lessons learned from real world ftth deployments...ftth splitter architectures •splitter...
TRANSCRIPT
Lessons learned from real world FTTH deployments
Mark Boxer, OFSCharles Phillips, Gibson EMCGeorge Plisinski, II., NineStar Connect
Agenda
• Real-world lessons from the manufacturer – Mark Boxer
• Lessons learned from a relatively new deployment – Charles Phillips
• Lessons learned from an established network – George Plisinski, II
About OFS
Real-world questions and answers – from the fiber manufacturer
Questions from less to more complex
Choose the right fiber type for the application
Single-mode Fiber• Carries only one mode of light• Used for FTTH
Multimode FiberCarries multiple modes of lightNot typically used in FTTH
ConventionalSingle-mode Fiber
Bend InsensitiveSingle-mode Fiber
(small radius) (small radius)
SERVICE DISRUPTED
SERVICE MAINTAINED
5
Different fiber types do different jobs
G.652.D/G.657A1
Network core and drops
Cabinets, boxes,closures
G.652.D/G.657A2 G.657B3
In homes and buildings
Fibers from different manufacturers can be spliced together
• Single-mode fibers from different manufacturers can be spliced together
• Fibers with different mode field diameters may show a “gainer”• These don’t typically affect network
performance
• Do not splice single-mode to multimode fibers together
Not all fibers are the same
• Different manufacturers may use different raw materials for the glass
Which do I want in my network?
More bandwidth requires more wavelengths
ITU-T Wavelength Bands (nm) – G.694.2
1260 1280 1300 1320 1340 1360 1380 1400 1420 1440 1460 1480 1500 1520 1540 1560 1580 1600 1620
RFoG
GE/GPON
201210GPON
2016NG-PON2
(40G-PON)
Year
1990sTechnology
P2P & DWDM
2000s12 ch CWDM
E-Band CWDM 2010
Full Spectrum?Std SMF G.652.D Bending LossWater peak loss 10 mm radius
FTTx and 5G will likely use many of these!
More wavelengths need fibers with low loss across the spectrum
wavelength (nm)
0
0.3
0.6
0.9
1.2
1300 1500 1600
Loss
(d
B/k
m)
O LCSE
1400
LWP fiber
Zero Water Peak fiber
U
Conventional SM Fiber
G.652A/B
Typical OSP fiber and cable reliability – in one slide
• When installed/operated as recommended…
• Fiber
• Following recommended installation tensions limits fiber strain
• No known upper lifetime limit
• All materials
• Strain is limited to the “elastic” range of the curve, no plastic deformation
• Inner/Outer polyethylene jacket
• Bell Labs/OFS work on polyethylene began in 1947
• Deep understanding of various reactions with UV, aging, etc
• View from OFS R&D
• “We don’t know when jackets with 2.6% N110 black will degrade … they have not existed long enough for us to find out yet.”
• “Current modern black PE jackets for aerial optical cable will almost certainly be fine long after we’re all dead.”
Cable choice depends on the application
• Often better choice when going to new areas
• Lower make-ready and installation costs
• Less clean drop management
• Often faster installation
ADSS Lashed cable
• Typically more expensive unless strand is available
• Good choice for higher customer density areas and more ground clearance
• Higher make-ready costs and slower initial deployment
• Cleaner drop management
OFS expects long-term reliability for either cable type to be similar.
Solutions can be mixed and matched as needed.
Squirrels – ADSS versus lashed armored cables
• Cables need to last for decades
• Squirrels will eat through either dielectric or armored cables
• Armored cables may take a little longer
• Armored cables bring bonding/grounding, lightning concerns
• OFS is familiar with various additives used for “squirrel resistance”
• We are skeptical of their performance.
