Arris Touchstone CM820 User Manual

Touchstone
®
CM820 Cable Modem
User’s Guide
Get ready to experience the Internet’s express lane! Whether you’re checking out
streaming media, downloading new software, or checking your email, the Touch-
stone CM820 Cable Modem brings it all to you up to eight times faster than stan-
dard DOCSIS 2.0 cable modems.
The Touchstone Cable Modem provides an Ethernet connection for use with either
a single computer or home/office Local Area Network (LAN).
Installation is simple and your cable company will provide assistance to you for any
special requirements. The links below provide more detailed instructions.
Safety Requirements
Getting Started
Installing and Connecting Your Cable Modem
Configuring Your Ethernet Connection
Using the Cable Modem
Troubleshooting
Glossary

Arris Touchstone CM820 Specifications

General

DOCSIS	3.0
Downstream Channels	8
Upstream Channels	4
Ethernet Ports	1
Gigabit Ethernet	Yes
Max Download Speed	343 Mbps
Max Upload Speed	131 Mbps
Product Type	Cable Modem
Weight	1.2 lbs
Compatible ISPs	Comcast, Cox, Spectrum

Summary

Safety Requirements

General Safety Precautions

General warnings for safe operation, cleaning, and environmental factors.

Electrical and Environmental Safety

Precautions regarding water, storms, ignition sources, and power supply.

Grounding and Installation Standards

Requirements for coaxial cable grounding and installation codes.

FCC Part 15 Compliance

European Compliance

Energy Consumption

Getting Started

About Your New Cable Modem

Introduces the CM820's features and compliance.

What's in the Box?

Lists all components included in the modem package.

Items You Need

Coaxial Cable Requirements

Specifies type and connectors for the coax cable.

Optional Splitter and Wall-Mounting

Details splitter use and hardware for wall mounting.

Getting Service

System Requirements

Recommended Hardware Configuration

Details minimum CPU, RAM, HDD, and Ethernet specs.

Operating System Compatibility

Lists supported Windows, MacOS, and Linux versions.

About this Manual

Ethernet Connection Overview

Explains the basic Ethernet connection concept.

What About Security?

Installation and Setup

Installing and Connecting Your Cable Modem

Prerequisites and overview for connecting the modem.

Hardware Overview

Details front panel indicators and rear panel connectors.

Mounting the Cable Modem

Instructions on wall or desktop mounting.

Connecting the Cable Modem

Step-by-step guide for physical connections.

Ethernet Configuration

Configuring Your Ethernet Connection

Steps to set up TCP/IP settings for various operating systems.

TCP/IP Configuration for Windows

Detailed steps for Windows 2000, XP, Vista, and 7 TCP/IP setup.

TCP/IP Configuration for MacOS X

Detailed steps for MacOS X TCP/IP setup.

Usage and Indicators

Using the Cable Modem

General guidance on operating the modem.

Indicator Lights Guide

Explains the modem's status indicator lights.

Using the Reset Button

Instructions on how and when to use the reset button.

Troubleshooting

Power Light Issues

Steps to resolve when the modem's power light is off.

Internet Connection Problems

Troubleshooting steps for no internet access or slow speeds.

Glossary

Common Networking Terms

Definitions of key terms like DOCSIS, Ethernet, DHCP, DNS, etc.