voice over ip peter cochrane. changes will be mega-destructive… bluetooth ultra wideband wifi +...
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Voice Over IP
Peter Cochrane
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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
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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
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Network Laws - Broadcast
1
2
3
4
n
Connectivity = < n/2One way onlyNot all are always on
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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%
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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%
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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
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The Telephone Network
Dedicated point to pointconnections based on oldanalogue technologiesspanning >100 years
Reliable, dependable, welldeveloped, well understood,but limited and in decline
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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
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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
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Local Region National International Switches Gateway
X X X
X
X
X
X
X
X
X
Analogue Analogue Digital
Telephone Basics
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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
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Voice Over Packet Switched Networks(VOIP)
S
R
S
Server
Router/Switch-Telephone-Mobile-Headset
RR
RR
R
RR
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Telco VOIP
SRS
Server Router
-Telephone-Mobile-Headset
R X
Nailed DownRouters & Switches
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Circuit to Packet …. Cost Reduced to 10%
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Death to the PBX?
X WiFi/BlueTooth
Mobile/PDA
PBX
VOIPGateway
PSTNCircuit
SwitchedNetwork
InternetIntranet
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A world of opportunity & risk….
Thank you,
cochrane.org.ukconceptlabs.net