• OFS’ position for coops
• The best defense against squirrels is an effective tree-trimming program
• The benefits of dielectric cables outweigh the limited additional time provided by using armored cables
FTTH splitter architectures
• Splitter architecture is a very important network design question
• Coops typically have high subscription rates and low subscriber density• Distributed or distributed cascaded splits
are likely most cost effective
• Architectures can be mixed and matched as appropriate
Typical network layout Trunk cable and hardware
Terminal and/or splitter
Drop cable and hardware
Cables and devices to and in the home
Summary thoughts
• Fiber is not magic
• Fiber, cable, and architecture types are tools to improve network efficiency and performance
• Learn pros and cons of each from knowledgeable sources The most effective tool
Gibson EMC/Gibson Connect
• Gibson EMC • 39,000 meters• 3500 miles of distribution• 18 substations, 21 communities, 12 counties
• Gibson Connect, LLC• Phase 1 of 5 under construction
• 600 miles of cable• 2800 service drops/customers• GPON-Distributed split infrastructure with 32:1 split• Power space install
• Triple play services
Gibson EMC/Gibson Connect
• Services• Broadband Residential
• 250/250 Mbps• 1G (20% take rate)• Business plans differ slightly
• Voice (partnered with Momentum)• $24.95/line (half and full PRI’s are discounted)• Hosted Voice offerings
• Pay tv (partnered with Nagra and Jackson Energy Authority)• App based tv with no headend facilities (minimal capital investment)• Three tiered packages with no “premium” content or VOD
Gibson EMC/Gibson Connect
The Elephant in the room!!!• Competition
• Culture
• Commitment
• Customer Expectations
• Costs
• Customer Service
Gibson EMC/Gibson Connect
• Real World and Real Opportunities• Managing the customer expectations• Thinking with a competitive market mindset• Make Ready and/or Code Compliance• Communications both internal and external• Customer Service that extends into the home (processes and policies)• Regulation and regulation• Performing the old job with all the duties of the new job• Managing the customer expectations!
• Building a Network• Engineering – staying ahead of the work• Material – planning for lead times• Construction• Ruts and complaints
Gibson EMC/Gibson Connect
• Customer Value• Erase the Digital Divide/Essential Service
• Value priced/More money stays with member
• Cooperative Value• Communication deep into the distribution system
• AMI, SCADA, Outage Management, Demand Response, Distributed Energy, Electrified Transportation, Energy Storage, Power Quality
• Cost of this infrastructure paid for by users of the new services
• Diversified revenue
• Economic Development (It not build it and they will come, but if you don’t build it, they will leave) Protect long term electric revenue
Lessons Learned from an Established Network
Broadband in Indiana
← 25/3 Mbps(FCC Definition)
100/100 Mbps→(100/100 is maximum filter search)
Source IN.GOV 2017 www.indianabroadbandmap.com
←1/1Gbps (1000/1000Mbps) Residential
←40/40 Gbps (40000/40000Mbps) Business
Why Fiber?
PICK 2…
Don’t Limit Yourself to just Broadband…• SCADA, AMI, DA-DR Programs
• Voice (POTS, SIP, PRI, Hosted, PBX Sales/Support
• Video (IP or Over-the-Top OTT)
• ‘Dark’ Fiber Opportunities
• TLS (‘lit’ transport)
• ‘Last mile’ services for regional/national carriers
• Public Wi-Fi deployments in Cities/Parks/Trails
• Colocation
• Managed IT Services
It Will Take Time…
2002-2015 ILEC (Incumbent Local Exchange Carrier) Service Territory
2011-2018 Electric Service Territory
2019-2024 Newly Acquired Water Territory (1/2019)
…And That’s ‘OK’
• New Personnel (‘Not as Many’ or ‘Not as Fast’)
• Training Existing Personnel
• Design Evaluation (and re-evaluation) ‘What’s Working Where’
• Less Reliance Upon Contractors ’Train your Own’
• Spreading Cyclical Equipment Upgrades
• Additional Resources Available for Other Opportunities
Partner, Partner, Partner…
Are you ever done?
George Plisinski, II Manager of Telecom Operations
Mark BoxerApplications Engineering Manager
Charles L. Phillips, P.E.VP of Technical Services, Gibson EMC
VP of Operations, Gibson Connect731.562.1310