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Dated: Nov. 02, 2005

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Internet Telephony & VoIP

VoIP is another Internet-based communications method which is growing in popularity. VoIP hardware and software work together to use the Internet to transmit telephone calls by sending voice data in packets using IP rather than by traditional circuit transmissions, called PSTN (Public Switched Telephone Network). The voice traffic is converted into data packets then routed over the Internet, or any IP network, just as normal data packets would be transmitted. When the data packets reach their destination, they are converted back to voice data again for the recipient. Your telephone is connected to a VoIP phone adapter (considered the hardware aspect). This adapter is connected to your broadband Internet connection. The call is routed through the Internet to a regular phone jack, which is connected to the receiver's phone. Special hardware (the phone adapter) is required only for the sender.

Many Internet telephony applications are available. Some, such as CoolTalk and NetMeeting, come bundled with popular Web browsers. Others are stand-alone products. Internet telephony products are sometimes called IP telephony, Voice over the Internet (VOI) or Voice over IP (VoIP) products.

Much like finding an Internet service provider (ISP) for your Internet connection, you will need to use a VoIP provider. Some service providers may offer plans that include free calls to other subscribers on their network and charge flat rates for other VoIP calls based on a fixed number of calling minutes. You most likely will pay additional fees when you call long distance using VoIP. While this sounds a lot like regular telephone service, it is less expensive than traditional voice communications, starting with the fact that you will no longer need to pay for extras on your monthly phone bill

E-mail

Short for electronic mail, e-mail is the transmission of messages over communications networks. The messages can be notes entered from the keyboard or electronic files stored on disk. Most mainframes, minicomputers and computer networks have an e-mail system. Some e-mail systems are confined to a single computer system or network, but others have gateways to other computer systems, enabling you to send electronic mail anywhere in the world.

Using an e-mail client (software such as Microsoft Outlook or Eudora), you can compose an e-mail message and send it to another person anywhere, as long as you know the recipient e-mail address. All online services and Internet Service Providers (ISPs) offer e-mail, and support gateways so that you can exchange e-mail with users of other systems. Usually, it takes only a few seconds for an e-mail to arrive at its destination. This is a particularly effective way to communicate with a group because you can broadcast a message or document to everyone in the group at once.

One of the biggest problems of email is spam. Though definitions vary, spam can be considered any electronic junk mail (generally e-mail advertising for some product) that is sent out to thousands, if not millions, of people. Trojans and viruses can also be spreaded through email.

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lexie's Comment
that was good...but there is a typo in the last sentence:)
04 Tue Oct 2011
Admin's Reply:

 Hi Lexie 

thank you very much for pointing it out  :)




DhiliBabu's Comment
Thank u
22 Wed Dec 2010
Admin's Reply:

You're Welcome!




Tuhin's Comment
bravo....
19 Sat Jun 2010
Admin's Reply:

I'm glad you liked it.




mesi's Comment
good
19 Sat Jun 2010
Admin's Reply:

Thanks






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