digital com

8/6/2019 Digital Com

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Succeeding with Technology

Overview of DigitalCommunications




Digital Communications

Digital communications include allforms of modern electronic

communications.Personal communications involve

communications that take place

outside of industry – thi s is our focus.

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Personal Communications

Old Skool

Face-to-face In person

Voice Home phone

Business phone

Public booths

Text Snail mail

New Skool - Digital

Face-to-face Video Phone/Email/Chat

Voice Cell Phone

Voice Mail

Internet Phone/Chat

Text

Email Instant Messaging (IM)

SMS Texting




Types of Communication

Synchronous Communication takes place inreal time.Phone conversation

Instant Messaging Asynchronous Communication allows

participants to leave messages to beaccessed whenever.

Voice mailEmailSMS Texting




1. Face-to-face

2. Video conferencing

3. Phone (voice)4. Instant messaging/Chat

5. Voice mail

6. Email

7. SMS Texting

S y n

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n o u s

A s y n c

h r

o n o u s

E f f

e c t

i v e n

e s s

C o n

v e n

i e n c e

Effectiveness vs. Convenience




Emerging CommunicationsTechnologies


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Voice over IP (VoIP)

Technology thatenables network

managers to routephone calls over thesame network theyuse for data.

Future of Phones: http://newsroom.cisco.com/dlls/video_audio_archive/?all Also see Video Telephony

http://newsroom.cisco.com/dlls/video_audio_archive/?all

http://newsroom.cisco.com/dlls/video_audio_archive/?all



Residential VoIP

• Residential VoIP, Broadband Phone• Phone service over a broadband Internet

connection.

http://www.voipchoices.com/vonage.html





Video Conferencing

Video conferencing is a technologythat combines video and voicecommunications along with documentsharing.



Cell Phone Technology



Cellular Network

A cellular network is a radio network inwhich a geographic area is divided intocells, with a transmission tower andstation at the center of each cell, to

support mobile communications.



Generations

1st Gen – analog wireless signal

2nd Gen – digital wireless signal

3rd

Gen (3G) – broadband digitalnetwork that supports both voice anddata services such as video

Current 3G services are barely broadband3.5G with 3 Mbps data rates is under way



Generations

4th Gen The Wireless World Research Forum (WWRF) defines 4G as a

network that operates on Internet technology, combines it withother applications and technologies such as Wi-Fi and WiMAX,

and runs at speeds ranging from 100 Mbps (in cell-phonenetworks) to 1 Gbps (in local Wi-Fi networks). 4G is not just onedefined technology or standard, but rather a collection of technologies and protocols to enable the highest throughput,lowest cost wireless network possible. [wikipedia]

Anywhere, anytime computing.



Carriers

A cellular carrier is a company thatbuilds and maintains a cellular network and provides cell phone

service to the public.

See how they rate: www.consumerreports.org

GSM CDMA

http://www.verizonwireless.com/

http://www.consumerreports.org/

http://www.sprint.com/personal/wireless/


http://www.cingular.com/

http://www.tmobile.com/

http://www.consumerreports.org/



GSM and CDMA

Digital networking standardsfor cell phone networks areGSM and CDMA.

GSM CDMA

Cingular AT&TT-Mobile

VerizonSprintNextel

GSM: Global System

for Mobile

Communications

CDMA: Code division

multiple access

GSM CDMA



GSM and CDMA

GSM Covered in virtually all parts of the

world

Mature, more stable network with

robust features Less signal deterioration inside

buildings

Talktime is generally higher

Subscriber Identity Modules (SIM)

allows users to switch networksand handsets at will

interferes with some electronics,especially certain audio amplifiers

CDMA (IS-95) It can accommodate more users

uses soft handoff, reducing thelikelihood of dropped calls

has a well-defined path to higher data rates

are generally unable to roaminternationally

Smaller market so features are

sometimes late in coming toCDMA devices

every time you subscribe with anew provider you must buy a newphone

GSM CDMA


VerizonSprintNextel

http://en.wikipedia.org/wiki/Comparison_of_mobile_phone_standards

GSM CDMA





GSM and CDMA

GSM Phones include a subscriberidentity module (SIM) for securityand convenient data transfer

between phones.

GSM CDMA


VerizonSprintNextel



Choosing a Cell PhoneService

Consumers choose a carrier based oncoverage area, handsets available, andservices provided.

There are typically two service options: A pay-as-you-go plan is a prepay system in

which you buy minutes up front that must beused in a given time frame

Service contracts are typically for two yearsand involve finding a plan that best matchesyour usage




Calling plan option variables:Whenever, or anytime, minutes with no time restrictions

Weeknight minutes, typically Monday through Friday, 9:00 p.m. to5:59 a.m. or 6:59 a.m.

Weekend minutes, typically Saturday 12:00 a.m. to Sunday 11:59p.m.

Rollover minutes are leftover unused minutes passed on from onemonth to the next

Mobile-to-mobile, or in-network calls refers to phoning other users of

the same carrier. Roaming refers to making calls outside the carriers coverage area

using another carriers network




Fees: Using “additional minutes” beyond your service plan

agreement can cost big $ in fees

Roaming can cost big $ in fees




Cell Phone Technologies

Learn about Service Plans,Handsets, Features, and Servicesby clicking the logos below.

http://www.sprint.com/personal/wireless/


http://www.cingular.com/

http://www.tmobile.com/




Cell Phone Features

http://www.phonescoop.com/phones/finder.

Phone Finder In Depth

http://www.phonescoop.com/phones/finder.php

http://www.phonescoop.com/phones/finder.php




Cell Phone Technologies

Cell phone accessories provide addedfeatures for example… A 2 GB mini SD memory card can provide ample

storage digital photos, music, and video files.

A Bluetooth headset allows you to interact with your phone without taking it out of your pocket.

Car chargers allow you tocharge your cell phone from

your car power supply. Assorted cases protect cell

phones from damage andmake them handy to access.

Bluetooth Ear bud reviews: http://review.zdnet.com/4566-12523_16-0.html?sort=edRating16+desc

http://review.zdnet.com/4566-12523_16-0.html?sort=edRating16+desc

http://review.zdnet.com/4566-12523_16-0.html?sort=edRating16+desc




Wireless Technologies Bluetooth is wireless technology

that enables a wide variety of digital devices to communicate

directly.• 33 ft range

• 1 Mbps

• www.bluetooth.com

http://www.bluetooth.com/

http://images.google.com/imgres?imgurl=www.on-a-journey.com/images/headphones.gif&imgrefurl=http://www.on-a-journey.com/interact.htm&h=232&w=213&sz=17&tbnid=K3uDh6bZfZYJ:&tbnh=102&tbnw=94&prev=/images%3Fq%3DHeadphones%26hl%3Den%26lr%3D%26ie%3DUTF-8%26oe%3DUTF-8%26safe%3Doff

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http://www.bluetooth.com/



S cceeding ith Technolog

Bluetooth

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