DSL Internet Service High-Speed, High-Bandwidth Internet Access Helps Enable Business Growth

AT&T Business DSL Internet Service offersbroadband access over AT&T’s reliable andextensive IP backbone As your business grows, so does your need toconnect to the Internet quickly and efficiently,to gather and convey information, as well asto communicate and provide a direct link toyour business partners. As your use of theInternet expands, and the demands on yourbusiness increase, DSL (Digital Subscriber Line)technology will provide you with a fast,dedicated connection to the Internet.

This high-speed access connection is “dedicated,”always available; there's never a busy signal. DSL gives your business high-bandwidthInternet access at a fraction of the cost of TI-based access. That’s because DSL dramatically

reduces the circuit access charges and allowsfor traffic aggregation across a large numberof customers.

AT&T DSL Internet Service offers a range of DSLsolutions to meet a variety of needs, from thesmall business with a handful of employees tothe large corporation that's connectingtelecommuters and branch offices.

Counting the DSL BenefitsAT&T offers DSL Internet Service in most majormetropolitan areas nationwide, making theservice readily available as a lower-priced,high-bandwidth Internet access option. That means a cost-effective investment thatcan bring your users access speeds from 144 Kbps to 6.0 Mbps – significantly fasterthan analog modems.

BENEFITS

• Boosts your connection atspeeds significantly faster thananalog modems to enablebroadband applications such asemail, VoIP, video, web searchand file transfers

• Nationwide coverage

• Provides high-speed remoteaccess to your WANenvironment, includingconnections to intranets

• Allows you to perform robustvirtual private networking

• Provides you the economicadvantage of a low monthly fee for service

FEATURES

• Twenty Free Hours – AT&Tprovides twenty (20) free hoursof AT&T Business Internet DialService with every AT&TBusiness DSL line

• Robust IP Backbone – trafficrides over the AT&T IPBackbone, which consists ofCoast-to-Coast OC 192 circuits

• National Coverage

• Voice over IP (VoIP) – providesa low cost access solution forVoice services in a smallbusiness environment

P R O D U C T B R I E F

Copper Loop (POTS) connect Router/Bridge to DSLAM,ATM PVC from DSLAM to ATM switch, and ATM switchto Edge Router then to AT&T Common IP Backbone.

CLEC Regional Data Center

CLEC Cage in ILEC CO

ATM over DS3

ATM over DS3

CLEC Cage in ILEC CO

ADSL/Single IP IDSL

CustomerPremises

CLEC

DSL Copper Loop

AT&T Node

Router

SDSL/Multi IP IDSL

IDSLBridge

ADSLBridge

ATM Switch

DSLAM

DSLAM

LAN

New YorkChicagoLos AngelesDallasAtlantaSan Francisco

JuniperERX 1440 Edge RouterATM

DS3OC3

ATM DS3OC3 AT&T

IP CBB

NAT

DSL Business IP Network Architecture

You can benefit from AT&T DSL InternetService if you operate:

• A small business, remote or home office using analog dial Internet accessand need higher bandwidth – but can’tjustify the higher cost of ISDN or private-line access

• A small to mid-size business running 56Kbps private-line or ISDN Internet access

• A medium or large business withfractional TI Internet access

You can e-mail, research on the web, streamaudio and video, connect to Intranets,transfer large amounts of data and performmany other tasks only capable through highspeed Internet access. You may also chooseto provide and manage Voice over IP (VoIP)over AT&T Business DSL.

No matter what size business you run, AT&Tcan handle installation of the DSL router on your premises, provision the service andprovide ongoing maintenance. AT&T DSLInternet Service provides you with an end-to-end solution, with one bill and one point-of-contact.

Managing the DSL ServiceOnce your DSL service is up and running,you'll receive support from AT&T. This suppliesyou with a single toll-free number to call fortrouble-reporting, billing inquiries, changingbandwidth, technical questions about yourservice capabilities and any other life-cyclemanagement queries.

AT&T DSL Customer Care is available 24hours a day, 7 days a week, 365 days a yearfor provisioning and maintenance issues at 1-877-937-5288 (1877-XDSLATT). PremiumCustomer Care for Government accountswith US Based Customer Care Center – AT&TDSL Customer Care is available 24 hours aday, 7 days a week, 365 days a year forprovisioning and maintenance issues at 1-888-337-9438.

Bringing Business Services Right to Your BusinessAT&T DSL Internet Service further expandsour already impressive breadth of businessservices, while it deepens our commitment to bringing you local broadband accesstechnologies at competitive prices. It providesan extremely efficient means for businesses,particularly growing businesses, to takeadvantage of high-speed Internet accesswithout the high costs. And it opens an easy evolutionary path to other broadbandservices that can result in even more excitingbusiness growth.

At the same time, DSL Internet Service allowsyou to utilize the infrastructure, scale andreliability of the AT&T network and the expertiseand experience of AT&T – so you canconcentrate on the growth of your business.

For more information contact your AT&T Representative or visit us at www.att.com/business.

Product Brief - DSL Internet Service __________________________________________________________________________________________________________ 2

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