broadband services primer
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![Page 1: Broadband Services Primer](https://reader034.vdocuments.net/reader034/viewer/2022051616/5539125b550346e93a8b4907/html5/thumbnails/1.jpg)
IPTV Deployment via VDSL2
at the Customer Premises
WSTA 2008 Annual Convention
Lake Geneva, WI5/21/2008
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Broadband Delivery
• HFC – Hybrid Fiber Coax
• PON – Passive Optical Network
• xDSL – Digital Subscriber Line
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HFC• Traditional CATV Network – Comcast,
Time Warner, Charter, Cox, etc.
• Shared BW – VoIP, Data
• RF – Video - Broadcast
Node
O/E
CATV
Head
End
Tap
RG-8
Fiber
RG-11
~500
Homes
www.speakeasy.net/speedtest/
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PON
• Verizon FiOS Network (B/G)
• Shared BW – Voice and Data
• RF Video
• Distance Independent
OLU
1 x 32
Central
Office
OLT
Fiber
FTTH
VDSL2 (Some Cases)
MD
U/O
NT MDU’s
OLU
1 x 32 UP
SO
NT
ON
TU
PS
UP
S
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xDSL• Traditional POTS/ISDN/ADSL/SDSL
Network – AT&T, Verizon, Qwest, etc.
• Dedicated BW – Voice (POTS), Data
• Distance Limited
Remote
DSLAM
O/E
Central
Office
SAI
UTP 25P
Fiber
UTP 3/4P
ADSL <18kft
UP
S
DS
LA
M
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VDSL2
• System Upgrade from Traditional
POTS/ISDN/ADSL/SDSL Network –
AT&T, CenturyTel, Qwest, etc.
• Dedicated BW – IPTV, Voice, Data
• Distance Limited
Remote
DSLAM
O/EUTP 2P/4P
VDSL2 <3kft
FiberCentral
Office UP
S
SAIUTP 25P
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Bandwidth (3kft)• VDSL2
– Dedicated - 30Mbs
• HFC DOCSIS 2.0 – Shared – 40Mbs – ~3Mbs*
• HFC DOCSIS 3.0 – Shared (2010+) – 160Mbs – ~12Mbs**Based on 500 HP/node and 30% TR
• PON – Shared – 622-2488Mbs – ~20 - 40Mbs**Based on BPON/32 and GPON/64 split
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IPTV
• 3SD/1HD takes ~25Mbs - 4HD ~37Mbs
– 3mbs for SD and 7Mbs for HD with 6Mbs data
• Efficient Transport of Video
• Interactive Guide
• Quick Channel Change
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Radio Frequency Interference (RFI)
• RFI introduced into drop from DSLAM to subscriber
• RFI is introduced from various sources– Bug Zapper
– Dimmer Switch
– All electronics and computers
– Florescent light ballast
– Motors – washing machine, refrigerators, etc.
– RF controlled devices
– Power Grid
• Concentration of RFI in MDU’s
• Filtering eliminates random noise from entering subscriber premises– optimizes Home Network Performance
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• Splitter/Filter
– Eliminate out of Band Noise
POTSVDSL2
Noise Noise
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Home Network - HPNAB• Home Network Connects all Components
– DVR, Set Top Box, Computers
• Home Wiring is the biggest challenge– Phone & Coax wiring in most Homes
• Home runs best solution
• Coax outlets in convenient locations– RG-6 or better
– Minimize connections and splitters
• Phone Wiring – At least Cat3 or better
– No bridge taps
• VDSL2-8a (25kHz-8.5MHz) HPNAB (12-28MHz)
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twisted pair
100Ω
twisted pair
100Ω
75Ω coaxial
Gateway Set-top
boxTV
1x3 splitterDM000373
Splitter/Filter
DM000417A
SFU
VDSL
signal
HPNA
signal
POTS
VDSL and
HPNA signal
Telco NIDSNI-4600
Coax NIDCG-1000XL
Diplexer
DM000371
Ethernet over
Coax IPTV
Splitter
1x2 DM000372
1x3 DM000373
1x4 DM000374
1x6 DM000375
HPNA HPNA/VDSL VDSL
DM
00
04
17
A
Set-top
boxTV
DC Blocked Balun
DM000404
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Field Observation
IPTV Delivery
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Starting at the Cross Connect
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The
Nelson’s
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The Garcia’s
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The College Guy’s
Apartment
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The Smith’s
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Interior Components
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Some Key Factors for Successful
Installation• Install should last between 2-4 hours
• Knowledgeable Technicians – Knows the Product
• Promise of Future Services– Dynamic Provisioning
– Video Phone
– Security Monitoring
– Remote Video
• QoS – Telco Service is Guaranteed
Content will Win!Video is more important
Phone and data is assumed
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Terms• ADSL – Asymmetric DSL
• CATV – Community Antenna TV
• DOCSIS – Data-Over-Cable Services Interface Specification
• DSLAM - Digital Subscriber Line Access Multiplexer
• DSL – Digital Subscriber Line
• HFC – Hybrid Fiber Coax
• HPNA -Home Phoneline Networking Alliance – Network Standard
• ISDN – Integrated Digital Services Network
• Mbs – Mega Bits per second, MBs – Mega Bytes per second (8 x Mbs)
• MSO – Multi-System Operator
• OLT – Optical Line Terminal, ONU – Optical Line Unit
• PON – Passive Optical Network – APON, BPON, GPON, xPON
• POTS – Plain Old Telephone Service
• PSTN – Public Switched Telephone Network
• RG – Residential Gateway
• SAC - Service Area Concept (Strategy)
• SAI - Service Access Interface UDSL – Ultra-high-bit-rate DSL
• UPS – Uninterruptible Power Supply
• VDSL – Very-high-bit-rate DSL using 25KHz to 12MHz
• VDSL2 – Improved Version of VDSL using 25KHz to 30MHz
• VRAD – Video Ready Access Device (Basically Remote DSLAM for VDSL)