English dropdown-ico

Cisco Systems 837 manual

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60

Go to page of

Similar user manuals

A good user manual

The rules should oblige the seller to give the purchaser an operating instrucion of Cisco Systems 837, along with an item. The lack of an instruction or false information given to customer shall constitute grounds to apply for a complaint because of nonconformity of goods with the contract. In accordance with the law, a customer can receive an instruction in non-paper form; lately graphic and electronic forms of the manuals, as well as instructional videos have been majorly used. A necessary precondition for this is the unmistakable, legible character of an instruction.

What is an instruction?

The term originates from the Latin word „instructio”, which means organizing. Therefore, in an instruction of Cisco Systems 837 one could find a process description. An instruction's purpose is to teach, to ease the start-up and an item's use or performance of certain activities. An instruction is a compilation of information about an item/a service, it is a clue.

Unfortunately, only a few customers devote their time to read an instruction of Cisco Systems 837. A good user manual introduces us to a number of additional functionalities of the purchased item, and also helps us to avoid the formation of most of the defects.

What should a perfect user manual contain?

First and foremost, an user manual of Cisco Systems 837 should contain:
- informations concerning technical data of Cisco Systems 837
- name of the manufacturer and a year of construction of the Cisco Systems 837 item
- rules of operation, control and maintenance of the Cisco Systems 837 item
- safety signs and mark certificates which confirm compatibility with appropriate standards

Why don't we read the manuals?

Usually it results from the lack of time and certainty about functionalities of purchased items. Unfortunately, networking and start-up of Cisco Systems 837 alone are not enough. An instruction contains a number of clues concerning respective functionalities, safety rules, maintenance methods (what means should be used), eventual defects of Cisco Systems 837, and methods of problem resolution. Eventually, when one still can't find the answer to his problems, he will be directed to the Cisco Systems service. Lately animated manuals and instructional videos are quite popular among customers. These kinds of user manuals are effective; they assure that a customer will familiarize himself with the whole material, and won't skip complicated, technical information of Cisco Systems 837.

Why one should read the manuals?

It is mostly in the manuals where we will find the details concerning construction and possibility of the Cisco Systems 837 item, and its use of respective accessory, as well as information concerning all the functions and facilities.

After a successful purchase of an item one should find a moment and get to know with every part of an instruction. Currently the manuals are carefully prearranged and translated, so they could be fully understood by its users. The manuals will serve as an informational aid.

Table of contents for the manual

  • Page 1

    Corporate Headquarters Cisco Systems, Inc. 170 West Tasman Drive San Jose, CA 95134-1706 USA http://www.cisco.com Tel: 408 526-4000 800 553-NETS (6387) Fax: 408 526-4100 Cisco 837 Router and SOHO 97 Router Hardw are Installation Guide Customer Order Number: DOC-781478 1= Text Part Number: 78 -14781-02[...]

  • Page 2

    THE SPECIFICA TIONS AND IN FORMA TION REGARDING THE PR ODUCTS IN T HIS MANUAL ARE SUBJECT TO CHANGE WIT HOUT NO TICE. ALL ST A TEMENTS, INFORMA TION, AND RECOMMEND A TION S IN THIS MANU AL ARE BELIEVED TO BE A CCURA TE BUT ARE PRESENTED WITHOUT W ARRANTY OF ANY KIND, EXPRESS OR IMPLIED. USERS M UST T AKE FULL RE SPONSIBILITY FOR THEIR APPLICA TION [...]

  • Page 3

    CCSP, CCVP, the Cisco Square Bridge logo, Foll ow Me Browsing, an d StackWise are trademarks of Ci sco Systems, Inc.; Changing the Way We Work, Live, Play, and Learn, and iQuick Stud y are service marks of Cisco Systems, Inc.; and Access Regi strar, Aironet, ASIST, B PX, Catalyst, CCDA, CCDP, CCIE, CCIP, CCNA, CCNP, Cis co, the Cisco Certified Inte[...]

  • Page 4

    [...]

  • Page 5

    v Cisco 837 Router and SOHO 97 Router Hardware Installation Guide 78-14781-02 CONTENTS Preface ix Obtaining Documentation xii Cisco.com xii Documentation DVD xiii Ordering Documentation xiii Documentation Feedback xiii Cisco Product Security Overview xiv Reporting Security Problems in Cisco Prod ucts xiv Obtaining Technical Assistance xv Cisco Tech[...]

