Telephone

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The telephone (from the Greek: τῆλε, tēle, "far" and φωνή, phōnē, "voice") is a telecommunications device that transmits and receives sound, most commonly the human voice. It is one of the most common household appliances in the developed world, and has long been considered indispensable to business, industry and government. The word "telephone" has been adapted to many languages and is widely recognized around the world.

The device operates principally by converting sound waves into electrical signals, and electrical signals into sound waves. Such signals when conveyed through telephone networks — and often converted to electronic and/or optical signals — enable nearly every telephone user to communicate with nearly every other worldwide. Graphic symbols used to designate telephone service or phone-related information in print, signage, and other media include ℡, ☎, ☏, and ✆.

For more information about Telephone, read the full article at Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.


News tagged with phone

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GPS cell phone apps challenge standalone devices

Electronics / Consumer & Gadgets

created Nov 28, 2009 | popularity 3.6 / 5 (5) | comments 2

(AP) -- The growth of cell phones with global-positioning technology is making life uncertain for the makers of personal navigational devices that help drivers figure out where they are and where to go.


Teachers begin using cell phones for class lessons

Technology / Hi Tech

created Nov 27, 2009 | popularity 2 / 5 (2) | comments 0

(AP) -- Ariana Leonard's high school students shuffled in their seats, eagerly awaiting a cue from their Spanish teacher that the assignment would begin. "Take out your cell phones," she said in Spanish.


Bling bling with your ring ring: Dekoden craze sees cell phones get a touch of glitz, glamour

Electronics / Consumer & Gadgets

created Nov 27, 2009 | popularity not rated yet | comments 0

Cell phone owners are ringing the changes and putting a smile on their dial by adorning their mobiles with ornamental stickers, charms and beads -- and the craze just keeps getting bigger.


Gift Guide: Accessories to jazz up mobile phones (AP)

Gift Guide: Accessories to jazz up mobile phones

Electronics / Consumer & Gadgets

created Nov 27, 2009 | popularity not rated yet | comments 0

People you know have spent small fortunes on shiny new smart phones such as the iPhone 3GS, a BlackBerry or the Droid. But the devices still don't have all the features they want.


Lenovo buying back mobile phone business

Technology / Business

created Nov 27, 2009 | popularity not rated yet | comments 0

(AP) -- Personal computer maker Lenovo Group said Friday it is joining the race to develop products that link phones and PCs by buying back a mobile phone business that it sold last year.


Apple's iPhone set to make splash in South Korea (AP)

Apple's iPhone set to make splash in South Korea

Technology / Business

created Nov 27, 2009 | popularity not rated yet | comments 0

(AP) -- The iPhone's arrival in South Korea is generating considerable buzz among consumers and industry watchers amid expectations it will shake up a market dominated by world-beating domestic manufacturers.


EU assembly adopts Internet, phone user rights

Technology / Telecom

created Nov 25, 2009 | popularity 4 / 5 (2) | comments 1

(AP) -- The European Parliament has endorsed new telecom rules that would give phone and Internet users more rights and allow them to appeal to national courts if they are cut off for illegal file-sharing.


The number of text messages that a mobile user in S.Korea can send out a day has been restricted to 500, down from 1,000

S.Korea halves ceiling on text messages to fight spam

Technology / Telecom

created Nov 25, 2009 | popularity not rated yet | comments 0

South Korean authorities on Wednesday halved the daily limit on text messages sent out by mobile phones as part of a campaign against spam, officials said.


Nokia to ax 220 R&D jobs in Japan

Technology / Business

created Nov 24, 2009 | popularity not rated yet | comments 0

(AP) -- Nokia Corp. said Tuesday it is axing 220 jobs at research and development units in Japan as the world's largest mobile phone maker continues to cut costs.


EU drops Qualcomm antitrust probe

Technology / Business

created Nov 24, 2009 | popularity not rated yet | comments 0

(AP) -- European Union antitrust regulators on Tuesday dropped a monopoly abuse probe into wireless chip maker Qualcomm Inc. after mobile phone companies withdrew complaints about high royalty fees.


Joost assets bought by online ad company Adconion

Technology / Business

created Nov 24, 2009 | popularity not rated yet | comments 0

(AP) -- The struggling online video startup Joost, begun with much fanfare by the creators of Skype and Kazaa, has been sold to an online advertising company.


The Symbian platform is used on almost 50% of mobiles worldwide

Spotify launches application for Nokia phones

Technology / Software

created Nov 23, 2009 | popularity not rated yet | comments 0

Swedish streaming software Spotify announced on Monday the launch of a music application for the Symbian platform, used by the world's biggest mobile phone maker Nokia and other smartphones.


A woman uses her mobile phone near a share prices board in Tokyo

Mobile multimedia revenues tipped to dethrone text

Technology / Telecom

created Nov 23, 2009 | popularity not rated yet | comments 0

Multimedia services will surpass text messaging this year as the main source of mobile operators' non-voice revenue in the Asia-Pacific region, industry analyst IDC said Monday.


Skype A

EBay completes sale of Skype for $2 billion

Technology / Business

created Nov 20, 2009 | popularity not rated yet | comments 0

(AP) -- EBay has completed its sale of Skype for about $2 billion to an investor group that included the founders of the Internet phone service.


Microsoft Office 2010 beta ready to download

Technology / Software

created Nov 19, 2009 | popularity not rated yet | comments 0

If you want to try out Microsoft Office 2010, the beta is available for anyone to download, the company announced at the Microsoft Professional Developers Conference.