Launch T1 services on HFC –with no outside plant changes

BroadLAN™ Platform

Use existing spare fiber to deliver commercial services point-to-point

Prisma® CWDM Media Converter Platform

Deliver TDM voice and data over asingle fiber-based IP network

Prisma IP™ Platform

©2004 Scientific-Atlanta, Inc. All rights reserved.

Right now, in cities across North America, your cable networkpasses a great many of the over seven million small- tomedium-sized businesses that are potential commercialservices customers. Extract more value from your existingnetwork by offering the T1 and dedicated Internet accessthat businesses want, need and are willing to pay for.

Contact us at sales@sciatl.com or 770.236.5000

www.scientificatlanta.com

with Commercial ServicesGet Down to Business

P.O. Box 266007, Highlands Ranch, CO 80163-6007© CED magazine, November 2005www.cedmagazine.com303-470-4800 • 303-470-4890CED® is a registered trademark of Reed Elsevier Inc.CED® is not responsible for anyerrors or omissions in this chart.

Headend Fiber node Bridger Cluster tap (64-port)

Fiber cable Secondary hub Line extender 8-port tap

Coax cable Trunk or Splitter Standard tap distribution amp

Legend

Please note that some of the topologies have customized these symbols. These are labeled on the specific architectures.

www.aurora.com | 408.235.7000A whole new light, growing brighter!

Rapidly and cost effectively deliver Ethernet and hot spot service over your existing HFC network!

� Supports backhaul technologies� Based on IEEE standard 802.11� Environmentally hardened

Digitalreceiver

Digital ITUtransmitter

Digital ITUtransmitter

1550 nmtransmitter

Broadcast50-550 MHz

EDFA EDFAEDFASplitter SplitterSwitch 50 to 200 homesserved per node

Node

Node

Node

ITU

1550 1310

Passive coax serving area

Headend/primary hub

Headend to hubtransport Hub Fiber serving area Customer area

256-node service area from one hub with 1*8 DWDM narrowcast, Ethernet and digital return

BC

/NC

combiner

DW

DM

mux

DW

DM

demux

DW

DM

demux

DW

DM

mux

Wi-Fi gateway

BusinessEthernetservices

DW

DM

mux

1:2

Broadcast550-860 MHz

Upstream5-45 MHz

plus Ethernet

DownstreamEthernet

EDFA

EDFA

EDFA

Splitter Switch

Switch Splitter

Splitter Switch

1:2

1:2

1:2

1:8

Hub

LE-427access distributor

LE-327access concentrator

100 Mb servicesmedium

businesses

Multiple 100 Mbservices

small MTU

1,000 and 100 Mbservices–medium

and largebusinesses

1,000 and 100 Mbservices

large MTU

Multiple 1,000 and100 Mb serviceslarge businesses

LE-46

LE-42

LE-310

LE-311

LE-42H

LE-46H

Splice case Customer premise

End-to-end management

LE-327access concentrator

1310 nm downstreamand return path

Any topology supported LE-311v

1310 nm toHFC node

GbE connections forhub-to-headend

transport

CWDM - 10λ CWDM - 10λ

DV• Any native video backhaul, distribution or networking application• Encompasses NTSC/PAL formats from analog to high definition digital• Lossless switching of video channels between rings and aggregate spurs• High-performance optics allow single spans of >140 km

PLEXiS MFX• 400 Gigabit Ethernet transport per shelf• ITU lasers–40 channels plus CWDM• Unidirectional transmitter to receiver or bi-directional TR modules• Providing service security, monitoring and control

PLEXiS GX• Robust 10 GigE transport• High quality and reliability• Pt.-to-pt. or drop-and-continue transport of data, voice and video• Providing service security, monitoring and control

CHP headend optics platform• 1 GHz spectrum coverage• Converges 1310 nm and 1550 nm transmitters and receivers in a versatile managed platform• High density headend/hub optics platform• High feature transmitters with variable output level and high isolation dual inputs• Full spectrum and QAM transmitter models

Nodes• 1 GHz spectrum coverage• CWDM return transmitter stretches capacity of scarce fiber• Models for all applications from fully segmentable to Fiber Deep• New ValueMax HMS and AM compatible transponder

Amplifiers• 1 GHz spectrum coverage• Drop-in to legacy housings without respacing• High performance, high output, maximum reach• Robust and reliable

MPS• Distributed 10 Gigabit optical packet switch with integrated transport• Advanced bandwidth and Quality of Service (QoS) management• Enables multi-play services through residential access aggregation• SLA-based Ethernet and T-1 telephony for commercial services

