Black Box LR0002A-BSDN User manual

CUSTOMER
SUPPORT
INFORMATION
Order toll-free in the U.S. 24 hours, 7 A.M. Monday to midnight Friday: 877-877-BBOX
FREE technical support, 24 hours a day, 7 days a week: Call 724-746-5500 or fax [phone]
Mail order: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018
Web site: www.blackbox.com • E-mail: [email protected]
JANUARY 1997
LR0002A-BSDN LR0002A-BV35 LR0002A-TSDN LR0002A-TV35
LR0002A-BUDN LR0002A-BV36 LR0002A-TUDN LR0002A-TV36
LR0002A-BCSU LR0002A-BX21 LR0002A-TCSU LR0002A-TX21
LR0002A-BV24 LR0002A-B530 LR0002A-TV24 LR0002A-T530
Internet Access Router
Internet Acess Router
READY
POWER
ERROR
DATA
LAN LINK

3
FCC STATEMENT
FEDERAL COMMUNICATIONS COMMISSION
AND
INDUSTRY CANADA
RADIO FREQUENCY INTERFERENCE STATEMENTS
This equipment generates, uses, and can radiate radio frequency energy
and if not installed and used properly, that is, in strict accordance with the
manufacturer’s instructions, may cause interference to radio communication.
It has been tested and found to comply with the limits for a Class A
computing device in accordance with the specifications in Subpart J of
Part 15 of FCC rules, which are designed to provide reasonable protection
against such interference when the equipment is operated in a commercial
environment. Operation of this equipment in a residential area is likely to
cause interference, in which case the user at his own expense will be required
to take whatever measures may be necessary to correct the interference.
Changes or modifications not expressly approved by the party responsible for
compliance could void the user’s authority to operate the equipment.
This digital apparatus does not exceed the Class A limits for radio noise emission from
digital apparatus set out in the Radio Interference Regulation of Industry Canada.
Le présent appareil numérique n’émet pas de bruits radioélectriques dépassant les limites
applicables aux appareils numériques de classe A prescrites dans le Règlement sur le
brouillage radioélectrique publié par Industry Canada.

4
INSTRUCCIONES DE SEGURIDAD
NORMAS OFICIALES MEXICANAS (NOM)
ELECTRICAL SAFETY STATEMENT
INSTRUCCIONES DE SEGURIDAD
1. Todas las instrucciones de seguridad y operación deberán ser leídas antes
de que el aparato eléctrico sea operado.
2. Las instrucciones de seguridad y operación deberán ser guardadas para
referencia futura.
3. Todas las advertencias en el aparato eléctrico y en sus instrucciones de
operación deben ser respetadas.
4. Todas las instrucciones de operación y uso deben ser seguidas.
5. El aparato eléctrico no deberá ser usado cerca del agua—por ejemplo,
cerca de la tina de baño, lavabo, sótano mojado o cerca de una alberca,
etc..
6. El aparato eléctrico debe ser usado únicamente con carritos o pedestales
que sean recomendados por el fabricante.
7. El aparato eléctrico debe ser montado a la pared o al techo sólo como
sea recomendado por el fabricante.
8. Servicio—El usuario no debe intentar dar servicio al equipo eléctrico más
allá a lo descrito en las instrucciones de operación. Todo otro servicio
deberá ser referido a personal de servicio calificado.
9. El aparato eléctrico debe ser situado de tal manera que su posición no
interfiera su uso. La colocación del aparato eléctrico sobre una cama,
sofá, alfombra o superficie similar puede bloquea la ventilación, no se
debe colocar en libreros o gabinetes que impidan el flujo de aire por los
orificios de ventilación.
10. El equipo eléctrico deber ser situado fuera del alcance de fuentes de
calor como radiadores, registros de calor, estufas u otros aparatos
(incluyendo amplificadores) que producen calor.

