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Transcript
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