Page 2 - Introduction 1
T ABLE OF C ONTENTS Introduction 1 Cable Modem Features 1 Before You Begin 3 Contacting Your Local Cable Company 3Preparing Your Workspace 5You Will Need These Items 5Configuring the TCP/IP Protocol on a Windows PC 6Configuring the TCP/IP Protocol on a Macintosh PC 8 Hardware and Software Installati...
Page 3 - Regulatory Information and Limited Warranty 29
Regulatory Information and Limited Warranty 29 Manufacturer’s Declaration of Conformity 293Com Corporation Limited Warranty 32
Page 4 - NTRODUCTION; Cable Modem Features; * Please note that the following factors
I NTRODUCTION 1 Congratulations! You have just purchased amodem that features a pioneering newtechnology. 3Com, a leader in networkingand data access, is proud to offer you thistechnology that makes Internet accesspossible at speeds previously onlyimagined! This external cable modem is one part of a...
Page 8 - Preparing Your Workspace; Your cable company; You Will Need These Items; Cable modem
B EFORE Y OU B EGIN 5 Preparing Your Workspace • Position your computer so that it islocated near your cable outlet. • The cable modem should be located nearyour computer and the cable outlet.There should be plenty of room to guidethe cables away from the modem withoutcrimping the cables. • The mode...
Page 9 - Fold-out Quick Installation Guide
B EFORE Y OU B EGIN 6 • Fold-out Quick Installation Guide • This User’s Guide & Reference Not Included: • A PC running Windows 95 (or later) or a Macintosh running System 7.5 (or later) with TCP/IP protocol installed(see the following two sections for moreinformation on installing TCP/IP) • ...
Page 10 - If you need to install a
B EFORE Y OU B EGIN 7 NOTE: If you need to install a network interface card to give yourcomputer Ethernet capability but havenot yet done so, perform this operationfirst by consulting your NIC installationmanual and then return here tocomplete installation of the TCP/IPsoftware. 1. Click Start, poin...
Page 12 - Exit out of all open windows.
B EFORE Y OU B EGIN 9 If you do not see this icon, you mustreinstall your Macintosh systemsoftware and add networking support.Consult your Macintosh User Manualfor more information on how to do this. 4. Exit out of all open windows. 5. Your cable company may provide youwith additional TCP/IP setupin...
Page 14 - Before installing your; Wall-Mount Installation; Before wall-mounting the
H ARDWARE AND S OFTWARE I NSTALLATION 11 NOTE: Before installing your modem, write its serial number in thespace provided on the first page of thismanual. (You’ll find the serial numberabove the bar code on the white stickeron the back of the modem and on theoutside of the modem’s box.) If youever c...
Page 16 - Desktop Installation
H ARDWARE AND S OFTWARE I NSTALLATION 13 20" [ 50 cm ] INSTR UCTIONS FOR WALL-MOUNTING THE CABLE MODEM Wall-mounting T emplate See other side f or basic instr uctions . For complete instr uctions , see the User's Guide & Ref erence . ® If you have not already done so, turn to“Connecting the ...
Page 17 - To remove a clip, hold the
H ARDWARE AND S OFTWARE I NSTALLATION 14 securely stack your cable modem with theOfficeConnect unit(s). If possible, yourcable modem should always be the top unitin a stack with OfficeConnect products.Small hubs are the only units that should beclipped to the top of a cable modem. Followthese instru...
Page 18 - Before you unplug any cords,
H ARDWARE AND S OFTWARE I NSTALLATION 15 Connecting the Cable Modemto Your Computer TIP: Before you unplug any cords, label them or make a sketch of howthey are connected. This can be helpfulwhen you plug them back in later. CAUTION: To avoid risk of electric shock, make sure yourcomputer and all pe...
Page 19 - Turn off your computer and unplug it from the electrical outlet.
H ARDWARE AND S OFTWARE I NSTALLATION 16 NOTE: Refer to the diagram on the following page while following these steps. 1. Turn off your computer and unplug it from the electrical outlet. 2. Using the following illustration as a guide, make the following connections: • Connect your cable line to the ...
Page 21 - Installing the Cable; Connections
H ARDWARE AND S OFTWARE I NSTALLATION 18 13 2 12 3 11 4 10 5 9 6 8 7 15 25 85 30 80 45 75 50 70 55 65 60 RJ-45 cable(to NIC) cable outlet Cable Mode m PC Link Cable Status Powe r Status Activity Activity FCN power supply cable(to wall outlet) 3Com U.S. Robotics Cable M odem CMX Installing the Cable ...
Page 23 - LED STATE
C ABLE M ODEM O PERATION 20 1. Cable Modem Power - Indicates power is applied to the cable modem. This light is solidgreen when the modem is on. 2. Cable Modem Status - This LED varies in color (orange and green) and indicates themodem’s status as described in the following chart: LED STATE SHORT OF...
Page 26 - PROBLEM
T ROUBLESHOOTING AND S UPPORT R ESOURCES 23 PROBLEM I cannot access myemail or Internetservice. The Cable StatusLED never stopsblinking. POSSIBLE SOLUTION 1. Check all connections. Make sure the cable line is securely connected tothe cable jack on the back of the modem. Verify that the RJ 45 cable i...
Page 28 - Support Resources
T ROUBLESHOOTING AND S UPPORT R ESOURCES 25 Support Resources 3Com BBS Dial the 3Com BBS, 847-262-6000, usingthe communications software of yourchoice. Internet FTP Our ftp site provides a free librarycontaining the same files as the BBS site.FTP to ftp.usr.com. Internet on Demand Our Internet on De...
Page 29 - 0-Day Free Installation Support; Hotline
T ROUBLESHOOTING AND S UPPORT R ESOURCES 26 90-Day Free Installation Support 3Com offers free 90 day installationsupport for this product. Please call thefollowing toll-free number. 90-Day Free Installation Support888-877-5040 After the 90 day limit, refer to our pay-per-call options below. Technica...
Page 32 - this device may not cause harmful
R EGULATORY I NFORMATION AND L IMITED W ARRANTY 29 Manufacturer’s Declaration ofConformity 3Com3800 Golf RoadRolling Meadows, IL 60008U.S.A. declares that the product U.S. RoboticsCable Modem CMX conforms to the FCC’sspecifications: Part 15:Operation is subject to the following twoconditions: (1) th...
Page 33 - Export Notices
R EGULATORY I NFORMATION AND L IMITED W ARRANTY 30 Export Notices • Unlawful to export from the US orCanada without an approved USDepartment of Commerce exportlicense. • The hardware contained in this productcontains encryption software which maynot be exported or transferred from theUS or Canada wi...
Page 34 - UL Listing/CUL Listing
R EGULATORY I NFORMATION AND L IMITED W ARRANTY 31 Cet appareil numérique respecte les limitesde bruits radioélectriques applicables auxappareils numériques de Classe B préscritesdans la norme sur le matériel brouilleur:Appareils Numériques, NMB-003 édictéepar l'Industrie Canada. UL Listing/CUL List...