AT&T High Speed Internet Service User Manual

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Visit http://support.att.com or call Customer Service at 1.877.722.3755.
AT&T High Speed Internet Service
Self-Installation Guide for Modem Equipment
Have you checked your Service Activation date and time?
You can connect to the Internet only after the activation date and time indicated on your confirmation letter.
Do you have a security system, health alarm, or water meter monitor?
You will need special assistance. Call 1.800.ATT.2020 to schedule an appointment with a service technician.
Do you have your telephone number?
Don’t have AT&T voice service? Use your account number as your telephone number.
Are you an existing or returning AT&T Member?
You’ll need your AT&T Member ID (AT&T email address) and password.
Do you have a modem installation or back up CD?
Do not use it unless directed to do so.
Welcome! Please review before beginning your installation.
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AT&T High Speed Internet Service Specifications

General

Modem Required	Yes
Technology	DSL
Maximum Download Speed	100 Mbps
Maximum Upload Speed	20 Mbps
Equipment Included	Varies by plan
Wi-Fi	Yes
Data Cap	Varies by plan
Compatibility	AT&T network
Connection Type	DSL
Wi-Fi Standards	802.11b/g/n/ac
Ports	Ethernet

Summary

Gathering Installation Materials

Essential Equipment List

Lists essential modem, cables, and filters for AT&T High Speed Internet setup.

Installing Phone Filters

Instructions for connecting single-port filters to each phone device and wall jack.

Using Dual-Port Filters

Guidance on using dual-port filters for shared wall jacks with phone devices and modems.

Connecting Your Modem

Connecting the Data Cable

Connects the modem's DSL port to the filter or wall jack using the data cable.

Connecting the Ethernet Cable

Connects the modem to the computer using the Ethernet cable for internet access.

Connecting the Power Source

Connects the modem to a power outlet using the power adapter to supply electricity.

Powering Up the Modem

Waiting for Modem Power-Up

Monitors modem lights turning green, which may take up to 15 minutes for a successful connection.

Troubleshooting Modem Power-Up

Addresses common issues like lights not turning green or wizards appearing during modem setup.

Activating Your Account

Completing Online Registration

Guides users through the online registration process to activate AT&T High Speed Internet service.

SBC Equipment Upgrade

Provides instructions for users upgrading equipment purchased from SBC more than three years ago.

Troubleshooting: Having Trouble?

Checking Connections and Cables

Verifies proper connection and security of filters and cables for troubleshooting.

Performing a Power Cycle

Instructs to power down and then power up the modem and computer to resolve issues.

Monitoring Indicator Lights

Advises waiting for indicator lights to turn green to confirm successful internet access.

Resetting Modem to Defaults

Explains how to reset the modem to factory settings using the reset button.

Checking Modem Settings

Finding Modem IP Address

Locates the modem's IP address to access its configuration settings via a web browser.

Entering Configuration Settings

Details required PPPoE username, password, VPI, and VCI settings for modem configuration.

Specific Issues and Solutions

Security Systems and Alarms

Advises special assistance for users with security systems, health alarms, or water meter monitors.

DSL Signal Interference and Filters

Explains the need for filters to prevent static and noise on DSL phone lines.

Detecting Proxy Settings Error

Provides steps to resolve the 'Detecting Proxy Settings' browser notice by running the Connection Wizard.

Service Transition and Compatibility

Covers compatibility with cable/dial-up, upgrading from dial, and reactivating suspended service.