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A whole new light, growing brighter!A whole new light, growing brighter!

Confidential / Proprietary Data

FTTP / RFoG / RFPON FTTP / RFoG / RFPON Architecture & Implementation Architecture & Implementation

Confidential / Proprietary Data2

Strategic Product FocusStrategic Product Focus

Technology Generations

Backbone

Regulatory Network

FTTP

HFC

Fiber Deep

Support R&D

Focu

s

Fib

er

Dep

th


RFoG Vs. IPTVRFoG Vs. IPTV

Why Not IPTV?

Standards are not fully developed

Headend equipment is expensive

and subject to change as the

standards evolve

New MPEG 4 set top boxes

needed in the Customer’s

premise

“Back office” support does not

yet exist at the cableco

Workforce has little if any

experience in the IP domain

Why RFoG?

Uses the headend technology

already in place

Uses the set top boxes already in

place

Uses the DOCSIS platforms

already in place and supports

DOCSIS 3

Simply replaces what would be

the traditional RF node

No “back office” changes are

needed. “Business as usual”

Little workforce training is

needed


Return can be transmitted at 1310 or 1610* nm

– 1310 nm is a lower cost solution today

– 1610 nm is the GPON friendly solution

• Compatible with PON standards

– PON standards support 1490 nm downstream, 1310 nm upstream

RFoG SpectrumRFoG Spectrum

Analog TV Digital TV HSD/VoD HSD/VoD

DOWNSTREAM @ 1550 nm

UPSTREAM @ 1610 nm

54 MHz 550 MHz 1 GHz 5 42 MHz


RFoG Reference DesignRFoG Reference Design

Fiber all the way to the home

Broadcast Tx EDFA

Analog RPR RFPON

CPE

Splitter

WDM

1550 nm

1610 or 1310 nm

10-20 km


Evolutionary FTTxEvolutionary FTTx

Headend

ring

New service

area

VHUB can be optimally placed

inside neighborhood or business park


RFoG Node ConfigurationRFoG Node Configuration

24 dBm output EDFA (21 dBm x2)

Integrated downstream split / upstream 1310 (or 1610) filter

Dual Quad channel analog return Rx

Digital upstream to the headend

– Can be up to 80 KM HE to Home

– Can mux up to 15 CWDM RFoG nodes on a single fiber or 40 DWDM


Micro-node SpecsMicro-node Specs


Simple RFoG DesignSimple RFoG Design

Same Downstream Tx as HFC nodes

Same Upstream Rx as HFC nodes RFoG node replaces traditional

HFC node

All parts are available for shipment

today

Same Upstream Tx used in HFC

nodes

CPE device takes in fiber, output is “F”

– Indoor or side of house solutions

– Two-way CPE

• Broadband downstream receiver

• Low cost return laser @ 1310 or 1610nm

Interfaces seamlessly with

– Installed STBs

– Installed cable modems

– Installed eMTAs


Hybrid BC/NC RFoG DesignHybrid BC/NC RFoG Design

Add NC Tx for up to 300 MHz of

dedicated bandwidth

Share 1550 BC Tx with 16 (or more)

RFoG/HFC nodes


RFoG Fiber ManagementRFoG Fiber Management

Options exist from many respected manufactures

Fiber distribution can be organized in a star or distributed star architecture

Contact your distributor for the best solutions for your application


RFoG Capital ExpenseRFoG Capital Expense

HFC / FD / RFoG Cost per HP (0% take rate) HFC / FD / RFoG Cost per HP (65% take rate)

$0

$100

$200

$300

$400

$500

$600

$700

$800

$900

$1,000

Aerial Underground

HFC N+4 FD (HFC N+0) RFoG

$0

$100

$200

$300

$400

$500

$600

$700

Aerial Underground

HFC N+4 FD (HFC N+0) RFoG

Population Density:– Suburban areas with ~80 HHP/mile

Infrastructure vs. Total Cost:– Infrastructure and total cost for HFC N+4 and N+0 stay constant at different

take out rate (except for variable cost and some cost of drop install if not included)

– Total costs for RFoG increase with increase in take out rate (due to CPE cost)


RFoG Capital ExpenseRFoG Capital Expense

High, Mid & Low Density Cost per HP (0% take rate) High, Mid & Low Density Cost per HP (65% take rate)

$0

$200

$400

$600

$800

$1,000

$1,200

$1,400

$1,600

A-HD A-MD A-LD U-HD U-MD U-LD

FD (HFC N+0) RFoG

$0

$200

$400

$600

$800

$1,000

$1,200

$1,400

$1,600

A-HD A-MD A-LD U-HD U-MD U-LD

FD (HFC N+0) RFoG

Population Density:– Highly urbanized areas with

>200 HHP/mile

– Average urban areas with approximately 80 HHP/mile

– Rural areas with approximately 30 HHP/mile.

Infrastructure vs. Total Cost:– RFoG (FTTH) infrastructure cost < HFC

cost even for average population density; at low premium for high population density areas.

– Total RFoG cost with CPE devices > HFC cost except for rural areas.

