Project Lightspeed Overview

Chris BoyerExecutive Director - Regulatory Policy and PlanningEmerging Technologies & Services

Central Office

Copper Feeder (F1)

Copper Distribution (F2)

New Fiber From IP DSLAM To End Office

SAI

IPDSLAM

ENDUSER

Customer Premises

Fiber SAI~500 HH

PFP

1:32 Split

Fiber Feeder Fiber Distribution

ONT

Class 5Switch

ENDUSER

AT&T Project Lightspeed Access Network

Fiber To The Home - Greenfield - ~1M HH

Fiber To The Node - Brownfield - ~17M HH

GbESwitch OLT

GbESwitch

FDF - Fiber Distribution FrameSAI - Serving Area InterfaceOLT - Optical Line Terminal

GbE - Gigabit EthernetONT - Optical Network TerminalWDM - Wave Division MultiplexingPFP - Primary Flexibility Point

Acronyms:

Central Office

ServiceRouter

SBC National IPBackbone

SBC National IPBackbone

SBC National IPBackbone

SBC National IPBackbone

ServiceRouter

Video Network Architecture

• Acquires programming from providers

• Encodes content• Sends programming to

video hub offices

IP Video Operations Center (VOC)Oversees IP Video network operations

IP Video Super Hub Offices

To Customers

• Receives programming from super hub offices

• Adds local programming• Stores video on demand

programming

IP Video Hub Offices

• Distributes programming to homes

IP Serving Offices

IP Services Interactive Platform

Router

ApplicationServers

MGW

Softswitch

VoIP Platform

LocalContent

NationalContent

End User

IP Serving Office

Router/Switch

VoDDistribution

SuperHub Office

Encoder

Internet Platform

PSTNWWW

Router/Switch

A-Server

Router/Switch

VoDServer

Video Hub Office

Encoder

A-Server

Web Server

Access Network FTTN/FTTP

D-Server

Router/Switch

IntermediateOffice

D-Server

Router/Switch

AT&T Interoffice Network (Ethernet)

ENDUSER

In Home Environment

Network Interface Device

MEDIAGATEWAY

Coax Splitter

Analog Phone

Analog Phone

STB

STBCAT-5

LaptopDesktop

IP Phone

CAT-3 (Twisted Pair) (TDM Voice)

Coax (Video)

CAT-5 (Ethernet) (HSIA, VoIP)

Wi-Fi (802.11x) (HSIA, VoIP)

VoIP/WiFiEnabled Cell

Phone

Coax (All Services)

NID

Access Facility –Copper (FTTN), Fiber (FTTP)