Broadcasttransmitter

Remote livenews collection

Programoriginator/

broadcaster

Business servicesShared HFC

Dual protected 10 Gigintelligent carrier Ethernet network

Peer-to-peer

Optimized transport

Inter-city interconnect> 100 km

Transportto 1,600 km

Accessto 20 km

DV6000

DV6000

DV6000

DV6300

GigE

GigE

10 Gig

PLEXiSCPEQ-9802

PLEXiSCPEQ-9801

1 Gig

PLEXiSMFX

MFX

MPS

MPS

MPS

MPS

CHP

Opti Maxnodes

Flex Maxamplifiers

FastEthernet

MPS

VOD VOD

VODEdge QAM

CMTS

DistributedVOD server

Hot video cacheand ad insertion

Network-basedpersonal digital

video recorder storage

MPS

PSTN

ISP

VoIPgateway

CentralizedVOD server

and ad insertion

Routern5

n5

n5

PLEXiS MFX

PLEXiS GX

PLEXiS GX

Harmonic’s scalable WDM architecture

Masterheadend

Secondaryheadend

PWRLink1310 nm

Hub

Hub

Scalable PWRBlazernodesMAXLink Plus

1550 nm redundantheadend interconnect

METROLink DWDM

WDM analog returnor WDM 48/65 MHz

digital return

Celltowers

FLXLink commercialservices solution

100 Mbps, 1 Gbps, T-1Harmonic’s advanced FTTP architecture

MAXLink 1550 nm broadcast

GIGALight GbE narrowcast

ONT

ONTVideoserver

PON OLT orEthernet switch

Data/video-over-IP

Video-over-RF

CAT5

Coax

RF/IP STB

MAXLinkvideo OLT

Video overlaypassive optical

network

Broadcast video(analog and/or

digital)

PON orswitched Ethernet

network

Mini Bridgeramplifier

BLE line extender

Switchrouter

VODserver

D9032encoder

DNCS

DCM*

1GHz

AnalogCWDM/ITU

Tx

1 GHzGainMaker

node

Prisma II1310HDTx

Prisma IIbdrRx

Prisma IIanalog Rx

Prisma IPE-Series

Prisma IPE-Series

Prisma IPE-Series

PSTN

Internet

Videosources

VODcontent

DWDM

DWDM

PrismaIP

DWDM

SME

FiberLinXmedia

converter

FiberLinXmedia

converterCPE

BroadLAN

BroadLANCPE

Cellularbackhaul

Wireless

1 GHzGS7000

node

Surge Gap1 GHzTap

4:1 bdr

1 GHzGainMaker

Prisma IPE-Series

Prisma IPE-Series

Prisma IPE-Series

Switchrouter

Customerpremise

DWDM

DWDM

Drop andcontinueVOD

DWDM

DWDM

PrismaIP

DWDM

QAM

QPSKDS

QPSKUS

CMTS

Switchrouter

RF

signal

manager

9010decoder

DCM

Combiner

Continuummodulator

Prisma IIoptical Tx

Prisma IIoptical Rx

VODcacheserver

Adserver

Switchrouter

Master headend Digital hub Optical hub HFC

QAM

Video server

Videoinputs

ToInternet

Voicenetwork

Voice switch

Router

OLT

SplitterWDM coupler

1550 nm

1490 nm +1550 nm

1490 nm

Feederplant

GR-303+ DS-1

1310 nm

ONT

ONT

ONT

ONT

1000 nm

Central office

Upstream Downstream

1310 nm 1490 nm 1550 nm

Voice and data@ 155 to 622 Mbps

VoiceVoice and data@ 622 Mbps

Analog HDTDigital

42 MHz 550 MHz 860 MHzService assignments

PH

PH

PH

Route diverse

DWDM

Primaryring

60,000-100,000

homes passed

10,000-20,000homespassed

= Primary hub= Secondary hub

Primary ring

A

SecondaryringB

Fiberdistribution

C

Coax network

D

SH

PH

SH

SH

Comcast’s Dual Ring Star/BusThe network is best described as a scalable architecture that is configured as a dual

ring, star/bus. The primary ring (A) deploys DWDM transport to carry GigE, SONET andproprietary digital transport technology. It feeds a secondary route-diverse triple (broad-cast + narrowcast + upstream) ring using DWDM technology (B). The fiber-to-the-nodenetwork (C) feeds either scalable optical nodes for fiber-to-the-serving area (FSA; approx-imately 1,000 homes/node), non-scalable nodes (approx. 250 homes/node), or fiber-deep,where fiber is extended to mini-nodes, the last active devices. The routes with fibers feed-ing the nodes are selected so that a fiber cable cut cannot affect more than 4,000 homes.FSA’s scalable nodes feed RF buses that are limited to 300 homes passed, with each busconfigured so that it can be activated as an individual node. The mini-nodes feed, onaverage, an area of 70 to 100 homes, and are physically linked in logical groups of nomore than 600 homes.