– Cost effective scalability of RFoG to RFPON (future addition of PON).


RFoG LimitationsRFoG Limitations

Downstream reach traditionally limited by EDFA output, splitter loss, CPE input requirements

Upstream reach limited by CPE laser, splitter loss, receiver input requirements, and channel loading

– Upstream laser typically a low-cost, low-power unit

Fiber count

‘Just cable TV’ services

– What happens next when MSOs need to provide even higher bandwidth services?

The solution: RFPON – next-generation RFoG


What is RFPON?What is RFPON?

RFPON: Next-generation RFoG

– RFoG with the ability to seamlessly add GEPON capabilities

Simple, cost-effective way for MSOs to deploy FTTP

– Same services as traditional HFC

– Same technology as traditional HFC

– Same back-office provisioning systems as DOCSIS system

Ideal for:

– New housing developments where FTTP is a must

– Low density, rural areas of the franchise

Can serve homes, businesses and MDUs

SCTE standards initiative in process


RFPONRFPON

Fiber all the way to the home

RFPON CPE

Splitter

Broadcast Tx EDFA

Digital RPR

WDM

1550 nm

RFPON VHub™

>60 km

1550 nm

1610 or 1310 nm

Choice of CWDM’s


Evolutionary FTTPEvolutionary FTTPDOCSISDOCSIS®® & GEPON & GEPON

RFPON VHub™ providing video, DOCSIS data and voice services

– PLUS capacity for 2 PON modules

– GEPON compliant

– 1490 nm downstream, 1310 nm upstream

Up to 256 Video+DOCSIS customers

– PLUS up to 128 (2x64) GEPON customers

Each GEPON module supports

– 1 Gbps bandwidth

– Up to 64 customers

– DOCSIS back-office provisioning

• One system for both solutions

• No operator re-training

Node PON™

Module


Simple RFPON DesignSimple RFPON Design

Add GbE switch connected

to the Internet backbone

GEPON interface designed

to integrate with DOCSIS

back office

Add GEPON OLTs to the node to

provide shared GbE services

Replace the OP4138 with OR4168

receiver / filter

RFoG continues to operate as

before for your Customers

Replace the RFoG CPE with a

RFPON compatible unit to

provide Customer with shared

GbE service


GEPON ModuleGEPON Module

Compatible with HFC or Fiber Deep architectures

Serves up to 64 customers using standard PON CPE devices

Bandwidth rate limiting from 1 Mbps to 1000 Mbps in 1Mbps steps

Compatible with standard GigE switch at head-end

Compatible with Aurora digital return and NI3030E


Cost Comparison (Today)Cost Comparison (Today)

$15/sub

– 256 kbps/sub forward

– 180 kbps/sub reverse

$9K/600 subs

– 4x38 Mbps forward for 152 Mbps total

– 4x27 Mbps reverse for 108 Mbps total

$23/sub– Forward & Reverse (symmetrical)

• 10 Mbps/sub for GEPON

– Net of overhead

$1,500/64 subs

– 610 Mbps (net of overhead) or 200 Mbps total; symmetrical

DOCSIS 3.0 Alternative Technologies


Cost Comparison (Future?)Cost Comparison (Future?)

$7/sub

– 256 kbps/sub forward

– 180 kbps/sub reverse

$4K/600 subs

– 4x38 Mbps forward for 152 Mbps total

– 4x27 Mbps reverse for 108 Mbps total

$16/sub– Forward & Reverse (symmetrical)

• 10 Mbps/sub for GEPON or 3 Mbps initially for BitCoax

– Net of overhead

$1,000/64 subs

– 610 Mbps (net of overhead) or 200 Mbps total; symmetrical



CPE Cost ComparisonCPE Cost Comparison

>$80 /sub today for:

– 152 Mbps/sub forward

– 108 Mbps/sub reverse

$50 /sub in future

Total :

– Today: $95 /sub for 256 kbps/180

kbps forward/reverse service

– In Future: $57 /sub for 256

kbps/180 kbps forward/reverse

service

Today: $150 /sub for GEPON– Forward & Reverse: 610 Mbps/sub

for GEPON (net of overhead)

$100 /sub for GEPON

– 610 Mbps forward or 200 Mbps total; symmetrical

Total:

– Today: $173 /sub for 10 Mbps symmetrical

– In Future: $116 /sub for 10 Mbps symmetrical


DOCSIS 3.0 GEPON

Today $0.37 /sub/kbps $0.017 /sub/kbps

Future $0.22 /sub/kbps $0.012 /sub/kbps


In SummaryIn Summary

RFoG’s cost is more than HFC in high take rate / high density locations

Can be lower CapEx in low take rate / low density applications

Does not require specialized technicians

Does not require “back office” changes

RFPON is the next-generation RFoG

– Extends reach / Reduces cost / Reduces fiber count

– Doubles upstream bandwidth (compared to DOCSIS 3.0)

Seamless evolution to include PON functionality

– Standards-based GEPON

– Up to 64 users per GEPON module

– Integrated with deployed DOCSIS provisioning system


Existing, Deployed, WorkingExisting, Deployed, Working

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