NEW ADVANCES IN TELECOMMUNICATIONS

Lancaster University : 11 March 2002

Dai Davies : General Managerdai.davies@dante.org.uk

www.dante.net

Telecommunications - Telecommunications - The Building BlocksThe Building Blocks

• AccessAccess• Transmission• Switching• Management

DANTEDANTE

• Builds and Manages the Pan-European Builds and Manages the Pan-European Research InternetResearch Internet

• Organises Development of New ServicesOrganises Development of New Services

• Interested in Advancement of TechnologyInterested in Advancement of Technology

200,000 150,00030,000

12,500

200,000

2,000

36

5,00020,000100,000

1

10

100

1,000

10,000

100,000

1,000,000

1996 1997 1998-99 1999-2000

2000-2001

Period covered

Euro

/ M

bps /

Yea

r

average offer pricelowest offer price

Development of Prices for International Bandwidth (Logarithmic Scale)

Pan European Network History

2000 4000 6000 8000 10000 12000

IXI 1990-1993

EUROPANET 1993-1996

EUROPANET 2 1996-1997

TEN-34 1997-1998

TEN-155 1998-2001

GEANT 2001-

Trunk Network Capacity (KBps)

Pan European Network History - Logarithmic Scale

1 10 100 1,000 10,000 100,000 1,000,000 10,000,000

IXI 1990-1993

EUROPANET 1993-1996

EUROPANET 2 -1996-1997

TEN-34 1997-1998

TEN-155 1998-2001

GEANT 2001-

KBps

GEANT Backbone Topology March 2002

AccessAccess

• xDSLxDSL• Cable Modem• G-Ethernet• Dark Fibre • 3G Mobile

1990 64 KBps PDH1992 2 MBps PDH1996 34 MBps SDH1998 155 MBps SDH2001 10 GBps DWDM

Transmission Building Transmission Building BlocksBlocks

Transmission Building BlocksTransmission Building Blocks

DevelopmentDevelopment20032003 40 GBps40 GBps20052005 80 GBps80 GBps

Denser DWDMDenser DWDM

DWDM Implementation and SwitchingDWDM Implementation and Switching

• Analogue Technology Analogue Technology – power budgetspower budgets– attenuationattenuation– chromatic dispersionchromatic dispersion

• Mechanical (physical) Switching• Crude Management

SwitchingSwitching

• Architecture - Software vs HardwareArchitecture - Software vs Hardware• Wire Speed Performance• Back to Crossbar

Data Switching Building Data Switching Building BlocksBlocks

1990 X25 Connection Oriented1992 IP Connection Less1996 IP + ATM1998 IP Over ATM2001 IP

Switching Building Blocks Switching Building Blocks PerformancePerformance

1998 155 MBps Streamsdynamically

2002 10 GBps Streamsstatically

2002 Packet Streamsdynamically

ManagementManagement

• Less rather than MoreLess rather than More• Quality of Service• Network Intelligence• A Forgotten World

Network ManagementNetwork Management

• Per Flow vs Per PacketPer Flow vs Per Packet

• Network StatisticsNetwork Statistics

• Network ConfigurationNetwork Configuration

• Optical SwitchingOptical Switching

Telecommunications Telecommunications SuccessesSuccesses• Switched VoiceSwitched Voice

• TELEXTELEX

• FACSIMILE - Group 3FACSIMILE - Group 3

• Mobile - including GSMMobile - including GSM

• World Wide WebWorld Wide Web

Telecommunications Telecommunications LemonsLemons• TeletexTeletex

• I.S.D.N.I.S.D.N.

• VideotextVideotext

• Low Flying Low Flying SatellitesSatellites

The New ChallengesThe New Challenges

• Network Network ManagementManagement

• New ServicesNew Services

• New ApplicationsNew Applications