Transcript 3-Telephony VoIP

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Public Switched Telephone Network
◦ 100 years
◦ 1982 AT&T monopoly broken
 Competition entered telephony
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Car phones system
Cellular system
Satellite system
VoIP
Wifi
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Voice over the Internet Protocol (IP)
◦ Vonage
 A viable service
 Being attacked by at@t, Verizon, others
◦ Sun Rocket
 went broke 2007
◦ Ooma (just introduced Thursday last week)
◦ Verizon
◦ at&t
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What do you need for equipment?
◦ regular telephones
◦ ATA (analog terminal adapter)
◦ Broadband connection to the Internet
 Modem
 Cable
 DSL
 Satellite
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Computer
◦ Skype
◦ Softphone
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Internet Protocol used to transport
◦ Data
◦ Voice
◦ Images, include today – TV called (IPTV)
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Electrical signals
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Chopped up into chunks
Converted to binary (zeroes and ones)
Packaged as frames of bits
Delivered over media using the Internet Protocol
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Data
Voice
◦ Voice over IP (VoIP)
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Image
◦ TV over IP (IPTV)
◦ Fax over ip (FoIP)
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Soon
◦ Cellular systems could use VoIP
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Protocols not yet IP
◦ GSM
(becoming world
standard)
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CDMA
EV DO
PCS
Iden
others
• Capabilities
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Telephone
Internet Access
Text Messaging
Music
Calendars
Pda
Watch movies
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Telephone
◦ Cellular
◦ WiFi
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Internet
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Internet Access
Text Messaging
Music
Calendars
Pda
Watch movies
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All of this boils down to communications
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Increase availability to all
Work productivity
Emergency assistance
Bottom line CONVIENENCE
What is next?