  • Page 6

    Contents vi Cisco 837 Router and SOHO 97 Router Hardware Installation Guide 78-14781-02 Warnings 2-2 Preventing Electrostatic Discharge Damage 2-4 Unpacking the Box 2-5 Preventing Damage to the Router 2-6 Mounting the Router 2-7 Mounting on a T able 2-7 Mounting on a Wall 2-7 Installing the Router 2-10 Connecting Ethernet De vices 2-11 Connecting a[...]

  • Page 7

    vii Cisco 837 Router and SOHO 97 Router Hardware Installation Guide 78-14781-02 Contents Ethernet Cable Specification s A-4 Maximum Cable Distances A-4 I NDEX[...]

  • Page 8

    Contents viii Cisco 837 Router and SOHO 97 Router Hardware Installation Guide 78-14781-02[...]

  • Page 9

    ix Cisco 837 Router and SOHO 97 Router Hardware Installation Guide 78-14781-02 Preface This preface describes the audi ence for , organizatio n of, and con ventions used in this guide. It also describes rela te d documentation and tells how to access electronic documentation. Audience This guide is intended for service techni cians who ha ve no e x[...]

  • Page 10

    Preface x Cisco 837 Router and SOHO 97 Router Hardware Installation Guide 78-14781-02 Conventions This section describes the con vent ions used in this guide. Note Means reader take note . Notes contain helpful suggestions or references to additional information and material. Caution This symbol means r eader be careful . In thi s situation , you m[...]

  • Page 11

    xi Cisco 837 Router and SOHO 97 Router Hardware Installation Guide 78-14781-02 Preface War nu n g Dieses Warn symbol bedeutet Gefahr . Sie befinden sich in einer Situation, die zu einer Körperverletzung führen könnte. Bevor Sie mit d er Arbeit an irgendeinem Gerät beginnen , seien Sie sich der mit elekt rischen Stromkreisen verbundenen Gefahren[...]

  • Page 12

    Preface Obtaining Documentation xii Cisco 837 Router and SOHO 97 Router Hardware Installation Guide 78-14781-02 Related Documentation In addi tion to this Cisco 837 Routers and SOHO 97 Har dwar e Installation Guide , the documentation for the Cisco 837 and SOHO 97 routers includes the follo wing: • Cisco 837 Router and SOHO 97 Router Cabling and [...]

  • Page 13

    xiii Cisco 837 Router and SOHO 97 Router Hardware Installation Guide 78-14781-02 Preface Documentation Feedback Documentation DVD Cisco documentation and additi onal litera ture are a v ailable in a Documentation D VD package, which may have shipped with your prod uct. The Docu mentation D VD is updated regularly and may b e more current than pri n[...]

  • Page 14

    Preface Cisco Product Security Overview xiv Cisco 837 Router and SOHO 97 Router Hardware Installation Guide 78-14781-02 Y ou can submit comments b y using the response card (if present) behi nd the front cov er of your document or b y writing to the follo wing address: Cisco Systems Attn: Customer Document Or dering 170 W est T asman Driv e San Jos[...]

  • Page 15

    xv Cisco 837 Router and SOHO 97 Router Hardware Installation Guide 78-14781-02 Preface Obtaining Techn ical Assistance • Nonemergencies — psirt@cisco.com Ti p W e encourage you t o use Pretty Good Pri v acy (PGP) or a co mpatible product to encrypt any sensiti ve information that you send to Cisco. PSIR T can work from encrypted information tha[...]

  • Page 16

    Preface Obtaining Technical Assistance xvi Cisco 837 Router and SOHO 97 Router Hardware Installation Guide 78-14781-02 Access to all tools on the Cisco T echni cal Support W ebsite requires a Cisco.com user ID and password. If you hav e a v alid service contract b ut do not ha ve a user ID or password, you can re gister at this URL: http://tools.ci[...]

  • Page 17

    xvii Cisco 837 Router and SOHO 97 Router Hardware Installation Guide 78-14781-02 Preface Obtaining Additional Public ations and Information For a complete list of Cisco T A C contacts, go to this URL: http://www .cisco.com/techsupport/co ntacts Definitions of Service Request Severity T o ensure that all servi ce requests ar e reported in a standard[...]

