Transcript DVAC RFoG Commercial..

RFoG Commercial Solutions
SCTE DCAV Meeting
RFoG for Commercial Solutions
• RFoG Technology Advantages
• RFoG Economic Factors
• RFoG Architecture for Commercial Services
• RFoG Expansion to GEPON for Commercial Services
• RFoG/GEPON Components
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Comprehensive FTTx Solutions
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RFoG Advantages
• Lowers OPEX annual, up to 90% less than HFC
– Reduce FCC testing, eliminate OSP powering
– Corrosion eliminated, less batteries and get 8-10 hours backup time
• Enables additional services
– Hybrid RF PON – RFoG & EPON
• WiFi Hotspots & cellular towers served by the same fiber plant
• Small Medium Enterprise - multiple T1s of voice traffic, plus GbE of data
services
• Takes fiber to the subscriber home/or business building
– Improved CNR
– Increased CMTS Uptime
– Improved downstream bandwidth
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RFoG Advantages Continued
• Preserves investments plus no changes to business/service
processes
– Uses existing CMTS, laser transmitters, return path receivers, DOCSIS
modems
– Uses current business processes and procedures for all services
– Transparent to DOCSIS 1.0 through 3.0
• Supports maximum DOCSIS 3.0 cable modem data rate throughput
• Seamless upgrade for any customer to get GE-PON based IP
services
– Same network architecture
– Use additional wavelengths for PON overlay
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MSO Challenges
• MSOs need better access network performance to compete
– Competition
– MSO downstream bandwidth is adequate (can expand to 1 GHz)
– MSO upstream is limited by HFC
• Ingress noise robs bandwidth
• Inherently more noise in system limits picture quality and data transmission
rates
• DOCSIS 3 implementation with 64QAM is questionable, particularly bonded
64QAM
– Invest in a Future Proof Architecture
• RFoG / MicroNode addresses the challenge
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Traditional HFC Architecture
Hub
Downstream
Video Feed
Optical Distribution
Network (6 fibers)
Nodes of 256 - 1000 homes with
4 coax trunks
Coax with RF
amplifiers
Forward Path 1550
or 1310nm
Laser
Transmitter
EDFA
Traditional
Node
Return Path
Receiver
Return Path 1310 nm




Customer
Premise
Requires separate fibers for forward and return paths
Every node requires a return path receiver in the hub
Doesn’t provide upstream ingress or impulse noise suppression
All node users share the 4 upstream channels used for cable
modem data service, voice traffic, etc.
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RFoG Operation
Headend
Voice
Network
Video, Voice
& Data –
Combined
Signal
Outside Plant
Customer Premises
Laser
Transmitter
1550 nm
Downstream
1550 nm
Downstream
MicroNode
EDFA
WDM
IP
Application
Switch
CMTS
Return Path
Receiver
Cable
Modem
1x32
Splitter
1310 nm or 1610nm
Upstream
STB
1310 nm or 1610nm
Upstream
 Single fiber supports both forward and return path
 One return path receiver can be shared by 32 MicroNode transceivers
 MicroNode operates upstream in “Burst Mode”
 Upstream laser is “on” only during an RF burst from the cable modem or STB
 Ingress and impulse noise is substantially reduced or eliminated entirely
 Allows recovery of lower 10MHz of upstream spectrum
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RFoG MicroNode
Integrated WDM
in unit.
SC/APC
Connector
1550 nm 1310 nm
Single Mode
Fiber
RF Amp
RF Diplex
Filter
F-Connector
RF Detector
DC Power Supply
FP
Burst-mode
Transmitter
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Burst Mode Operation
1.
CMTS schedules the
Cable Modem or STB
to transmit data
3.
MicroNode senses
burst; turns on laser
for duration of data
2. Cable modem/STB
sends burst of data
Cable Modem
Laser
Transmitter
EDFA
WDM
Video/RF Feed
RPR
CMTS
Core
Network
1
1550nm
Splitter
n
MicroNode
RPR receives data;
sends it to CMTS
5.
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Set Top Box
(STB)
MicroNode
1310nm
4.
