Table Of Contents
About This Guide
Obtaining Documentation
Cisco.com
Documentation CD-ROM
Ordering Documentation
Documentation Feedback
Obtaining Technical Assistance
Cisco.com
Technical Assistance Center
Cisco TAC Website
Cisco TAC Escalation Center
Obtaining Additional Information
About This Guide
This preface describes the audience for, organization of, and conventions used in this guide. It also provides information on how to access this guide and other Cisco documentation on the Documentation CD-ROM that ships with Cisco routers and is available on the World Wide Web.
This document provides software configuration information for the following Cisco routers:
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Cisco 801, 802, 803, 804, 811, and 813 ISDN routers
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Cisco 805 serial interface router
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Cisco 806 Ethernet router
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Cisco 820 series routers
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Cisco 831, 836, and 837 routers
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Cisco SOHO 70 series routers
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Cisco SOHO 91, 96, and 97 routers
Audience
This guide is intended for network administrators whose backgrounds vary from having no or little experience configuring routers to having a high level of experience. You can use this guide in the following ways:
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You have configured the software using the Cisco Router Web Setup tool, and want to configure additional advanced software features using the command-line interface (CLI).
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You want to configure the software using only the CLI.
Note
Cisco recommends that inexperienced network administrators use the Cisco Router Web Setup tool to configure their routers.
See the "Organization" section of this guide to help you find the chapter(s) containing the information you need to configure your software.
Organization
This guide contains the following information:
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Chapter 1, "Concepts"—Provides general concept explanations of the Cisco 800 series and Cisco SOHO routers.
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Chapter 2, "Configuring Basic Networks"—Describes three basic networks that are appropriate to small independent offices and/or telecommuters.
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Chapter 3, "Configuring Advanced Networks"—Presents more advanced network scenarios involving a private IP network to the Internet and a corporate network, and a remote network to two corporate networks.
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Chapter 4, "Network Scenarios"—Describes five Internet access scenarios and one voice scenario with their specific network topologies and configurations.
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Chapter 5, "Configuring Remote CAPI"—Describes the Remote Common Application Programming Interface (CAPI), a PC-based application programming interface standard used to access ISDN equipment.
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Chapter 6, "Configuring Telephone Interfaces"—Describes how to configure standard and advanced features for the Cisco 800 series routers that support telephone features.
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Chapter 7, "Router Feature Configuration"—Explains basic router configuration, feature by feature.
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Chapter 8, "Advanced Router Configuration"—Explains advanced router configuration features.
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Chapter 9, "Troubleshooting"—Provides information on identifying and solving problems with the ADSL line and the telephone interface. Also explains how to recover a lost software password.
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Appendix A, "Cisco IOS Basic Skills"—Explains what you need to know about the Cisco IOS software before you begin to configure it.
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Appendix B, "ROM Monitor"—Describes the use of the ROM Monitor (ROMMON) utility.
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Appendix C, "Common Port Assignments"—Describes the currently assigned Transmission Control Protocol (TCP) and User Datagram Protocol (UDP) port numbers.
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Appendix D, "Provisioning an ISDN Line"—Describes ISDN lines and switches and the features available, and tells how to order an ISDN line.
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Appendix E, "ISDN BRI Cause Values"—Describes ISDN BRI standard cause values that might be received from the ISDN switch to indicate ISDN call status.
Conventions
This guide uses the following conventions for instructions and information.
Notes, Cautions, and Timesavers
Notes, cautions, and time-saving tips use the following conventions and symbols.
Note
Means reader take note. Notes contain helpful suggestions or references to materials not contained in this manual.
Caution 
This caution symbol means
reader be careful. In this situation, you might do something that could result in equipment damage or loss of data.
Timesaver
This symbol means the described action saves time.
Command Conventions
Table 1 describes the command syntax used in this document.
Table 1 Conventions
Convention
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Description
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boldface
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Commands and keywords.
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italic
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Command input that is supplied by you.
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[ ]
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Optional keywords and default responses to system prompts appear within square brackets.
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{x | x | x}
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A choice of keywords (represented by x) appears in braces separated by vertical bars. You must select one.
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^ or Ctrl
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Represent the key labeled Control. For example, when you read ^D or Ctrl-D, you should hold down the Control key while you press the D key.
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Examples of information displayed on the screen.
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Examples of information that you must enter.
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Related Documents
The following publications provide related information on these products:
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Cisco 800 series routers
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Cisco 800 Series Router Cabling and Setup Quick Start Guide—Provides quick installation information on the Cisco 801-804 routers.
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Cisco 800 Series Routers Hardware Installation Guide—Provides installation information on the Cisco 801-804 routers.
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Cisco 805 router
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Cisco 805 Router Cabling and Setup Quick Start Guide—Provides quick installation information on the Cisco 805 router.
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Cisco 805 Router Hardware Installation Guide—Provides installation information on the Cisco 805 router.