Cox’s Ring-in-Ring (Only one ring cluster shown)The Cox Communica-

tions “Ring-in-Ring” fiberarchitecture is an integra-tion of a “dedicated” fiberring and a “loop-through”fiber ring in the same fibercable sheath that givescable operators a highlyreliable and flexible net-work for the future. Byusing diverse routing andredundant electronics, itcan provide uninterruptedvideo, voice and data ser-vice to a fiber node in theevent of a fiber or elec-tronic component failure.The dedicated ring carriesvideo, voice and data ser-vice to individual nodesfor use by residential cus-tomers, providing “broad-cast” as well as targetedservices to an individualnode. The loop-throughring interconnects the

nodes in a series fashion, and is intended for other services, as well as node segmentation,should traffic demand exceed the capacity of the node. In general, these loop-through rings areprimarily used for voice and/or data service to commercial applications such as a business oreducational establishment. The network is flexible enough to allow subdividing nodes into small-er serving areas as demand for these new services results in the need for greater bandwidth.

Aurora Networks’ Fiber Deep HFCarchitecture

Aurora’s Fiber Deep HFC architecture, an evolutionary progression of tra-ditional HFC architectures, cost-effectively provides increased bandwidth forrevenue-generating residential and business services (high-speed Internet,VOD, VoIP and Wi-Fi). Aurora’s Fiber Deep HFC architecture is optimized toeliminate all RF amplifiers and most power supplies (increasing networkreliability and reducing operational costs) by driving fiber deeper into thenetwork with typical fiber serving areas of 50 to 200 homes. Additionally, itis an ideal platform from which to deploy wireless technology to even morecost-effectively address the delivery of high-speed data to businesses andother broadcast consumers for whom wireline solutions are not practical.

Services are delivered via a combination of broadcast and narrowcasttechnologies. With Aurora’s patented and fully managed digital return tech-nology, subscriber signals are digitized and multiplexed with Ethernet trafficfor transport at 1310 nm or DWDM 1550 nm wavelengths. Nodes can bedaisy-chained, sharing a common return channel, permitting concatenationof all digitized signals of the chain into a single fiber return channel fortransport to the hub. As bandwidth needs grow, daisy-chains can be short-ened and/or eliminated, and discrete digital reverse data streams can bemultiplexed onto a common fiber, allowing each RF leg of a single node tohave a dedicated virtual reverse path to the headend without the need forlarge numbers of additional return fibers. Moreover, at the hub, the highlysegmentable return architecture enables multiplexing of all DWDM wave-lengths for transport to the headend.

World Wide Packets’ MSO active Ethernet commercial services access network

World Wide Packets is a provider of carrier Ethernet solutions that enable a new level of speedand agility in the deployment of revenue-generating Ethernet services. With World Wide Packets’LightningEdge product family, which significantly increases the speed and deployment ofEthernet services, carriers can address the demands of their growing subscriber base by fullyleveraging the power, flexibility and low cost of Ethernet technology, while reducing the CapExand OpEx of existing legacy networks. World Wide Packets offers the QoS, scalability, reliabilityand manageability necessary to making carrier Ethernet services such as IPTV, VoIP and mission-critical data a reality.

The World Wide Packets LightningEdge solution, with or without the CWDM capabilities, consistsof LightningEdge access portals, access concentrators and access distributors, all managed andcontrolled by the LightningEdge Network Supervisor (LENS). Any LightningEdge product can bedeployed with any other product in the line, or any other Ethernet service element, to enable inte-grated, flexible and cost-effective delivery of services to residential or business subscribers.

Motorola’s Multiservice Broadband architecture

Motorola’s network solutions support the “quad play” of services–video, voice, dataand cellular communications.

The Motorola Multiservice Wavelength Transport (MWT) family of products collapsestransport and switching functionality into one unified platform that is tailored for cost-efficiency and density. It provides both the DWDM and CWDM solutions necessary tooptimize infrastructure investments and deliver new services. The MWT portfolioincludes the MWT 4000, which offers a multitude of high-density optical add/drop multi-plexer (OADM) configurations, and the Ethernet Aggregation (EA200) high-performance10 Gbps optical transport technology for cost-effective VOD transport.

Once the video traffic arrives at its intended destination, the Motorola OmniStar GX2optical broadband transmission platform, coupled with the company’s optical nodes,provide access transport to the individual serving areas. At that point, Motorola’sStarline amplifiers and full-featured taps distribute the payload to end users.

