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)