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Cisco 806 router
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Cisco 806 Router Cabling and Setup Quick Start Guide—Provides quick installation information on the Cisco 806 router.
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Cisco 806 Router Hardware Installation Guide—Provides installation information on the Cisco 806 router.
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Cisco 811 and 813 routers
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Cisco 811 and 813 Router Cabling and Setup Quick Start Guide—Provides quick installation information on the Cisco 811 and 813 routers.
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Cisco 811 and 813 Router Hardware Installation Guide—Provides installation information on the Cisco 806 router.
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Cisco 826 router
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Cisco 826 Routers Hardware Installation Guide—Provides installation information on the Cisco 826 routers.
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Cisco 826 and Cisco SOHO 76 Router Quick Start Guide—Provides quick installation information on the Cisco 826 router.
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Cisco 827 router
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Cisco 827 Routers Hardware Installation Guide—Provides installation information on the Cisco 827 routers.
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Cisco 827 Router Cabling and Setup Quick Start Guide—Provides quick installation information on the Cisco 827 routers.
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Cisco 828 and Cisco SOHO 78 routers
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Cisco 828 and SOHO 78 Cabling and Setup Quick Start Guide—Provides quick installation information on the Cisco 828 and Cisco SOHO 78 routers.
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Cisco 828 and SOHO 78 Routers Hardware Installation Guide—Provides installation information on the Cisco 828 and Cisco SOHO 78 routers.
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Cisco SOHO 77 router
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Configuration Note for Cisco SOHO Series Routers—Describes software configuration information for the Cisco small office/home office (SOHO) 77 router. For information on hardware installation, refer to the Cisco 827 Routers Hardware Installation Guide.
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Cisco 831 and Cisco SOHO 91 routers
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Cisco 831 and SOHO 91 Cabling and Setup Quick Start Guide—Provides quick installation information on the Cisco 831 and Cisco SOHO 91 routers.
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Cisco 831 and SOHO 91 Hardware Installation Guide—Provides installation information on the Cisco 831 and Cisco SOHO 91 routers.
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Cisco 836 and Cisco SOHO 96 routers
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Cisco 836 and SOHO 96 Cabling and Setup Quick Start Guide—Provides quick installation information on the Cisco 836 and Cisco SOHO 96 routers.
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Cisco 831 and SOHO 91 Hardware Installation Guide—Provides installation information on the Cisco 836 and Cisco SOHO 96 routers.
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Cisco 837 and Cisco SOHO 97 routers
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Cisco 837 and SOHO 97 Cabling and Setup Quick Start Guide—Provides quick installation information on the Cisco 837 and Cisco SOHO 97 routers.
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Cisco 837 and SOHO 97 Hardware Installation Guide—Provides installation information on the Cisco 837 and Cisco SOHO 97 routers.
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.
References to Cisco IOS Documentation Set
This guide contains several references to the Cisco IOS documentation set. You can access the desired information in the following ways:
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On the Documentation CD-ROM, select Cisco Product Documentation, select Cisco IOS Software Configuration, click on the IOS release number applicable to your installation. From there, you can browse to and review the alphabetical listings to find the feature.
•
On CCO, go to Software and Support, and select Documentation. Next, select Cisco Product Documentation, select Cisco IOS Software Configuration, click on the IOS release number applicable to your installation. From there, you can browse to and review the alphabetical listings to find the feature.
Obtaining Documentation
Cisco provides several ways to obtain documentation, 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 on the World Wide Web at this URL:
http://www.cisco.com/univercd/home/home.htm
You can access the Cisco website at this URL:
http://www.cisco.com
International Cisco web sites can be accessed from this URL:
http://www.cisco.com/public/countries_languages.shtml
Documentation CD-ROM
Cisco documentation and additional literature are available in a Cisco Documentation CD-ROM package, which may have shipped with your product. The Documentation CD-ROM is updated monthly and may be more current than printed documentation. The CD-ROM package is available as a single unit or through an annual subscription.
Registered Cisco.com users can order the Documentation CD-ROM (product number DOC-CONDOCCD=) through the online Subscription Store:
http://www.cisco.com/go/subscription
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 Networking Products MarketPlace:
http://www.cisco.com/en/US/partner/ordering/index.shtml
•
Registered Cisco.com users can order the Documentation CD-ROM (Customer Order Number DOC-CONDOCCD=) through the online Subscription Store:
http://www.cisco.com/go/subscription
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Nonregistered Cisco.com users can order documentation through a local account representative by calling Cisco Systems Corporate Headquarters (California, U.S.A.) at 408 526-7208 or, elsewhere in North America, by calling 800 553-NETS (6387).
Documentation Feedback
You can submit comments electronically on Cisco.com. On the Cisco Documentation home page, click Feedback at the top of the page.
You can e-mail your comments to bug-doc@cisco.com.
You can submit your comments by mail by using the response card 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.