MicroNode
CMTS proceeds to next
scheduled device
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MicroNode Range/Density
Rx Level = -6dBm
CM
CMTS
DS
Feed
Return
Receiver
Laser
Transmitter
Tap
WDM
1xn
Splitter
EDFA
Unterminated
Endpoints
STB
Tx Level = +18dBm
20 Km
MicroNode
• 20Km reach with 32 splits requires 23dB optical budget
• CommScope achieves this with a low-noise receiver, allowing lowpower, low-cost EDFAs
• Competitive designs cost 37% more for the EDFA component
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Bandwidth Upstream Improvement
MicroNode usable spectrum upstream = 37MHz
HFC typical spectrum upstream
27MHz
0
5
10
15
20
25
30
35
MHz
40
42
RFoG and MicroNode have
37% more usable RF upstream
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Bandwidth Downstream Improvement
RFoG MicroNode downstream spectrum = 50-1100 MHz
HFC typical spectrum downstream
50-870MHz
0 50 100
200
300
400
500
600
700
800
1000
1100
MHz
870
RFoG MicroNodes have
28% more downstream BW
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MicroNode SNR
CM
CMTS
DS
Feed
Return
Receiver
Laser
Transmitter
Tap
Unterminated
Endpoints
Node
Splitter
(sums
ingress
noise)
EDFA
HFC SNR = 26dB
 Downstream
 Better Distance / Density
 Low Noise Receiver
 20Km range with 32 splits
 Bandwidth to 1GHz
STB
 Upstream - Higher SNR than HFC
 Recovers 10MHz Lost to Ingress Noise
 Enables 64QAM upstream channel bonding
(27Mbps  108Mbps)
CM
CMTS
DS
Feed
Return
Receiver
Laser
Transmitter
EDFA
RFoG SNR = 34dB
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Tap
WDM
1xn
Splitter
Unterminated
Endpoints
STB
MicroNode
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RFoG Economics
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RFoG Costs vs. HFC
•
•
•
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RFoG at Parity to HFC Re-build or New-build
Higher
70
60
50
40
New-build or
Rebuild all…
Complete
Rebuild
30
20
Lower
•
At some combination of density,
(homes per mile), and penetration
rates, RFoG and HFC will cost the
same – see curve/line
The position of the curve rises on the
chart as headend optics and field active
optics get cheaper, meaning RFoG is
competitive at higher densities and
higher penetrations.
The nature of the curve varies by
equipment supplier and by operator.
The curve represents capital costs
only, since we all know RFoG
operational costs are lower than HFC.
Capital costs are split between
construction and subscriber.
Density Homes per Mile
•
10
0
Lower
Higher
Services Penetration
16
RFoG Construction Capital
•
•
•
The mix of construction capital and
subscriber capital are dependent,
again, on homes per mile and
penetration rate, which is fixed in this
example.
The “Installed Subscriber Share of
Total Cost” approaches 40% in higher
density areas.
If the construction department was
funded based on miles to build, they
could build 50% more miles on the
same funds in this example.
RFoG presents significant advantages
to operators overbuilding or with newbuilds since the capital costs for
subscribers happen after the plant
construction.
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With Strand Construction
70%
60%
50%
Percent
•
Subscriber
Share of
Equipment
40%
Installed
Subscriber
Share of Total
Cost
Equipment
Share of Total
30%
20%
10%
0%
0
50
100
Homes per Mile
17
RFoG Costs at Parity to HFC Upgrades
•
RFoG at Parity to HFC Upgrade
70
Higher
60
50
Rebuild all
plant items
40
Replace Amps,
Taps and Coax
30
Replace Amps
and Taps
20
Replace Amps
and Spacing
Upgrade Amp
Modules
Lower
•
The familiar green curve in the chart
represents the parity point between
the costs of RFoG rebuild and HFC
rebuild or complete upgrade.
The other curves represent
decreasing complexity upgrades, with
simple amplifier module replacement
as the easiest upgrade.
If not today, at some point in the
future the cost reductions in Lasers,
EDFAs, nodes, taps and NIUs will
make RFoG competitive to some
levels of upgrades, such as coax,
amp, tap and drop replacement.
Density Homes per Mile
•
10
0
Services Penetration
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Tiered Business Services
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FTTH Fiber Distribution Alternatives
• Distributed Tap Architecture
– Eight 4-port taps cascaded along one
fiber
– Accommodates 32 homes per fiber
32 Home Area
Tapped Fiber Architecture
Tap#1
Tap
Tap
Tap
Tap
Tap#2
Tap#3
Tap
Tap
#1
#2
#3
Tap
Tap
Tap#4
...
