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Intro To Voice Over Internet Protocol -- Save Money With Every
By Ron King, Sat Dec 10th
You've probably heard about Voice over Internet Protoco(abbreviated VoIP or VOIP). It is one of the hottest computertechnologies today.
VoIP was developed to provide voice communication betweencomputer users at different locations. Although still used inthis manner, it's been developed much further -- into afull-fledged telephone network that allows us to place telephonecalls through the Internet.
People who use VoIP can place calls to any telephone anywhere inthe world. The calls are received on telephone sets connected tothe Internet or Local Area Network (LAN). VoIP is alreadyreplacing some telephone networks with people and businessescanceling their traditional phone lines in favor of the costsavings of VoIP.
Background
Israeli computer enthusiasts were the first to makecomputer-to-computer voice connections back in 1995. That sameyear, the technology was further developed into a softwarepackage called Internet Phone Software. All you needed to speakwith another computer user then was a modem, sound card,speakers, and microphone.
The software digitized and compressed audio signals beforesending them over the Internet. These voice connections onlyoccurred between computers equipped with the software. Theoriginal sound quality was very poor.
Technology progressed. By 1998 gateways had been establishedallowing PC-to-phone connections. Later that year phone-to-phoneconnections using the Internet for voice transmission were inplace. Phone-to-phone connections still required a computer toinitiate the call, but once the connection was established,callers could use a standard phone set.
That Was Then -- This Is Now
There are now a variety of VoIP services
available, for bothresidential and commercial use. Some continue to rely onPC-to-PC connections, but may also offer PC-to-phone andphone-to-phone services.
There are phones that plug into a sound card or USB port of acomputer. These phones may have number pads and ringers thatallow you to use them just like conventional telephones. Thecomputer can even be bypassed completely by connecting a phonedirectly to a broadband modem (either DSL or cable).
How Does VoIP Work?
The first step in using VoIP is converting your voice intodigital data. This is done by 'sampling' your voice. The analogsound signal is divided into distinct steps that can be assignednumber values. After your voice is digitized, the data can becompressed.
The compressed digital data is then split into 'packets' ofabout 1500 bytes that can be transferred via the Internet. Inaddition to voice data, the packets contain information abouttheir origin, destination, and a time-stamp that permits areconstruction in the exact order. When the packets arrive attheir destination, the data are reassembled and converted backto analog. The receiving party then -- voila -- hears yourvoice.
A broadband Internet connection, however, is needed to speed upvoice data transmission. Many households and businesses arealready using broadband, either DSL or cable, which makes addingVoIP fairly simple.
So, if saving money is on your To Do list for this year, checkout VoIP.
About the author:Ron King is a full-time researcher, writer, and web developer.Visit http://www.voip-solutions-now.com to learn more about thissubject.
Copyright 2005 Ron King. This article may be reprinted if theresource box is left intact.
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