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

Voice Over IP (Illustration)

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)

Network Security

Encryption Dedicated (leased) lines VPN

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

Cellular Service (Illustration)

The Cellular Revolution

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

GPS Illustration

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

WiMAX

Wide area wi-fi Sprint, AT&T, Google WiMAX cells can cover up to 3000

square miles

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

RFID (Privacy Concerns)

Imagine what I could learn with an RFID tag embedded into your credit card

RFID (Types)

Active tags have their own power source

Passive tags get power from the RFID reader

Mobile Workforce Trends

Social networking gets mobilized Mobile TV Multi-function devices become cheaper and

more versatile Location-based services Mobile advertising Wireless providers move into home

entertainment Wireless security moves to the forefront Enterprise mobility