.
1X32
Tap #8
Tap
Tap
#8
#4
• Distributed Splitter Architecture
– Eight 4-port splitters each served by
own fiber from an 8-way splitter
– 32 homes served by combination of
splitters and increased fiber use
• Centralized Splitter requires one fiber per
home connected
.? . ?.
Subscriber
Subscriber
Drop
Drop
Subscriber
Subscriber
Location
Location
1x8
Tap
1x8
Splitter
Splitter
Tap#1
Splitter
Tap
#1
-?
-??
-
1x4
1x4
Tap
Splitter
Splitter
NIU
NIU
1x4
1x4
Tap
Splitter
Splitter
1x4
1x4
Tap
Splitter
Splitter
1x4
1x4
Tap
Splitter
Splitter
NIU
NIU
1X32
32 Home Area
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Distributed Splitter Architecture
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Distributed Architectures for Expansion
• Distributed architectures use less fiber for RFoG services, leaving
room for additional fiber for other uses
• Tap or splitter locations become access points for additional services.
• Mixed service areas including residential and commercial customers
can use the same infrastructure for both types of customers.
• Commercial applications justify RFoG deployment because of greater
business services revenue.
• The RFoG network is in place to expand into residential areas for
reasons of new growth, service demand or competition, such as
defending your turf from a telco.
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RFoG Commercial Deployment
• A commercial deployment of RFoG with Distributed Taps as Access
Points;
• Commercial businesses line the street with residential areas
surrounding them.
• Access points provide connections to serve residential areas, for
reasons of expansion or due to competition.
Residential
T
T
Residential
T
T
Tap
Fiber
T
Business
Residential
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Residential
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Access Point Flexibility
• All subscribers, whether residential or business, receive standard
DOCSIS services, voice, data and video – broadcast, switched
digital, HD, etc.
• A drop cable with a single fiber can provide the RFoG services,
connecting from the tap port to the NIU at the subscriber location
Distribution Fiber
Tap
Location #1
Tap
Location #2
4 Port
4
Port
Tap
Tap
4
Port
4Tap
Port
Tap
Std
Services
NIU
NIU
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4Tap
Port
Std
Services
NIU
NIU
NIU
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Access Point Flexibility
• Tap location 2 has evolved to include a CWDM mux to extract a pair
of wavelengths from a dark fiber to provide GigE services to a
customer who also receives RFoG services.
• The drop cable now must provide 3 fibers to support the two
systems
Distribution Fiber
Tap
Location #2
Tap
Location #1
4 Port
Port
4
Tap
Tap
CWDM
CWDM
l1
4 Port
Port
4
Tap
Tap
4 Port
Tap
l2
Multi
Fiber
Drop
Std
Services
NIU
NIU
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Ethernet
+ Std Services
Media
Media
Converter
Converter
NIU
NIU
NIU
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GigE on the RFoG Infrastructure
Dark Fiber in RFoG Networks is used to provide
commercial service connections via CWDM
Headend
CWDM Media
Converters
8-Wavelength
CWDM Mux
l1,2
l3,4
Media
Converter
Media
Converter
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l5,6
Media
Converter
l7,8
Media
Converter
Four pairs of wavelengths are available in
each dark fiber in the Tap
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Access Point Flexibility
•
•
A PON system can be implemented in the same infrastructure using the
access points, where a separate fiber carries the PON signals to the
subscriber through the drop
RFoG standards permit the overlay of PON and RFoG on the same fiber,
with the use of additional WDM filters. In this approach, only one fiber would
be needed in the drop.
Distribution Fiber
Tap
Location #1
4 Port
Port
Tap
Tap
Location #2
CWDM
CWDM
l1
Tap
Location #3
4 Port
Port
Tap
4 Port
Port
Tap
l2
MultiFiber
Drop
Std
Services
NIU
NIU
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Ethernet
+ Std Services
Media
Media
Converter
Converter
PON +
Std Servuces
NIU
NIU
ONT
ONT
NIU
NIU
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Access Point Flexibility
•
•
Access points are unlimited in the ways additional fibers can be used for
additional services.
