CHAPTER SEVEN Networks, Telecommunications, and Mobile Technology.
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Transcript of CHAPTER SEVEN Networks, Telecommunications, and Mobile Technology.
The Telecommunications Revolution
It began with the deregulation of AT&T in 1986 AT&T sold long distance 7 baby bells were formed Since then, there has been much M & A activity At this point, it was all POTS
Sprint was formed and sold long distance MCI was formed and sold long distance Natural gas pipeline companies and others selling
bandwidth Cable TV is not just for television anymore VOIP (Vonage, Skype and others)
Trends and Focus Items
From proprietary networks to open systems TCP/IP XML
From analog signals to digital signals
From copper wires to fiber Wireless, wireless, wireless
There are different wireless standards
Key Terms (1)
Telecommunication system - enable the transmission of data over public or private networks
Network - a communications, data exchange, and resource-sharing system created by linking two or more computers and establishing standards, or protocols, so that they can work together
Key Terms (2)
Local area network (LAN) - is designed to connect a group of computers in close proximity to each other such as in an office building, a school, or a home.
Wide area network (WAN) - spans a large geographic area, such as a state, province, or country
Metropolitan area network (MAN) - a large computer network usually spanning a city
Key Terms (3)
Virtual private network (VPN) - a way to use the public telecommunication infrastructure (e.g., Internet) to provide secure access to an organization’s network
Valued-added network (VAN) - a private network, provided by a third party, for exchanging information through a high capacity connection
The Internet Revolution
The Internet changes everything (Jeff Bezos – Amazon.com)
The Internet changes nothing (Len Bosac - Cisco)
Metcalfe’s Law
The usefulness of a network equals the square of the number of users
2,300,000,000(2,300,000,000 – 1)
Using the Net for a Competitive Advantage
Voice over IP (VOIP) Networking business Increasing the speed of business
Optimizing business efficiency
Voice Over IP
Skype was one of the first Vonage AT&T and Cable providers Cisco
Many companies use VOIP to reduce telephony charges
Increasing the Speed of Business
Bandwidth - is the difference between the highest and the lowest frequencies that can be transmitted on a single medium, and it is a measure of the medium's capacity
Types of Channels
Physical Twisted pair 2MB to 100MB Coax (Ethernet) 200MB to 500mb Fiber 320+ GB
Wireless Microwave 200MB Satellite 200+MB Bluetooth (1MB)
Mobility (Terms)
Mobile means the technology can travel with the user, but it is not necessarily in real-time Hand-held devices that dock when the
user returns to the office
Wireless gives users a live (Internet) connection via satellite or radio transmitters
Mobility (Examples)
FedEx and UPS hand-held devices (real-time wireless connections)
Budweiser (Hand-held devices with docking stations)
Season pass scanners
Cell Phones and PDAs
In 10 years, the PC might be obsolete
Blackberries have permeated business
The iPhone A 25 billion dollar industry in apps
Bandwidth allows for the convergence of voice, video, and data
Satellite Technologies
They use microwaves Terrestrial microwaves Geosynchronous satellites
Require line of sight Good for remote locations Slow upload speeds Iridium http://www.iridium.com/
Global Positioning Systems
24 satellites transmit constantly Your GPS receives these signals and
triangulates your position
Geographical Information Systems (Introduction)
GIS integrates: Spatial database Query engine Rendering and mapping engine
Use with GPS Demo at http://www.esri.com/software/arcgis/
arcinfo/about/demos.html
RFID
This is a hot topic My Heavenly ski pass has an RFID
tag Retailers used RFID in certain items
for loss prevention Use on shipping containers Wal-Mart uses RFID on all palletized
shipments Wynn uses them in it’s casino chips