  • Page 18

    Preface Obtaining Additional Publ ications and Information xviii Cisco 837 Router and SOHO 97 Router Hardware Installation Guide 78-14781-02 • Pa c k e t magazine is the Cisco System s technical user magaz ine for maximizing Internet and netw orking in vestments. Each quart er , Packet deli vers co verage of the latest industry trends, technol og[...]

  • Page 19

    CH A P T E R 1-1 Cisco 837 Router and SOHO 97 Router Hardware Installation Guide 78-14781-02 1 Product Overview The Cisco 837 and SOHO 97 routers are asymmeric dig ital subscriber line (ADSL)–ov er–plain old telephone service (PO TS) routing devi ces. They ha ve an integrated 4-port Ethernet switch for the LAN and an ADSL physical interface for[...]

  • Page 20

    Chapter 1 Product Overview Features 1-2 Cisco 837 Router and SOHO 97 Router Hardware Installation Guide 78-14781-02 Features Ta b l e 1 - 1 summarizes the features of the Cisco 837 and SOHO 97 routers. T able 1 -1 Feat ure Summary f or Cisco 837 and SOHO 97 Routers Feature Description 10/100B ASE-T Ethernet switch Provides co nnection to 10B ASE-T [...]

  • Page 21

    1-3 Cisco 837 Router and SOHO 97 Router Hardware Installation Guide 78-14781-02 Chapter 1 Product Overview Router Overview Router Overview The follo wing section sho ws the front and back panels of the Cisco 837 router and the SOHO 97 router . The Cisco 8 37 router and the S OHO 97 router each hav e four Ethernet port s. W all-mounting feature Brac[...]

  • Page 22

    Chapter 1 Product Overview Router Overview 1-4 Cisco 837 Router and SOHO 97 Router Hardware Installation Guide 78-14781-02 Front Panels Figure 1-1 and Figure 1-2 show the f ront panels of the Cisco 837 and SOH O 97 routers. Figure 1 -1 Cisco 837 Fr ont P anel Figur e 1 -2 SOHO 97 Front P anel OK 4 3 2 1 ADSL ETHERNET TXD RXD CD RXD TXD CISCO 800 SE[...]

  • Page 23

    1-5 Cisco 837 Router and SOHO 97 Router Hardware Installation Guide 78-14781-02 Chapter 1 Product Overview Router Overview Back Panel Figure 1-3 sho ws the back panel of the Cisco 837 router . The back pane l of the SOHO 97 router looks the same a s the back panel of the Cisco 837 ro uter . Figur e 1 -3 Cisco 837 Back P a nel 1 Ethernet port 4 conn[...]

  • Page 24

    Chapter 1 Product Overview Router Overview 1-6 Cisco 837 Router and SOHO 97 Router Hardware Installation Guide 78-14781-02 LED Functions Ta b l e 1 - 2 summarizes the functi ons of the LEDs on the Cisco 837 router and the SOHO 97 router . T able 1 -2 Fu nctions of LEDs on the Cisco 837 Rout er and SOHO 97 Router LED Color Function PWR_OK Green On w[...]

  • Page 25

    CH A P T E R 2-1 Cisco 837 Router and SOHO 97 Router Hardware Installation Guide 78-14781-02 2 Installation This chapter pro vides information on the follo wing topics: • Preparing for Installation • Pre venting Damage to t he Router • Mounting the Router • Installing the Router • Using the Router LE Ds to Check Links[...]

  • Page 26

    Chapter 2 Installation Preparing for Installation 2-2 Cisco 837 Router and SOHO 97 Router Hardware Installation Guide 78-14781-02 Preparing for Installation This section pro vides information on safety , mounting of the router , and unpacking of the ro uter box. Safety This section provides safety warnin gs and electrostatic and ro uter damage info[...]

  • Page 27

    2-3 Cisco 837 Router and SOHO 97 Router Hardware Installation Guide 78-14781-02 Chapter 2 Installation Preparing for Installation War ni n g T o avoid el ectric shock, do not connect safety extra-low voltage (SEL V) circu its to telephone-network vol tage (TNV) circuits. LAN ports c ontain SEL V circuits, and WAN po rts contain TNV circuits. Some L[...]