The last tap location identifies a fiber that is available to extend the network,
provide a full DWDM selection of wavelengths, connect with other fiber
networks, etc.
Distribution
Fiber
Tap
Location #1
Tap
Location #2
4 Port
Tap
4 Port
Tap
Tap
Location #3
Tap
Location #4
4 Port
Tap
4 Port
Tap
CWDM
l1
l2
MultiFiber
Drop
Std
Services
NIU
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Fiber
Extension
Ethernet
+ Std Services
Media
Converter
PON +
Std Servuces
NIU
ONT
NIU
Std
Services
NIU
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Access Point Features
• For access points to provide the greatest flexibility in the RFoG
network design, they should embody at least the following features:
– Accommodate additional optical modules, such as CWDM, more
splitters, such as 1x8 plus 1x4, or field couplers
– Support multi-fiber drop cables
– Support splicing and management of additional fibers and cables beyond
what is required for the single fiber RFoG drop solution.
• Pre-connectorized drop cables might limit expansion of services from
the Access Point
– Originally thought to save on field splicing, whose costs are dropping,
and being replaced by mechanical connectors
– Can’t support multi-fiber drop applications as discussed before.
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Business Services Architecture
Small/Medium
Enterprise
Headend
Laser Tx
RFoG NIU
Packet Cable
& Data
EDFA
Video
Services
Video
Feeds
CMTS
RPR
Core IP
Network
WDM
Combiner
Splitter
VoIP
Switch
PON OLT
IP
Video
Corporate Offices
Business Parks
Router /
Switch
T1
PON
ONT
PON
ONT
Ethernet
PBX
Cellular
Backhaul
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Business Service Opportunity
• RFoG has evolved to being part of a tiered business service offering
– <20 Mbps service – RFoG (lowest cost FTTB solution)
– 100 Mbps service – EPON
– Fractional Gbps service – 10G EPON
• RFoG provides several performance and operational benefits to
traditional HFC solutions
– Elimination of Ingress Noise to enable upstream bonded DOCSIS 3.0 (515 MHz now useable)
– Improved CNR & increased CMTS uptime
– Reduced OPEX (Elimination of network powering, CLI Testing & Amp
sweeps)
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Optical Infrastructure Products
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BOS RFoG Products – The Full RFoG
Solution
OSP Products
Above Ground
Closure
Optical
Splitters
Below Grade
Closure
Head End Products
Low Noise
RPR
Splitter
Cabinet
Subscriber Products
Battery
Backup
Unit
Laser Transmitter
EDFA
RFoG ONUs
WDMs
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Rack Mount Splitters
ONU Enclosure
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RFoG CPE Products
• 1610 nm Return Path
• Meets the developing SCTE RFoG standard
• Delivers PON Compatible DOCSIS based
services
• Works on the same ODN with any PON that
uses ITU compliant wavelengths (10G EPON,
EPON, GPON)
• 1610 nm Return Path
w/ PON Pass Through
• Adds Support for PON ONTS s
– Integrated WDM provides fiber
connectivity with ONT
– WDM provides 1490/1310 nm PON
wavelengths
• Delivers PON and DOCSIS based services
• 1310 nm Return Path
• Meets the developing SCTE RFoG standard
• Provides the lowest cost approach to deliver
DOCSIS based services over a deep fiber
RFoG infrastructure
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MicroNode Performance Specs
• Downstream
–
–
–
–
–
–
Input wavelength: 1545 - 1565nm
Input Power Range: +0 to –6 dBm
RF Output @ 550MHz: +17dBmV/ch ±2dBmV
Frequency response: 50 MHz - 1GHz
Tilt: 5dB
RF Performance:
• CNR > 48 dB (–4 dBm input level)
• CSO > 65 dB (0 dBm input level)
• CTB > 65 dB (0 dBm input level)
• Upstream
–
–
–
–
–
Wavelength: 1610 nm or 1310 nm
Output Power: +3 dBm
Input dynamic range: +15dBmV to +40dBmV
Frequency response: 5 to 42MHz
Laser Activation: <1.5 ms
• SCTE compliant F connectors and cast
housing.
• PON Pass Through Port Loss: ≤1.0 dB, where
applicable
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• Standard Features
• 1 GHz RF spectrum provides extended RF
capacity.