5
INSTRUCCIONES DE SEGURIDAD
11. El aparato eléctrico deberá ser connectado a una fuente de poder sólo
del tipo descrito en el instructivo de operación, o como se indique en el
aparato.
12. Precaución debe ser tomada de tal manera que la tierra fisica y la
polarización del equipo no sea eliminada.
13. Los cables de la fuente de poder deben ser guiados de tal manera que no
sean pisados ni pellizcados por objetos colocados sobre o contra ellos,
poniendo particular atención a los contactos y receptáculos donde salen
del aparato.
14. El equipo eléctrico debe ser limpiado únicamente de acuerdo a las
recomendaciones del fabricante.
15. En caso de existir, una antena externa deberá ser localizada lejos de las
lineas de energia.
16. El cable de corriente deberá ser desconectado del cuando el equipo no
sea usado por un largo periodo de tiempo.
17. Cuidado debe ser tomado de tal manera que objectos liquidos no sean
derramados sobre la cubierta u orificios de ventilación.
18. Servicio por personal calificado deberá ser provisto cuando:
A: El cable de poder o el contacto ha sido dañado; u
B: Objectos han caído o líquido ha sido derramado dentro del
aparato; o
C: El aparato ha sido expuesto a la lluvia; o
D: El aparato parece no operar normalmente o muestra un cambio en su
desempeño; o
E: El aparato ha sido tirado o su cubierta ha sido dañada.

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INTERNET ACCESS ROUTER
TRADEMARKS
IBM®and AS/400®are registered trademarks of IBM Corporation.
VT52™ , VT100™ , VT200™ , and VT220™are trademarks of Compaq Computer
Corporation.
Netscape®is a registered trademark of Netscape Communications
Corporation.
Microsoft®is a registered trademark of Microsoft Corporation.
Macintosh®is a registered trademark of Apple Computer, Inc.
UNIX®is a registered trademark of UNIX System Laboratories, Inc.
Novell®is a registered trademark of Novell Incorporated.
All applied-for and registered trademarks are the property of their respective
owners.

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INTERNET ACCESS ROUTER
CONTENTS
1. Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
2. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
2.1 Internet Access Router Description . . . . . . . . . . . . . . . . . . .12
2.2 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
2.3 Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
2.4 Internet Access Router and Single IP . . . . . . . . . . . . . . . . . .15
2.5 Single IP Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
3. Quick Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
3.1 Connecting to the Internet/Intranet as a Public IP net . . .16
3.2 Connecting to the Internet/Intranet as a Private IP net . .17
3.3 Configuring the Internet Access Router . . . . . . . . . . . . . . .18
4. Installation and Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
4.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
4.2 Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
4.3 Site Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
4.4 Cable Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
4.5 Front Panel Controls and Indicators . . . . . . . . . . . . . . . . . .26
4.6 Operating Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
5. Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
5.1 Initial Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
5.1.1 Connecting to the Terminal . . . . . . . . . . . . . . . . . . .28
5.1.2 Setting a Password . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
5.1.3 Changing the Password . . . . . . . . . . . . . . . . . . . . . . .29
5.1.4 Removing the Password . . . . . . . . . . . . . . . . . . . . . . .29
5.2 Menus and Screens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
5.3 Quick Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
5.3.1 Asynchronous/Synchronous V24 . . . . . . . . . . . . . . .32
5.3.2 Synchronous: V.35, V.36, X.21, RS-530, and
DDS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
5.3.3 ISDN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
5.3.4 Frame Relay: V.24, V.35, V.36, X.21, RS-530
and DDS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39
5.4 Security Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41
5.4.1 Enabling Telnet Access . . . . . . . . . . . . . . . . . . . . . . . .41
5.4.2 Enabling SNMP Access . . . . . . . . . . . . . . . . . . . . . . . .42
5.4.3 Enabling/Disabling the Solid Firewall . . . . . . . . . . .43
5.5 Diagnostic Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44

