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Personal and Public Communication

http://www.youtube.com/watch?v=QB8UEBiNYsU

Do Cell Phones Cause Cancer?

Higher quality picture - Digital conversion takes out the “noise” from the signal.

Less bandwidth – digital data is compressed which allows for more “white space” for other data.

Compatibility with other digital devices--tv’s are now designed for digital/computer compatibility.

Digital TV – Why go digital?

With analog signals shut down, US and other countries are forced to get a converter box for analog (rabbit ear) TVs.

With analog, if the signal is weak, at least a fuzzy image will show. With digital, if a signal is not found, you will see nothing.

Limited color range (analog is unlimited)

Downside to digital TV?

http://www.youtube.com/watch?v=ZiuEKise5YU

http://video.foxnews.com/v/4640176/personal-tech-location-aware-services

GPS and Location Aware Apps

The worker◦ Advantages?

Flexible schedule, work in pajamas, more leisure time

◦ Disadvantages? Less people interaction, requires self-discipline,

workaholism, low visibility may cause boss to pass you up for promotion

Telecommuting – Advantages and Disadvantages

Management◦ Advantages?

Increased productivity, bigger pool to hire from, keep employees

◦ Disadvantages? Office resentment from those denied the opportunity,

may suffer from weakened corporate loyalty

Telecommuting – Advantages and Disadvantages

Society◦ Advantages?

Reduces number of commuters, saves energy, reduces pollution, reduces traffic congestion/accidents

More green society◦ Disadvantages?

Less face to face socialization, more isolation

Telecommuting – Advantages and Disadvantages

What is virtualization? http://www.youtube.com/watch?v=Gnmq97

yAK0Y◦ The ability to partition physical devices into

multilayers.◦ Different virtual machines can run different

operating systems and multiple applications on the same physical computer.

◦ Virtualization is different from cloud computing in that you control the servers.

◦ http://www.youtube.com/watch?v=MnNX13yBzAU

Virtualization and Mobile Devices

http://www.youtube.com/watch?v=Gnmq97yAK0Y

Virtual Desktop and Applications

VOIP – Voice over internet protocol – allows you to make telephone calls over the Internet.

SPIT – Spam over Internet Telephone SIP – Session Initiation Protocol – the technical protocol

for VOIP. Like HTTP is the Web protocol. ◦ SIP is one big set in the communication technology and VoIP

is a subset in that. ◦ SIP includes video and instant messaging communication. ◦ SIP establishes the communication channel.

http://www.youtube.com/watch?v=6Q_BrQpZfFE

VOIP

To use VOIP you need one of these:◦ A broadband modem and an ATA (Analog

Telephone Adaptor) ◦ VOIP equipped IP telephone◦ Computer with Internet connection

VOIP Equipment Needed

Two routes to go with VOIP:◦ Use free VOIP services (Skype, ◦ Sign up with a VOIP service provider which

charges a monthly fee.

VOIP Services

A great money saver for both businesses and residential users.

Integration with email, FAX, voicemail, and video technology

Enables mobility—phone can be used anywhere with broadband connection keeping the same phone number. You can keep your cell phone for personal use only and use the VOIP number for work only.

VOIP Advantages

There are a number of security issues including eavesdropping

The quality of voice is not as good as traditional telephony. It is mainly because it is susceptible to all the hurdles of Internet connection such as latency, jitter, packet loss etc.

Failure of precise user tracking in case of emergency 911 calling

VoIP is dependent on wall power

VOIP Limitiations

Before an interconnected VoIP provider can activate a new customer’s service, the provider must obtain from the customer the physical location at which the service will first be used, so that emergency services personnel will be able to locate any customer dialing 911.

VoIP providers must also provide one or more easy ways for their customers to update the physical location if they move.

Interconnected VoIP providers must transmit all 911 calls, as well as a callback number and the caller’s registered physical location, to the appropriate emergency services call center or local emergency authority.

Interconnected VoIP providers must obtain affirmative acknowledgement from all existing customers that they are aware of and understand the limitations of their 911 service.

VOIP and 911Regulation

Provide your accurate physical address to your VOIP provider.

Be familiar with your VoIP service provider’s procedures for updating your address, and promptly update address information in the event of a change.

Inform children, babysitters and visitors about your VoIP service and its 911 limitations.

If your power is out or your Internet connection is down, be aware that your VoIP service may not work. Consider installing a backup power supply, maintaining a traditional phone line or having a wireless phone as a backup.

VOIP Users Should…..

http://video.pbs.org/video/1829098130#

Should we always be connected?