• Fast laser activation prevents degradation of
upstream bursts.
• RF-based AGC to provide constant RF output
over optical input range.
• High RF output with up-tilt reduces need for inhome amplifier.
• Transparent return path allows use of existing
CPE (All Cable Modems & Set-top Boxes).
• Return transmission threshold suppresses
noise from the subscriber’s residence (Full 5 –
42 MHz band is available).
• Dedicated F port for powering
• Die-cast aluminum housing protects
electronics and provides excellent shielding.
• Temperature Hardened
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Network Interface Device (NID)
•
•
•
•
•
•
Environmental and mechanical protection for RFoG ONU
Integral fiber management/splice tray
Inner cover to secure optics from subscribers
Weather seal around door, and grommets for fiber & coax cables.
Engineered to UL specifications for “Extreme Weatherability”
Compatible with 1550/1310 and 1550/1610 ONUs
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Battery Backup Unit
• Small form factor indoor battery backup
unit.
• Works with NIU standard 12 Vdc power
supply.
• F connector input/output.
• Utilizes standard disposable or
rechargeable AA batteries.
– Enables users to provide their own
batteries.
• Typically provides 8 hours of backup.
• LED status indicators:
– Improperly installed batteries
– Battery life
• Visual and Audible alarms when nearing
end of battery life (audible alarm can be
disabled by the subscriber).
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BrightPath Optical Solutions (BOS)
Outside Plant Optics
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2000 Series Access Point – Distribution Side
Distribution access
separated from drop
Fiber management for
up to 36 fibers
Optical module
protected behind front
plate
Environmentally
sealed
Built-in splice
sleeve holders
Vertical or horizontal
mounting hardware for
aerial or underground
installation
Ground wire access
and clamp
Sealing grommets and
grounding features
accommodate a wide
variety of fiber types,
including loose tube and
armored
Branch cable option for
business services or
extensions
From Node or Tap
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To Tap
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2000 Series Access Point –Drop Side
No access of distribution
side required by drop
technician
Bulkhead adapters for
connectorized pigtail
splicing
Fiber splice sleeve and
management
Accommodates multiple
cable types, including
armored and flat drop
Up to 8 drop cables
To Subscriber A
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To Subscriber B
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Distributed Tap Sample
Sample Tap Design (4 Port)
17 dB
17 dB
15 dB
13 dB
13 dB
10 dB
-3.9
-4.9
-4.5
-3.0
-5.0
-4.4
13 dBm
Launch
Power
Optical
Level
At ONU
•Minimum Design input to ONU:
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-5.0 dBm @ 1550 nm
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Stackable Optical Module Enclosure
• Hardened Optical Splitters
– Full PON wavelength support
– Planar devices:
• 1x2, 1x4, 1x8 splitters
– SC/APC & direct splice versions
– Optical modules are stackable
– Fit the Above Ground and Below Grade
Enclosures
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Above Ground Enclosure
• Enclosure
– Pedestal or aerial mounting
– Separate distribution/drop access
– Fiber management and bend control
– Support multiple cable types/designs
– 8 fiber drop and 1 fiber extension ports
– Supports CWDM overlay.
Optical Modules
Enclosure
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Below Grade Enclosure
• Below grade splice enclosure for optical
splitters:
– Utilizes same optical modules as above
ground closure
• Supports fiber extension and up to 12 flat
drop cables (8 drop armored).
• Supports multiple drop and distribution
cable sizes and types (flat, messenger,
armored, all dielectric, etc.)
• Available with up to 5 splice trays (24
splices per tray)
• Integral cable termination and grounding.
• Basket for storage and management of
unused buffer tubes
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Summary for RFoG Commercial Solutions
• RFoG solutions present opportunities for operators to
– build networks technically and economically competitive with HFC,
– incorporate future-proof strategies in network design and equipment
selection
– yield a more-productive solution than HFC.
• The advantages come from:
– supporting commercial services that weren’t possible with HFC,
– presenting capital expense options not possible with HFC.
• The properly designed RFoG network with:
– additional dark fiber and
– use of flexible access points and
– multi-fiber drops
• will take the operator a long way into the future with the ability to
migrate to GPON and GEPON commercial services and to support
services unimagined today.
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Thank you!
Contact [email protected]
(267)465-5215 Mobile
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