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INTERNET ACCESS ROUTER
CONTENTS (continued)
6. Reducing Operating Costs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46
6.1 Ways of Reducing Operating Costs . . . . . . . . . . . . . . . . . . .46
6.1.1 Connection on Demand . . . . . . . . . . . . . . . . . . . . . . .46
6.1.2 Filtering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46
6.1.3 Van Jacobson Compression . . . . . . . . . . . . . . . . . . . .47
7. LAN Access Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48
7.1 Securing LAN Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48
7.1.1 Telnet and SNMP . . . . . . . . . . . . . . . . . . . . . . . . . . . .48
7.1.2 Solid Firewall . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48
8. Advanced Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49
8.1 Advanced Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49
8.2 Setup Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50
8.2.1 Host Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51
8.2.2 Routing/Bridging . . . . . . . . . . . . . . . . . . . . . . . . . . . .56
8.2.3 Interface Parameters . . . . . . . . . . . . . . . . . . . . . . . . . .59
8.2.4 Access Control (Security) . . . . . . . . . . . . . . . . . . . . . .69
8.2.5 WAN Economy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .71
8.2.6 Factory Default Options . . . . . . . . . . . . . . . . . . . . . . .75
8.3 View Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .76
8.4 Device Control Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .78
8.5 List of Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .80
Appendix A: Single IP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .88
A.1 Internet Access Router and Single IP . . . . . . . . . . . . . . . . .88
A.2 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .89
A.2.1 Small Office Internet Access vs. Single PC
Internet Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .89
A.2.2 Simultaneous Multiple Access to the
Internet/Intranet . . . . . . . . . . . . . . . . . . . . . . . . . . . .90
A.2.3 IP Applications: Web Browsing, FTP, Telnet
E-mail, News, and Others . . . . . . . . . . . . . . . . . . . . . .90
A.2.4 Solid Firewall . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .91
A.2.5 Connection and Disconnection on Demand . . . . . .91
A.2.6 Filtering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .91
A.3 How Single IP Works . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .91
A.4 Implementing Single IP . . . . . . . . . . . . . . . . . . . . . . . . . . . .93
A.5 Questions About Single IP . . . . . . . . . . . . . . . . . . . . . . . . . .96

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INTERNET ACCESS ROUTER
CONTENTS (continued)
Appendix B: Fault Isolation and Troubleshooting . . . . . . . . . . . . . 97
Appendix C: Interface Specifications and Cable Diagrams . . . . . .99
Appendix D: Software Download . . . . . . . . . . . . . . . . . . . . . . . . . . .102
D.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .102
D.2 Downloading via XMODEM . . . . . . . . . . . . . . . . . . . . . . . .102
D.3 Downloading via TFTP . . . . . . . . . . . . . . . . . . . . . . . . . . . . .103

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INTERNET ACCESS ROUTER
1. Specifications
LAN Interface
Standard — Conforms to IEEE 802.3
Type — B models: 10BASE2 (BNC) (Thin Ethernet);
T models: 10BASE-T (UTP)
Link Interface
Model Interface Connectors Data Rates
LR0002A-BSDN ISDN “S” Interface RJ-45 Up to 64 Kbps
LR0002A-BUDN ISDN “U” Interface RJ-45 Up to 64 Kbps
LR0002A-BCSU CSU/DSU RJ-45 Up to 56 Kbps
LR0002A-BV24 V.24/RS-232 DB25 female Up to 64 Kbps
(asynchronous)
2.4 to 115.2 Kbps
(synchronous)
LR0002A-BV35 V.35 34-pin female Up to T1
LR0002A-BV36 V.36/RS-422 DB37 female Up to T1
LR0002A-BX21 X.21 DB15 female Up to T1
LR0002A-B530 RS-530 DB25 female Up to T1
LR0002A-TSDN ISDN “S” Interface RJ-45 Up to 64 Kbps
LR0002A-TUDN ISDN “U” Interface RJ-45 Up to 64 Kbps
LR0002A-TCSU CSU/DSU RJ-45 Up to 56 Kbps
LR0002A-TV24 V.24/RS-232 DB25 female Up to 64 Kbps
(asynchronous)
2.4 to 115.2 Kbps
(synchronous)
LR0002A-TV35 V.35 34-pin female Up to T1
LR0002A-TV36 V.36/RS-422 DB37 female Up to T1
LR0002A-TX21 X.21 DB15 female Up to T1
LR0002A-T530 RS-530 DB25 female Up to T1
Protocol — Synchronous/asynchronous PPP, SLIP, CSLIP, Multi-link PPP

