Public Switched Telephone Network ◦ 100 years ◦ 1982 AT&T monopoly broken Competition entered telephony Car phones system Cellular system Satellite.

Public Switched Telephone Network◦ 100 years◦ 1982 AT&T monopoly broken

Competition entered telephony Car phones system Cellular system Satellite system VoIP Wifi

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

What do you need for equipment?◦ regular telephones◦ ATA (analog terminal adapter)◦ Broadband connection to the Internet

Modem Cable DSL Satellite

Computer◦ Skype◦ Softphone

Internet Protocol used to transport◦ Data◦ Voice◦ Images, include today – TV called (IPTV)

Electrical signals◦ Chopped up into chunks◦ Converted to binary (zeroes and ones)◦ Packaged as frames of bits◦ Delivered over media using the Internet Protocol

Data Voice

◦ Voice over IP (VoIP) Image

◦ TV over IP (IPTV) ◦ Fax over ip (FoIP)

Soon◦ Cellular systems could use VoIP

Protocols not yet IP◦ GSM (becoming world

standard)

◦ CDMA◦ EV DO◦ PCS◦ Iden◦ others

• Capabilities– Telephone– Internet Access– Text Messaging– Music– Calendars– Pda– Watch movies

Telephone◦ Cellular◦ WiFi

Internet◦ Internet Access◦ Text Messaging◦ Music◦ Calendars◦ Pda◦ Watch movies

All of this boils down to communications◦ Increase availability to all◦ Work productivity◦ Emergency assistance◦ Bottom line CONVIENENCE

What is next?