Obtaining Technical Assistance
Cisco provides Cisco.com, which includes the Cisco Technical Assistance Center (TAC) Website, as a starting point for all technical assistance. Customers and partners can obtain online documentation, troubleshooting tips, and sample configurations from the Cisco TAC website. Cisco.com registered users have complete access to the technical support resources on the Cisco TAC website, including TAC tools and utilities.
Cisco.com
Cisco.com offers a suite of interactive, networked services that let you access Cisco information, networking solutions, services, programs, and resources at any time, from anywhere in the world.
Cisco.com provides a broad range of features and services to help you with these tasks:
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Streamline business processes and improve productivity
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Resolve technical issues with online support
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Download and test software packages
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Order Cisco learning materials and merchandise
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Register for online skill assessment, training, and certification programs
To obtain customized information and service, you can self-register on Cisco.com at this URL:
http://www.cisco.com
Technical Assistance Center
The Cisco TAC is available to all customers who need technical assistance with a Cisco product, technology, or solution. Two levels of support are available: the Cisco TAC website and the Cisco TAC Escalation Center. The avenue of support that you choose depends on the priority of the problem and the conditions stated in service contracts, when applicable.
We categorize Cisco TAC inquiries according to urgency:
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Priority level 4 (P4)—You need information or assistance concerning Cisco product capabilities, product installation, or basic product configuration.
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Priority level 3 (P3)—Your network performance is degraded. Network functionality is noticeably impaired, but most business operations continue.
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Priority level 2 (P2)—Your production network is severely degraded, affecting significant aspects of business operations. No workaround is available.
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Priority level 1 (P1)—Your production network is down, and a critical impact to business operations will occur if service is not restored quickly. No workaround is available.
Cisco TAC Website
You can use the Cisco TAC website to resolve P3 and P4 issues yourself, saving both cost and time. The site provides around-the-clock access to online tools, knowledge bases, and software. To access the Cisco TAC website, go to this URL:
http://www.cisco.com/tac
All customers, partners, and resellers who have a valid Cisco service contract have complete access to the technical support resources on the Cisco TAC website. Some services on the Cisco TAC website require a Cisco.com login ID and password. If you have a valid service contract but do not have a login ID or password, go to this URL to register:
http://tools.cisco.com/RPF/register/register.do
If you are a Cisco.com registered user, and you cannot resolve your technical issues by using the Cisco TAC website, you can open a case online at this URL:
http://www.cisco.com/en/US/support/index.html
If you have Internet access, we recommend that you open P3 and P4 cases through the Cisco TAC website so that you can describe the situation in your own words and attach any necessary files.
Cisco TAC Escalation Center
The Cisco TAC Escalation Center addresses priority level 1 or priority level 2 issues. These classifications are assigned when severe network degradation significantly impacts business operations. When you contact the TAC Escalation Center with a P1 or P2 problem, a Cisco TAC engineer automatically opens a case.
To obtain a directory of toll-free Cisco TAC telephone numbers for your country, go to this URL:
http://www.cisco.com/warp/public/687/Directory/DirTAC.shtml
Before calling, please check with your network operations center to determine the level of Cisco support services to which your company is entitled: for example, SMARTnet, SMARTnet Onsite, or Network Supported Accounts (NSA). When you call the center, please have available your service agreement number and your product serial number.
Obtaining Additional Information
Information about Cisco products, services, technologies, and networking solutions is available from various online sources.
•
Sign up for Cisco e-mail newsletters and other communications at the Cisco Subscription Center at:
http://www.cisco.com/offer/subscribe
•
Learn about modifications to or updates about Cisco products. Go to the Product Alert Tool to create a profile, and then choose those products for which you want to receive information. Go to:
http://tools.cisco.com/Support/PAT/do/ViewMyProfiles.do?local=en
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Order the Cisco Product Quick Reference Guide, a reference tool that includes product overviews, key features, sample part numbers, and abbreviated technical specifications for many Cisco products that are sold through partners. Go to:
http://www.cisco.com/go/guide
•
Visit the Cisco Services website to learn the latest technical, advanced, and remote services available to increase the operational reliability of your network. Go to:
http://www.cisco.com/go/services
•
Visit Cisco Marketplace, the company store, for a variety of books, reference guides, documentation, and logo merchandise at:
http://www.cisco.com/go/marketplace/
•
Purchase a copy of Cisco technical documentation on a DVD, (Cisco Product Documentation DVD) from the product documentation store at:
http://www.cisco.com/go/marketplace/docstore
•
Obtain general networking, training, and certification titles from Cisco Press publishers at:
http://www.ciscopress.com
•
Read the Internet Protocol Journal, a quarterly journal published by Cisco for engineering professionals who design, develop, and operate internets and intranets. Go to:
http://www.cisco.com/ipj
•
What's New in Cisco Product Documentation is an online publication that provides information about the latest documentation releases for Cisco products. Updated monthly, this online publication is organized by product category:
http://www.cisco.com/en/US/docs/general/whatsnew/whatsnew.html
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Access international Cisco websites at:
http://www.cisco.com/public/countries_languages.shtml