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INTERNET ACCESS ROUTER
Control Interface
Type — V.24/RS-232
Connector — DB9 (rear panel)
Data Rate — 2.4 to 19.2 Kbps, 8 bits, no parity, automatic rate detection
LED Indicators
Power — ON when unit is powered
Ready — ON when packets can be transferred
LAN Data — ON when a packet is received or transmitted on the LAN side
LAN Err — ON when LAN interface indicates an error
Link Data — ON when a packet is received or transmitted on the LINK side
Link Err — ON when LINK interface indicates an error
Panel Controls
Power ON/OFF — Rear-panel power supply
Voltage — 100-230 VAC
Frequency — 47 to 63 Hz
Power — 10 VA Max.
Environment
Temperature — 32 to 122 °F (0 to 50 °C)
Humidity — 0 to 90%, non-condensing
Physical
Size — 1.8”H x 8.5”W x 9.6”D (4.4 x 21.6 x 24 cm)
Weight — 2.1 lb. (0.96 kg)

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INTERNET ACCESS ROUTER
2. Introduction
2.1 Internet Access Router Description
The Internet Access Router is a standalone IP router for the small office. It
connects a small or medium-sized network to the Internet or Intranet. Quick
setup and configuration menus provide on-screen instructions that guide you
through installation and configuration procedures. The following models are
available:
Table 2-1. Internet Access Router Models.
Model LAN Interface Link Interface
LR0002A-BSDN 10BASE2 (BNC) ISDN “S” Interface
LR0002A-BUDN 10BASE2 (BNC) ISDN “U” Interface
LR0002A-BCSU 10BASE2 (BNC) CSU/DSU
LR0002A-BV24 10BASE2 (BNC) V.24/RS-232
LR0002A-BV35 10BASE2 (BNC) V.35
LR0002A-BV36 10BASE2 (BNC) V.36/RS-422
LR0002A-BX21 10BASE2 (BNC) X.21
LR0002A-B530 10BASE2 (BNC) RS-530
LR0002A-TSDN 10BASE-T (UTP) ISDN “S” Interface
LR0002A-TUDN 10BASE-T (UTP) ISDN “U” Interface
LR0002A-TCSU 10BASE-T (UTP) CSU/DSU
LR0002A-TV24 10BASE-T (UTP) V.24/RS-232
LR0002A-TV35 10BASE-T (UTP) V.35
LR0002A-TV36 10BASE-T (UTP) V.36/RS-422
LR0002A-TX21 10BASE-T (UTP) X.21
LR0002A-T530 10BASE-T (UTP) RS-530
The Internet Access Router includes a feature called Single IP, which allows
users in a small office to connect to the Internet/Intranet quickly and
transparently. Connection can be made via ISDN, PSTN, Frame Relay, or
Leased Lines. A description of the Single IP features can be found in Section
2.5.

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INTERNET ACCESS ROUTER
2.2 Features
• Connects a small office to the Internet/Intranet.
• Supports Single IP, which allows a user to connect to the
Internet/Intranet quickly and transparently.
• PPP multi-link support enables maximum use of ISDN lines.
• Integral Frame Relay operating at data rates up to T1.
• Supports asynchronous, synchronous, ISDN, and CSU/DSU WAN
interfaces.
• Supports 10BASE2 or 10BASE-T LAN interface.
• Supports TELNET, allowing configuration and control of the device over
WAN and LAN.
• Fast installation can be performed from a terminal emulator or via
TELNET.
• PAP/CHAP provides access authentication.
• Solid Firewall feature allows the user to block all access from the outside
into the LAN.
• Undesired access to the Router via TELNET or SNMP can be blocked.
• Connection on demand feature reduces WAN costs.
• An SNMP agent provides management by any standard SNMP
management station.
• Software downloading is available using XMODEM or TFTP.
2.3 Application
The Internet Access Router connects your Ethernet LAN to the Internet or
Intranet. Connection is made via ISDN BRI, Frame Relay, PSTN, leased line,
or DDS (see Figure 2-1).
ISDN BRI (Integrated Services Digital Network)—ISDN is a
telecommunications standard that is capable of sending digitally encoded
voice, data, video, and other signals on the same line. BRI (Basic Rate
Interface) indicates that the service is provided over two B channels of 64K
each.

