Transcript VOIP - Archive - Peter Cochrane

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 what
our networks will be expected to
support in the next decade/s…and
it is the customers who decide and
not the companies
Peter Cochrane
1995
Network Laws - Broadcast
1
2
3
Connectivity = < n/2
One way only
Not all are always on
4
n
Network Laws - Telephone
Broadcast
1
2
1
2
5
3
4
3
n
< n/2
4
< n(n-1)/2 ~n2
Bothways - Customer Control
Availability >99%
Network Laws - Internet
1
Broadcast
Telephone
2
3
1
1
2
2
5
3
5
4
3
4
n
< n/2
4
< n(n-1)/2 ~n2
N
1
Nn
2 …n
Always - customer control
Availability >95%
How many friends do you have…
...how many people do you know?
Separation
0
1
2
3
4
5
6
=>
=>
=>
=>
=>
=>
=>
People You Know
30
900
27,000
810,000
24,300,000
729,000,000
21,870,000,000
=>
=>
=>
=>
300
90,000
27,000,000
8,100,000,000
The Telephone Network
Dedicated point to point
connections based on old
analogue technologies
spanning >100 years
Reliable, dependable, well
developed, well understood,
but limited and in decline
From fixed line to…. …..Mobile
From talk to…. .Text
QuickTime™ and a
TIFF (Uncompressed) decompressor
are needed to see this picture.
QuickTime™ and a
TIFF (Uncompressed) decompressor
are needed to see this picture.
QuickTime™ and a
TIFF (Uncompressed) decompressor
are needed to see this picture.
QuickTime™ and a
TIFF (Uncompressed) decompressor
are needed to see this picture.
PSTN v Packet Switched (IP - VOIP) Space
Millions
1,400
Cellular Mobile
Customers
1,200
1Bn
1,000
800
600
400
WEB
Mobile
Phones
A dying circuit switched
network
A growing IP
network
PC's on
Line
VOIP
Mobile
Devices
200
0
1996 1997 1998 1999 2000 2001 2002
2003
2004 2005
2005
Analogue
Analogue
Digital
Telephone Basics
Local
X
Region National
Switches
X
X
X
X
X
X
X
International
Gateway
X
X
IP - Packet Switched Networks
Router/Switch
Packets of
bits in serial
transmission
Server
R
S
R
R
R
R
R
R
R
S
Packets arrive in
wrong order & have
to be reassembled
correctly
Voice Over Packet Switched Networks
(VOIP)
-Telephone
-Mobile
-Headset
Router/Switch
Server
R
S
R
R
R
R
R
R
R
S
Telco VOIP
-Telephone
-Mobile
-Headset
Server
S
Router
R
X
R
S
Nailed Down
Routers & Switches
Circuit to Packet …. Cost Reduced to 10%
Death to the PBX?
Mobile/
PDA
VOIP
Gateway
PBX
X
PSTN
Circuit
Switched
Network
WiFi/BlueTooth
Internet
Intranet
A world of opportunity & risk….
Thank you,
cochrane.org.uk
conceptlabs.net