  • Page 28

    Chapter 2 Installation Preparing for Installation 2-4 Cisco 837 Router and SOHO 97 Router Hardware Installation Guide 78-14781-02 Preventing Electrostatic Discharge Damage Electrostatic discharge (ESD) is a transfer of elect rostatic char ge between bodies of dif ferent electrostatic potentials, such as an operator and a piece of electrical equipme[...]

  • Page 29

    2-5 Cisco 837 Router and SOHO 97 Router Hardware Installation Guide 78-14781-02 Chapter 2 Installation Preparing for Installation Unpacking the Box Ta b l e 2 - 1 lists the items that come with y our router . All these items are in the accessory kit that is inside the box that yo ur router came in. If any of the items is missing or damaged, contact[...]

  • Page 30

    Chapter 2 Installation Preventing Damag e to the Router 2-6 Cisco 837 Router and SOHO 97 Router Hardware Installation Guide 78-14781-02 Note An optional cable used for connecting a Ci sco 837 router’ s console port to an async modem is a vai lable for dial b ackup and remote management. (The SOHO 97 router does not need this cable.) Th is SOHO/80[...]

  • Page 31

    2-7 Cisco 837 Router and SOHO 97 Router Hardware Installation Guide 78-14781-02 Chapter 2 Installation Mounting t he Router Mounting the Router Y ou can mount the router on one of the follo wing surfaces: • T able or other horizontal surface • W all or other vertical surface Mounting on a Table Place the router firmly on a table, and perform th[...]

  • Page 32

    Chapter 2 Installation Mounting the Router 2-8 Cisco 837 Router and SOHO 97 Router Hardware Installation Guide 78-14781-02 Figure 2-1 W all-Mounting Brac k ets (Bott om of Router) Caution If you are moun ting the router on dryw all, use two ho llow-w all anchors (1/8-in . with 5/16-in. drill bi t, or M3 with 8-mm dri ll bit) to secure the scre ws. [...]

  • Page 33

    2-9 Cisco 837 Router and SOHO 97 Router Hardware Installation Guide 78-14781-02 Chapter 2 Installation Mounting t he Router T o mount the router , follo w the steps gi ven after Figure 2-2 . Figur e 2-2 Mounting Router on a W all 82138 OK 4 3 2 1 ECOMPUTERS T X D R X D C ISC O 800 S E R IE S 1 5 6 4 3 2 7 A D S L CD RXD TXD[...]

  • Page 34

    Chapter 2 Installation Installing the Router 2-10 Cisco 837 Router and SOHO 97 Router Hardware Installation Guide 78-14781-02 Perform the follo wing steps to mount the router on the w all: Step 1 Secure two scre ws 7 5/8 inches (19.35 cm) apart into a w all and 1/8 inch (0.3 2 cm) from the wall. Step 2 Hang the router on the screws as sho wn in Fig[...]

  • Page 35

    2-11 Cisco 837 Router and SOHO 97 Router Hardware Installation Guide 78-14781-02 Chapter 2 Installation Installing t he Router Connecting Ethernet Devices Y o u can use a cable to connect an Ethernet de vice to the router’ s LAN port . Connecting a Server, PC, or Workstation Follo w the steps gi ven after Figu re 2-3 to connect the router to a PC[...]

  • Page 36

    Chapter 2 Installation Installing the Router 2-12 Cisco 837 Router and SOHO 97 Router Hardware Installation Guide 78-14781-02 Figur e 2-3 Connecting a Server , PC, or W orkstation t o the Router 1 Cisco 837 router 4 PC 2 Y ellow Ethernet cable 5 RJ-45 port on the netw ork interface card (NIC) 3 Ethernet por t 4 ETHERNET 4 3 2 1 Cisco 837 ADSL CONSO[...]

  • Page 37

    2-13 Cisco 837 Router and SOHO 97 Router Hardware Installation Guide 78-14781-02 Chapter 2 Installation Installing t he Router Perform the follo wing steps to connect the PC to Ethernet port 4 (or to port 1, 2, or 3) on the router: Step 1 Connect one end of the yello w Ethernet cable to Ethernet port 4 on the router . Step 2 Connect the other end o[...]