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INTERNET ACCESS ROUTER
Frame Relay is a network interface that provides high-speed frame or packet
transmission with minimum delay and maximum use of bandwidth.
PSTN (Public Switched Telephone Network) is the telecommunications
network commonly accessed by telephones, key systems, private telephone
exchanges, and data equipment. Access can be via regular switched circuits,
or dedicated leased lines.
DDS (Digital Data Service)—Digital leased lines that support transmission
rates between 2.4 and 56 Kbps.
Internet/
Intranet
PSTN Frame
Relay
ISDN
BRI
Leased
DDS 56 Leased
Line
Internet Access Router
Ethernet
LAN
Figure 2-1. Typical Application of the Internet Access Router.

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INTERNET ACCESS ROUTER
2.4 Internet Access Router and Single IP
Single IP is a feature of the Internet Access Router that can be enabled or
disabled by the user. When Single IP is enabled, the Router allows users in a
small office to connect to the Internet/Intranet quickly and transparently.
Connection can be made via ISDN, PSTN, Frame Relay, or leased lines. Single
IP also completely protects all the small office users from hackers on the
Internet and Intranet.
Normally, a LAN requires a complete statically assigned, unique, and legal
subnet in order to connect to the Internet or Intranet. Single IP allows an
entire small office to connect to the Internet or Corporate Intranet using only
one dynamically assigned IP address received from the IP Provider via a dial-
up modem, ISDN, Frame Relay, or leased-line connection.
Single IP is recommended for small-office LANs where up to around 20
users are expected at any one instant to access the Internet/Intranet.
2.5 Single IP Features
• Allows a small office to connect to the Internet/Intranet in the same way
as a single PC.
• Requires only one legal IP address.
• Dynamically obtains a single temporary IP address from the Router at the
other end of the connection (your Internet service provider, for example)
using standard IPCP.
• Allows a small office to use any private IP subnet.
• Allows up to 20 users to access the Internet/Intranet via Single IP
simultaneously.
• Allows Web browsing, FTP, Telnet, E-mail, News, and other IP applications
using any TCP/IP stack on any type of station in the small office.
• Provides total security against Internet hackers using the Solid Firewall
feature.
• Allows automatic connection and disconnection of the link by Single IP
based on actual or specific use of the Internet/Intranet.
• Allows filtering of traffic on the link to reduce waste of bandwidth and to
improve security.

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INTERNET ACCESS ROUTER
3. Quick Installation
This section describes procedures for quick installation and connection of the
Internet Access Router to the Internet/Intranet. A checklist describes things
you should do before connecting to the Internet/Intranet. For more detailed
installation instructions, refer to Chapter 4.
3.1 Connecting to the Internet/Intranet as a Public IP Net
Use the checklist below to make sure you are ready to connect to the
Internet/Intranet.
√Subscribe to the Internet Service Provider (ISP) and request a static IP
subnet.
√Request a dialup telephone number, your username, and your password
from the ISP. Configure this into the Internet Access Router using the
Quick Setup option. Check whether a login script is necessary to access
the ISP. If it is, call for technical support.
√Disable the Single IP in the Quick Setup option.
√Make sure the line (ISDN, PSTN, Frame Relay, or DDS) to the ISP is
working properly.
√Use the static IP subnet you have obtained to configure the LAN IP host
addresses of the Internet Access Router.
Preparing Your PCs
√Make sure your PCs have a correctly installed TCP/IP stack such as
WinSock or Chameleon.
√Assign an IP address, from the static IP subnet to each PC.
√Make sure that each PC has the correct subnet mask.
√Configure each PC with the Router as the Default Gateway.
√Configure each PC with the ISP’s DNS IP address.
√Check that your small-office LAN is correctly set up to work with IP.