The MWT family is complemented by the Motorola Multiservice Broadband Transport(MBT) platform, which leverages the inherent robustness and fault tolerances ofEthernet and SONET/SDH technologies. Having the capability to accept multiple formats(Ethernet, TDM) the MBT has a robust transport mechanism capable of handling today’sincreased service needs–high-speed cable modem and VoIP backhaul traffic fromMotorola’s carrier-class Broadband Services Router (BSR 64000) CMTS/edge router.

Motorola’s Multiservice Enterprise Access (MEA) family of products supports trans-port of aggregated TDM telephony and high-speed data services from the business loca-tion to the system operator’s hub or headend–using high-speed T-1 or Ethernet links.The MEA’s low latency and T-1/E-1 capabilities enable the MSO to provide wireless carri-ers with a future-proofed, high-quality/lower cost alternative for their backhaul needs.

C-COR’s fiber topology

RBOC RFP PON*The specific PON (passive optical network) in the RFP is an ITU G.983, the BPON. The

diagram describes this PON. In the optical domain, the PON uses 1310 nm and 1490 nmwavelengths (upstream and downstream, respectively) to carry voice and video signals. Inthe electrical domain, these use an ATM signal as the bearer protocol, but are capable of avariety of voice and data TDM signals. The downstream ATM signal is at 622 Mbps, and theupstream signal can be from 155 Mbps up to 622 Mbps.

The video (downstream broadcast) is carried via an overlay at 1550 nm. This wavelengthcan carry a full complement of analog, digital and digital HDTV signals. The BPON uses theATM protocol to assign bandwidth to users as needed. It is capable of providing a range ofservices, including analog video (standard cable frequencies), digital video, voice telepho-ny, xDSL, 10/100 Mbps Ethernet, etc.

The ATM protocol has a “built-in” set of OAM (operation, administration and mainte-nance) features. These include bit error rate monitoring, alarms, automatic discovery andvarious security features.

*Originally filed in 2003. Source: B&C Consulting Service and IGI Consulting Inc.

Harmonic’s network solutions foradvanced services

Harmonic’s flexible fiber architecture uses the latest in WDM (wave divisionmultiplexing) technology to leverage the existing outside plant, minimize oper-ating expenses, and deliver a full range of residential and commercial services.Harmonic’s MAXLink Plus 1550 nm transport system enables headend consoli-dation over distances of 150 km or more, reducing the operating costs of sec-ondary or remote headends while allowing operators to get the most out oftheir capital equipment budgets. The complete lineup of broadcast television istransmitted over the video backbone to each hub using Harmonic’s MAXLink1550 nm solution. Data, VoIP and VOD content are carried on DWDM wave-lengths from the headend to hubs using Harmonic’s GIGALight gigabit Ethernettransport solution. In the last mile, Harmonic’s PWRLink 1310 nm andMETROLink DWDM transmitters efficiently deliver the full range of content andservices to scalable PWRBlazer optical nodes. As demand increases, nodescan be segmented to support up to four service areas using Harmonic’s fullrange of dedicated analog and digital return path transmitters that are based onCWDM and DWDM technology, including a 65 MHz digital solution. In addition,Harmonic’s FLXLink Commercial Services Solution is ideal for providing high-speed network access and managed services to commercial entities for a vari-ety of applications, including cell tower backhaul.

Use of an RF video overlay is a cost-effective way for operators to significant-ly increase fiber capacity, and deliver video over a passive optical network (PON)or a switched Ethernet fiber-to-the-home (FTTH) network.The operator can provi-sion the RF overlay for analog-only subscribers or send hundreds of simultane-ous HD streams into each home. Bandwidth and switching requirements of theIP network are also significantly reduced as broadcast television services do notconsume bandwidth allocated for data and voice services. A hybrid RF/IP set-topbox can be used to give viewers a seamless experience of digital and/or analogbroadcast video-over-RF as well as interactive video-over-IP.

Scientific-Atlanta’s network architectureThis architectural approach optimizes both transport and access networks to support digital simulcast, ad and program

insertion, switched digital broadcast, video-on-demand (VOD), high-speed data (HSD), voice (VoIP), wireless mesh and com-mercial services applications to deliver the highest network performance and future scalability.Today’s network engineersare challenged to construct systems that can offer new services, compete in non-traditional and yet-to-be-defined markets,and increase value for MSO shareholders. *DCM = Digital content manager

NodeA

NodeB

Rx RxDLC DLC

Hea

dend

Node A - dedicated

Node B - dedicated

Broadcast backup - loop through

Digital - loop through

2 node ring-ring schematic

Hub interconnect

Ring A

Ring B

4 fibers per node (i.e., 2 fibers each dedicated to routing signals from both directions to each node for route diversity), plus 12 fibers threaded through all nodes.