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®
U.S. Robotics Cable
Modem TMX
Getting Started Guide
http://www.3com.com/
Part No. 10031161
Published February 2000
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3Com Corporation 3800 Golf Rd. Rolling Meadows, IL 60008 Copyright © 2000 3Com Corporation. All rights reserved. No part of this documentation may be reproduced in any form or by any means or used to make any derivative work (such as translation, transformation, or adaptation) without written permission from 3Com Corporation. 3Com Corporation reserves the right to revise this documentation and to make changes in content from time to time without obligation on the part of 3Com Corporation to p
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CONTENTS 1 BEFORE YOU BEGIN Introduction 1 Cable Modem TMX Features 1 Contacting Your Broadband Service Provider (BSP) 2 Preparing Your Workspace 3 You Will Need These Items 4 Configuring the TCP/IP Protoco l5 Configuring the TCP/IP Protocol on a Windows P C5 Configuring the TCP/IP Protocol on a Macintosh P C7 2 HARDWARE INSTALLATION Wall-Mount Installation 11 Desktop Installation 13 Stacking Installation with OfficeConnect Products 14 Connecting the Cable Modem to Your Computer 15 3 CABLE MODEM
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Message Log 33 Interpreting Your Cable Modem's LED Lights 34 Upgrading to CMX Functionality 35 4 TROUBLESHOOTING AND SUPPORT RESOURCES Troubleshooting 37 The analog modem does not dial my cable company’s server properly. 37 My computer went into “power save” mode. When it came out of power save mode, my screen was frozen. 37 I see a delay when loading Web pages or downloading files (Mac users only). 38 I cannot access the 149.112.50.65 URL after disconnecting from my BSP .38 The Cable Status
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Governing Law 47 6 WALL-MOUNTING TEMPLATE
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BEFORE YOU BEGIN 1 Introduction This guide provides all the information you need to use your Cable Modem TMX and an analog modem to dial into one-way Broadband Service Providers (BSPs). Not all cable companies and BSPs provide two-way service. In the event that you have a one-way cable provider or BSP, you need to use an analog modem to send data to the provider, and then receive data from the provider over the cable line using a cable modem like the TMX. BSPs who currently offer one-way s
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2 CHAPTER 1: BEFORE YOU BEGIN Plug and play operation ensures easy setup and installation 3Com’s extensive user support organizations and our 5-year limited warranty * Please note that the following factors affect the speeds you may experience: Your computer equipment and configuration, including the speed of your processor, the amount of RAM on your system, and your available hard disk space. The Internet browsing, e-mail, or other programs you run at the same time, which use you
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Preparing Your Workspace 3 The modem’s model number (located on a sticker on the bottom of the modem). MAC address: EA = __________________ Model number: 3CR292B-TR56 You should now contact your BSP and verify the following: You have cable service to your home that supports cable modem access. If your BSP does not provide cable modem access, the 3Com U.S. Robotics Cable Modem TMX will not be able to communicate with your BSP’s Internet access service. Visit the following URL for addit
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4 CHAPTER 1: BEFORE YOU BEGIN Do not stack anything on top of the cable modem. (See the instructions on page 14 concerning stacking this modem with 3Com OfficeConnect products.) The temperature in the room where the cable modem will be operating should be between 0 and 40°C (32 and 104°F). Relative humidity should be between 5 and 95%, non-condensing. Familiarize yourself with all of the materials in this box. Please read these installation instructions thoroughly before installing
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Configuring the TCP/IP Protocol 5 the slot. If you are using wood screws, use #6 pan heads or equivalent. Configuring the TCP/IP Protocol NOTE: If you are using a Macintosh computer, turn to the instructions on page 7. Configuring the TCP/IP Protocol on a Windows PC You need to make sure that either an active Ethernet port, Ethernet Network Interface Card (NIC), or an active USB port and the TCP/IP communications protocol are installed on your system before you install your cable modem. Co
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6 CHAPTER 1: BEFORE YOU BEGIN 6 "TCP/IP" will appear in the list of installed network components. Click OK. 7 Windows will now ask you if you would like to restart your computer. Click No. 8 Right-click on the Network Neighborhood icon on your desktop then click Properties in the drop-down menu that appears. 9 Double-click the entry in the "Configuration" menu that reads "TCP/IP -->" followed by a description of your NIC or dialup adapter. 10 Click the “Advanced” tab and then make sure the
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Configuring the TCP/IP Protocol 7 15 Click the Renew button. Numbers will replace the zeros. Click OK and turn to "Hardware and Software Installation" (page 11). NOTE: The numbers on your screen SHOULD be different than those shown in the following example. Configuring the TCP/IP Protocol on a Macintosh PC You need to make sure that the TCP/IP communications protocol is installed on your system before you install your cable modem. 1 Click the Apple icon in the upper left corner of the Find
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8 CHAPTER 1: BEFORE YOU BEGIN 2 Click Edit on the Finder (gray bar) at the top of the screen. Scroll down to the bottom of the menu and click User Mode. 3 Click the Advanced button then click OK. 4 Click the Up/Down selector arrows (to the right of “Connect Via”) and click "Using DHCP Server". 5 Click the Options button. Then click the Active button. NOTE: In some cases, the Load only when needed button will not appear. If it is visible, click the box. A check mark should appear in the box
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Configuring the TCP/IP Protocol 9 6 Verify that the “Use 802.3” box is unchecked (circled in the following image). If there is a check mark in the box, click it to remove the check mark. Then click the Info button in the lower left corner. 7 Ensure there is a Hardware Address listed in this window. If there is, click the OK button and close the “TCP/IP Control Panel” (click File and scroll down to click Close). If there is no Hardware Address, you must shut down and power off your compute
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10 CHAPTER 1: BEFORE YOU BEGIN Hardware Address, please contact your local Apple authorized dealer or Apple support.
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HARDWARE INSTALLATION 2 NOTE: Before installing your modem, write its serial number in the space provided on the first page of this manual. (You’ll find the serial number above the bar code on the white sticker on the back of the modem and on the outside of the modem’s box.) If you ever call our customer support department, a representative will ask you for the serial number. This will help to identify your modem. Before you begin installing the cable modem hardware, you need to determine
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® 12 CHAPTER 2: HARDWARE INSTALLATION mounting holes These slots fit over the heads of wall-mounting screws to secure the modem to the wall. 1 Remove the mounting template from this Guide. 2 Place the mounting template against the wall at the location chosen for the cable modem. The template should be parallel to and at least 20 inches (50 cm) from the floor. Insert pushpins through the template cross hairs into the wall to mark the locations for the screws. 3 Secure the mounting screws in
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® Desktop Installation 13 20" [ 50 cm ] If you have not already done so, turn to “Connecting the Cable Modem to Your Computer” (page 15) to complete your installation. Desktop Installation If you plan to place your modem on a flat surface, you can use the four self-adhesive rubber feet included in your modem’s package to prevent your modem from sliding around. Stick the feet to the marked areas at each corner of the underside of your modem. Turn to “Connecting the Cable Modem to Your Com
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14 CHAPTER 2: HARDWARE INSTALLATION Stacking Installation with OfficeConnect Products If you own 3Com OfficeConnect products, you can use the four stacking clips included in your modem’s package to neatly and securely stack your cable modem with the OfficeConnect unit(s). If possible, your cable modem should always be the top unit in a stack with OfficeConnect products. Small hubs are the only units that should be clipped to the top of a cable modem. Follow these instructions to clip your