  • Page 38

    Chapter 2 Installation Installing the Router 2-14 Cisco 837 Router and SOHO 97 Router Hardware Installation Guide 78-14781-02 Figur e 2-4 Connecting an ADSL Line to a W all J ack Perform the follo wing steps to connect the ADSL line to the router and a cable wall jack: Step 1 Connect one end of the ADS L cable line to the ADSL port on the router . [...]

  • Page 39

    2-15 Cisco 837 Router and SOHO 97 Router Hardware Installation Guide 78-14781-02 Chapter 2 Installation Installing t he Router Connecting a Terminal or PC to the Router’s Console Port (Optional) Y ou can connect ei ther a termin al or a PC to t he router’ s console port. Y ou can use the terminal or PC for conf iguring the software via the comm[...]

  • Page 40

    Chapter 2 Installation Installing the Router 2-16 Cisco 837 Router and SOHO 97 Router Hardware Installation Guide 78-14781-02 Perform the follo wing steps to connect the router’ s console port to a terminal o r PC: Step 1 Connect the RJ-45 connector on one end of the light blue cable to the console por t on the rout er . Step 2 Connect the DB-9 c[...]

  • Page 41

    2-17 Cisco 837 Router and SOHO 97 Router Hardware Installation Guide 78-14781-02 Chapter 2 Installation Installing t he Router Figure 2-6 Connecting the AC Adapt e r Perform the follo wing steps to connect the router to the A C adapter: Step 1 Connect one end the po wer supply cable to the router’ s input jack. Step 2 Connect the other end of t h[...]

  • Page 42

    Chapter 2 Installation Installing the Router 2-18 Cisco 837 Router and SOHO 97 Router Hardware Installation Guide 78-14781-02 Connecting the Console Port to an Async Modem The Cisco 837 router is design ed with the dial backup function, allo wing you to connect an analog modem to the console port as a back up link to the W AN port in case the ADSL [...]

  • Page 43

    2-19 Cisco 837 Router and SOHO 97 Router Hardware Installation Guide 78-14781-02 Chapter 2 Installation Installing t he Router Figure 2-7 Connecting the Consol e Por t to an Async Modem 1 Cisco 837 router 4 W all jack 2 Console port 5 T elephone 3 A v ailable port on an asy nc modem E TH ER N E T 43 2 1 Cisco 837 AD SL +1 8 V D C C O N S O LE ON OF[...]

  • Page 44

    Chapter 2 Installation Using the Router LEDs to Che ck Links 2-20 Cisco 837 Router and SOHO 97 Router Hardware Installation Guide 78-14781-02 Perform the follo wing steps to connect the Cisco 837 router’ s conso le port to an async modem: Step 1 Connect the RJ-45 end of the SOHO/800 Series Router Modem Cable to the Cisco 837 router’ s consol e [...]

  • Page 45

    2-21 Cisco 837 Router and SOHO 97 Router Hardware Installation Guide 78-14781-02 Chapter 2 Installation Using the Rout er LEDs to Check Li nks Step 2 Click the Network icon t o display the Network windo w . Step 3 V erify that TCP/IP has been added and associated with the Ethernet adapter . TCP/IP is shown as a cable icon in the Configuration wind [...]

  • Page 46

    Chapter 2 Installation Using the Router LEDs to Che ck Links 2-22 Cisco 837 Router and SOHO 97 Router Hardware Installation Guide 78-14781-02 Ti p If the CR WS home page does not appear when you enter the URL http://10.10.10.1 , test the connection between the PC and the router by doing th e follo wing: 1. Check that the OK LED on the r outer is on[...]

  • Page 47

    2-23 Cisco 837 Router and SOHO 97 Router Hardware Installation Guide 78-14781-02 Chapter 2 Installation Using the Rout er LEDs to Check Li nks Step 8 Select Start/Run , and type winipcfg in the Open field of the Run window . When the IP Config windo w appears, click Release to rele ase the PC’ s IP address. Then click Renew to rene w the PC’ s [...]

  • Page 48

    Chapter 2 Installation Using the Router LEDs to Che ck Links 2-24 Cisco 837 Router and SOHO 97 Router Hardware Installation Guide 78-14781-02[...]

