slot 0, even
if the interface card is installed in the slot labeled W1.
Figure 1-6 shows the following unit numbers:
•First Ethernet interface, referred to as Ethernet 0/0
•Token Ring interface, referred to as Token Ring 0/0
•Slot W0, serial interface 0, referred to as serial 0/0
•Slot W1, serial interface 1, referred to as serial 0/1
•Slot 1, Ethernet interface 0, referred to as Ethernet 1/0
•Slot 1, Ethernet interface 1, referred to as Ethernet 1/1
•Slot 1, serial interface 0, referred to as serial 1/0
•Slot 1, BRI interface 0, referred to BRI 1/0
Cisco 2612
100-240V– 1A
50/60 Hz 47 W
W0
W1
16552
Ethernet
0/0 Auxiliary
port
Console
port
Serial 0/0
Serial 0/1
2E
2W W1
ETHERNET 1
ETHERNET 0
EN
AUI
WO
ACT
LNK
ACT
LNK
ACT
SERIAL
BRI
NT1
B1
B2
NT1
SEE MANUAL BEFORE INSTALLATION
AUX
CONSOLE
ETHERNET 0/0 ACT
LINK
ACT
TOKEN RING 0/0
LINK
SERIALCONN
W0
SERIALCONN
Token
Ring 0/0
Serial 1/0
BRI 1/0
Ethernet
1/0
Ethernet
1/1

Cisco 2600 Series Routers
Cisco WAN Interface Cards Hardware Installation Guide
1-10
Voice Interface Numbering in Cisco 2600 Series Routers
Voice interfaces are numbered differently from WAN interfaces described in the previous
section, “Slot and Unit Numbering.” Voice interfaces are numbered as follows:
interface type chassis slot/voice module slot/voice interface
If you have a four-channel voice network module installed in slot 1 of your router, the voice
interfaces will be:
•Slot 1, voice network module slot 0, voice interface 0, referred to as voice 1/0/0 (closest
to the chassis WAN interface card slots)
•Slot 1, voice network module slot 0, voice interface 1, referred to as voice 1/0/1
•Slot 1, voice network module slot 1, voice interface 0, referred to as voice 1/1/0
•Slot 1, voice network module slot 1, voice interface 1, referred to as voice 1/1/1 (farthest
from the chassis WAN interface card slots)
WAN and Voice Interface Card Options for Cisco 2600 Series
Routers Table 1-2 lists the WAN and voice interface card options available for Cisco 2600 series
routers with their minimum software requirements for supported Cisco IOS releases.
Note Voice interface cards can only be used in voice network modules (NM-1V and
NM-2V).

Overview of Cisco WAN and Voice Interface Cards 1-11
WAN and Voice Interface Card Options for Cisco 2600 Series Routers
Table 1-2 WAN and Voice Interface Card Options with Cisco IOS Releases for
Cisco 2600 Series Routers
WAN Interface Card
Cisco IOS
Release
11.3
Cisco IOS
Release
11.3T
Cisco IOS
Release
12.0
Cisco IOS
Release
12.0T
1-Port Serial (WIC-1T) 11.3(2)XA 11.3(4)T 12.0(1) 12.0(1)T
2-Port Serial (WIC-2T) 11.3(2)XA 11.3(4)T 12.0(1) 12.0(1)T
2-Port Asynchronous/Synchronous
Serial (WIC-2A/S) 11.3(2)XA 11.3(4)T 12.0(1) 12.0(1)T
1-Port ISDN BRI S/T1
(WIC-1B-S/T) 11.3(2)XA 11.3(4)T 12.0(1) 12.0(1)T
1-Port ISDN BRI U2
(WIC-1B-U) 11.3(2)XA 11.3(4)T 12.0(1) 12.0(1)T
1-Port 56/64-kbps CSU/DSU
(WIC-1DSU-56K4) 11.3(2)XAT 11.3(4)T – 12.0(1)T
1-Port T1/FT1 (WIC-1DSU-T1) – 11.3(4)T – 12.0(1)T
2-Port FXS voice/fax interface
(VIC-2FXS) – 11.3(1)T 12.0(1) 12.0(1)T
2-Port FXO voice/fax interface
(VIC-2FXO) – 11.3(1)T 12.0(1) 12.0(1)T
2-Port E&M voice/fax interface
(VIC-2E/M) – 11.3(1)T 12.0(1) 12.0(1)T
2-Port FXO voice/fax interface for
use in Europe
(VIC-2FXO-EU)
– 11.3(6)T – 12.0(1)T
2-Port E&M voice/fax interface for
use in Australia
(VIC-2FXO-M3)
– 11.3(6)T – 12.0(1)T
2-Port ISDN BRI voice interface
(VIC-2BRI-S/T-TE) – – 12.0(2)XD –
1 Some ISDN service providers require an external Network Termination 1 (NT1) device to connect an ISDN
S/T port to the ISDN line. If your service provider requires this, you must provide the NT1.
2 The BRI U module does not require an external NT1.

Cisco 1720 Router
Cisco WAN Interface Cards Hardware Installation Guide
1-12
Cisco 1720 Router
The Cisco 1720 router is a small, modular desktop router that links small- to medium-size
remote Ethernet and Fast Ethernet LANs over one to four WAN connections to regional and
central offices. (See Figure 1-7.)
The Cisco 1720 router includes one Fast Ethernet port and two WAN interface card slots.
Figure 1-7 Cisco 1720 Router Rear View
Table 1-3 lists WAN interface card options available for the Cisco 1720 router with their
minimum software requirements for Cisco IOS Release 12.0.
17369
Interface card slot WIC1
FDX LNK100
WIC0OK WIC1OK
CONSOLE
AUX
Cisco 1720
Interface card slot WIC0
10/100 ETHERNET
+5, +12, -12 VDC