Welcome to

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Welcome to Getting to Grips with Speed The
Broadband Revolution
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Nimesh ChauhanITP Apprentice of the Year 2007
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Getting to Grips with Speed Agenda

• What Broadband actually means
• How it works
• How it is regulated
• How it is used

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What is Broadband?
Always on, Always Connected

• ADSL (Asymmetric) 8Mb/s
• ADSL2 (The new alternative) 12Mb/s
• ADSL2 (High Speed) 24Mb/s
• SDSL (Symmetric) 2.3Mb/s
• HDSL (High Bit rate) 2Mb/s
• VDSL (Very High Speed) 30MB/s
• Alternative to ISDN
• Fast internet access

xDSL

• How we will use it in the future

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What is it?
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Defining the term Broadband
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Delivery Methods
Cable or Copper Access Network - 24MBps Fibre
- 2.5GBps Satellite 512KBps Fixed
Wireless Access 300MBps Wi-Fi or Wi-FiMax
270MBps 3G 7.2MBps GSM -
270KBps GPRS - 53.6KBps 3.5G - 14MBps
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Speeds
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How does it Connect?

• Broadband differs from a Dial Up Connection
• No Noise
• Faster
• More reliable
• Allows flexibility and multi-tasking

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How does it work?

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ADSL Asymmetric Digital Subscriber Line

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Concept
Digital Subscriber Line Access Multiplexer
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ADSL E-SIDE
DSLAM
LIC
MDF
Exchange
ADSL D-SIDE
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(No Transcript)
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Out to Line
Exchange
PCP
From Core Network
Overhead or Underground
Existing Copper Cables
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ADSL
Broadband Modem
New Equipment
Exchange
PCP
From Core Network
Overhead or Underground
Combined telephone and broadband signals
Existing Copper Cables
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Contention Rates for ADSL Your Guarantee

• Residential ADSL 501
• i.e. 2Mbps can become 41Kbps
• Business ADSL 301
• i.e. 2Mbps can become 68Kbps Downstream
• Business SDSL 101 (BT IP Stream Symmetric)
• i.e. 2Mbps can become 200Kbps in each direction

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How does it work?
Upstream 25.875KHz 138KHz
HPF
D
U

• Compared to a BT Mega stream E1 circuit which is
  2 Mbps at all times in each direction

LPF
Downstream 138KHz 1104KHz
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Transmission
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The Internet
MDF
ADSL
V/D
ISPs
V/D
DSLAM
V
D
V
HGR
Colossus
BT Central
V Voice Flow D Data Flow V/D Voice and
Data flow
Radius
HGR
Multi Service Intranet Platform (MSIP)
PSTN MODEM
V
D
Dial IP
V
V/D
V
V/D
V/D
PSTN
Digital Switch
CONC
Web Server
Radius Server
E-mail Server
DNS Server
Local Exchange
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SDSL Symmetrical Digital Subscriber Line

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SDSL
Corporate Location
Exchange
Upstream
Downstream
From Core Network
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What is the market like?

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Hours
Source Adapted from Financial Times,
Advertisers in search of revenues look to webs
latest heroes, 23 August 2006, based on figures
from Nielsen/Net Ratings Credit Suisse
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Broadband Facts

• More than eight in ten Brits said that this
  innovation saved them the most time of all the
  modern creations

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Broadband Takeup

• Internet access
• 64 of UK adults have a PC at home
• 53 of UK adults have internet access at home
• (equivalent to around 13 million homes)
• 68 of small businesses have internet access
• Broadband
• 3.99 million total broadband connections
• 2.45 million DSL connections
• 1.54 million cable modem connections
• 15 of homes have broadband
• DSL services are available to 84 of UK homes and
  businesses
• Cable modem services are available to 45
• of UK homes and businesses

• A survey carried out by Google found that people
  in the UK spend more time online that watching
  television

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Source ITU World Information Society Report 2006
(left chart) and ITU Information Society
Statistics Database (right chart)
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Global Speeds
Source ITU Research
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Global Prices
Source ITU Research
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Broadband Takeup