  • Page 49

    CH A P T E R 3-1 Cisco 837 Router and SOHO 97 Router Hardware Installation Guide 78-14781-02 3 Troubleshooting This chapter describes symptoms of probl ems that could occur with the Cisco 837 or SOHO 97 rout ers, identif ies the likely underly ing problems, an d provid es steps for solving the problems. The probl ems are grouped as follo ws: • Pr[...]

  • Page 50

    Chapter 3 Troub leshooting Problems During First Startup 3-2 Cisco 837 Router and SOHO 97 Router Hardware Installation Guide 78-14781-02 Problems During First Startup Ta b l e 3 - 1 lists problems that could occur the firs t time you turn on the router . T able 3-1 Problems Dur in g First Startup Symptom Problem Solutions All LEDs, including OK LED[...]

  • Page 51

    3-3 Cisco 837 Router and SOHO 97 Router Hardware Installation Guide 78-14781-02 Chapter 3 Tr oubleshooting Problems After Router Is Running Problems After Router Is Running Ta b l e 3 - 2 lists problems that could occur after the router has been up and running. T able 3-2 Pro blems Aft er Router Is Running Symptom Problem Solutions Problems with Et[...]

  • Page 52

    Chapter 3 Troub leshooting Problems After Router Is Running 3-4 Cisco 837 Router and SOHO 97 Router Hardware Installation Guide 78-14781-02[...]

  • Page 53

    A-1 Cisco 837 Router and SOHO 97 Router Hardware Installation Guide 78-14781-02 APPENDIX A Specifications and Cables This appendix pro vides system, port, and cabling specif ications for the Ci sco 837 and SOHO 97 routers. System Specifications Ta b l e A - 1 outlines the system specifi cations for the routers. T able A -1 Syst em Specifications De[...]

  • Page 54

    Appendix A Sp ecifications and Cables Port Connector Pinouts A-2 Cisco 837 Router and SOHO 97 Router Hardware Installation Guide 78-14781-02 For information on re gulatory compliance, refer to the Re gulatory Compliance and Safety Information fo r Cisco 800 Series and SOHO Series Router s document that shipped with yo ur router . War ni n g Ultimat[...]

  • Page 55

    A-3 Cisco 837 Router and SOHO 97 Router Hardwa re Installation Guide 78-14781-02 Appendix A Sp ecifications and Cables Port Connector Pinouts The console port is configured as a data communi cations equipment (DCE) device. The default parameters for the console port ar e as follo ws: • 9600 baud • Eight data bits • No parity • One stop bit [...]

  • Page 56

    Appendix A Sp ecifications and Cables Cabling Specifications A-4 Cisco 837 Router and SOHO 97 Router Hardware Installation Guide 78-14781-02 Cabling Specifications This section provides specifications for the foll owing Ethernet cables, which you might need to pro vide: • Straight-throu gh cables • Cr os s over ca b le s This section also provi[...]

  • Page 57

    IN-5 Cisco 837 Router and SOHO 97 Router Hardware Installation Guide 78-14781-02 INDEX Numerics 10/100BASE-T 1-2 100BASE-T A-4 10BASE-T A-4 A AC adapter, connecting 2-16 accessory kit 2-5 adapter, included 2-5 ADSL line, connecting (fi gure) 2-13 port 1-2 altitude specifications (table) A-1 autosensing 1-1 B back panel (fig ure) 1-5 C cables includ[...]

  • Page 58

    Index IN-6 Cisco 837 Router and SOHO 97 Router Hardware Installation Guide 78-14781-02 F feature summary 1-2 Flash memory 1-2 front panel (figure) 1-4 H hardware-based encryption 1-1 humidity specifications A-1 I installati on preparing for 2-1 verifying 2-20 IPSec Hardware Accelerator 1-3 L LED functions (table) 1-6 M mounting bracket 2-8 mounting[...]

  • Page 59

    IN-7 Cisco 837 Router and SOHO 97 Router Hardware Installation Guide 78-14781-02 Index specifications cabling A-4 system A-1 startup problems 3-2 straight-throu gh cable 1-1 synchronous DRAM see SDRAM 1-2 T temperat ure specificati ons A-1 troubleshooting after router is runni ng 3-3 during first startup 3-2 U unpacking the router 2-5, ?? to 2-5 W [...]

  • Page 60

    Index IN-8 Cisco 837 Router and SOHO 97 Router Hardware Installation Guide 78-14781-02[...]