broadband services primer
DESCRIPTION
TRANSCRIPT
IPTV Deployment via VDSL2
at the Customer Premises
WSTA 2008 Annual Convention
Lake Geneva, WI5/21/2008
Broadband Delivery
• HFC – Hybrid Fiber Coax
• PON – Passive Optical Network
• xDSL – Digital Subscriber Line
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/
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
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
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
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
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
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
• Splitter/Filter
– Eliminate out of Band Noise
POTSVDSL2
Noise Noise
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)
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
Field Observation
IPTV Delivery
Starting at the Cross Connect
The
Nelson’s
The Garcia’s
The College Guy’s
Apartment
The Smith’s
Interior Components
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
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)