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INTERNET ACCESS ROUTER
3.2 Connecting to the Internet/Intranet as a Private IP net
Use the checklist below to make sure you are ready to connect to the
Internet/Intranet.
Internet Checklist
√Subscribe to the Internet Service Provider (ISP) and request a single-user
subscription connection.
√Decide on a private IP net for your small-office LAN (Reference RFC
1918). This address should have a different network number from the
provider’s network number. Otherwise, the chosen IP net number is
irrelevant.
√Request a dialup telephone number, your username and password from
the ISP. Configure this into the Router using the Quick Setup option.
Check whether a login script is necessary to access the ISP. If it is, call for
technical support.
√Enable the Single IP in the Router Setup option.
√Make sure the line (ISDN, PSTN, Frame Relay, or DDS) to the ISP is
working properly.
√Use the private IP subnet you have obtained to configure the private host
addresses of the Router.
√Check that your small-office LAN is correctly set up to work with IP.
Preparing Your PCs
√Make sure your PCs have a correctly installed TCP/IP stack such as
WinSock or Chameleon.
√Assign an IP address, unique to the LAN, to each PC.
√Configure each PC with the Router as the Default Gateway.
√Make sure that each PC has a correct subnet mask.
√Configure each PC with the ISP’s DNS IP address.
√Check that your small-office LAN is correctly set up to work with IP.

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INTERNET ACCESS ROUTER
3.3 Configuring the Internet Access Router
To set up and configure the Router:
1. Connect one of the PCs in your small-office LAN to the Router as a
terminal emulator. Connection can be via the control port or TELNET.
2. From the Main Menu, select the Quick Setup option. Follow the on-
screen instructions to enter parameters.
Your small-office PCs are now ready to connect to the Internet.

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INTERNET ACCESS ROUTER
4. Installation and Operation
4.1 General
The Internet Access Router is delivered completely assembled. To install the
Router, follow the steps below:
• Unpack the Router
• Connect to the power source
• Connect to the LAN
• Connect to the link
• Connect to the Terminal Emulator
After installing the unit, refer to Chapter 5 for configuration instructions.
If you encounter a problem, refer to Appendix B for fault-isolation and
troubleshooting instructions.
4.2 Unpacking
Inspect the container before unpacking. Report evidence of damage
immediately to your dealer. Unpack the equipment as follows:
1. Place the container on a clean, flat surface, cut all straps, and open or
remove the top.
2. Take out the Router carefully and place it securely on a clean surface.
3. Inspect the Router for damage. Report any damage found immediately.

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INTERNET ACCESS ROUTER
4.3 Site Requirements
Before installing the Router, pay attention to the following:
Power
The Router should be installed within 5 feet (1.5 m) of a grounded AC outlet
furnishing 115 VAC (or 230 VAC).
WARNING
Do not adjust, maintain, or repair the opened device under voltage. You
could be shocked! All repairs should be done by competent technicians
who are aware of the hazards involved.
Front and Rear Panel Clearance
Allow at least 4 inches (10 cm) clearance at the rear of the unit for interface
cable connections.
Operating Environment
The operating temperature should be regulated between 32 and 122 °F (0
and 50 °C) with a relative humidity of up to 90%, noncondensing.
Installation in a 19” rack (optional)
The Router is designed for installation on top of a bench or shelf or secured
to a 19” rack. A rack adapter kit provides the hardware you need to install the
unit.
4.4 Cable Connections
AC Power Connection
AC power should be supplied to the Router through a standard power cable
with a grounded three-prong plug. A 1-amp slow-blow fuse is present in the
power supply unit.
WARNING
To prevent electrical fire hazard, always replace the fuse with the same
type and rating as indicated.

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INTERNET ACCESS ROUTER
1. Connect the power cable to the power port located on the right hand
side of the Router rear panel.
2. Connect the three-prong plug to a grounded AC outlet.
Connecting to the Link
A connector is provided for connection of the interface to the
communication link. Refer to Table C-1 for Link connector pin assignments.
Note that X.21 and V.36 connections are provided by adapter cables to the
RS-530 (25-pin connector) on the Router’s rear panel.
To connect to the Link:
1. Attach the cable with the interface connector to the link port on the rear
panel of the Router.
2. Attach the other side of the cable to the wall outlet or modem.
See Figure 4-2 for illustrations of the Router’s rear panel with ISDN, V.24,
and V.35 connectors.
WARNING
Take care to insert the ISDN or DDS connector into the assigned port and
not into the 10BASE-T port. This can damage the device. Refer to Figure
4-2 for placement of the ports on the rear panel.