Voice Over IP

Peter Cochrane

Changes will be mega-destructive…•BlueTooth

•Ultra Wideband

•WiFi + WiMax

•MP3

•Voice Over Internet Protocol (VOIP)

•Radio Frequency Identification (RFID)

•Blogs & Video Blogs

…are only the start

We can only guess/imagine whatour networks will be expected to support in the next decade/s…and it is the customers who decide and not the companies

Peter Cochrane1995

Network Laws - Broadcast

1

2

3

4

n

Connectivity = < n/2One way onlyNot all are always on

Network Laws - Telephone

1

2

3

4

n

< n/2

Broadcast1

3 4

5

2

< n(n-1)/2 ~n2

Bothways - Customer Control

Availability >99%

Network Laws - Internet

1

2

3

4

n

< n/2

Broadcast Telephone

< n(n-1)/2 ~n2

1

3 4

5

2

1

2

N

3

4

5

1 2 …nNn

Always - customer control

Availability >95%

How many friends do you have… ...how many people do you know?

Separation People You Know

0 => 30 => 3001 => 900 => 90,0002 => 27,000 => 27,000,0003 => 810,000 => 8,100,000,0004 => 24,300,0005 => 729,000,0006 => 21,870,000,000

The Telephone Network

Dedicated point to pointconnections based on oldanalogue technologiesspanning >100 years

Reliable, dependable, welldeveloped, well understood,but limited and in decline

QuickTime™ and aTIFF (Uncompressed) decompressor

are needed to see this picture.

QuickTime™ and aTIFF (Uncompressed) decompressor

are needed to see this picture.

QuickTime™ and aTIFF (Uncompressed) decompressor

are needed to see this picture.

QuickTime™ and aTIFF (Uncompressed) decompressor

are needed to see this picture.

From fixed line to…. …..Mobile

From talk to…. .Text

Millions

1996 1997 1998 1999 2000 2001 2002 2004 2005

1,400

1,200

1,000

800

600

400

200

0

WEB Mobile Phones

Cellular MobileCustomers

PC's onLine

Fixed Line Phones

VOIP MobileDevices

A dying circuit switchednetwork

A growing IPnetwork

PSTN v Packet Switched (IP - VOIP) Space

1Bn

2003 2005

Local Region National International Switches Gateway

X X X

X

X

X

X

X

X

X

Analogue Analogue Digital

Telephone Basics

IP - Packet Switched Networks

S

R

S

Server

Router/Switch

RR

RR

R

RR

Packets ofbits in serialtransmission

Packets arrive in wrong order & haveto be reassembled correctly

Voice Over Packet Switched Networks(VOIP)

S

R

S

Server

Router/Switch-Telephone-Mobile-Headset

RR

RR

R

RR

Telco VOIP

SRS

Server Router

-Telephone-Mobile-Headset

R X

Nailed DownRouters & Switches

Circuit to Packet …. Cost Reduced to 10%

Death to the PBX?

X WiFi/BlueTooth

Mobile/PDA

PBX

VOIPGateway

PSTNCircuit

SwitchedNetwork

InternetIntranet

A world of opportunity & risk….

Thank you,

cochrane.org.ukconceptlabs.net