A Brief Intro To VoIPMark Dodd |
If you have an ear open to new computer technologies, you are sure to have heard about VoIP. Voice over Internet Protocol (VoIP) is an emerging set of applications which allows you to make telephone calls over the Internet. It is already starting to replace existing telephone networks, with some people and businesses opting to cancel their traditional phone line and use VoIP instead.
VoIP was originally developed to provide voice communication between computer users in different locations. Although it still has this application, it has been further developed into a telephone network in its own right. People using VoIP can call any telephone anywhere in the world and can receive calls on telephone sets connected to the Internet or Local Area Network (LAN).
Background
It all started back in 1995 when Israeli computer enthusiasts made the first computer to computer voice connection. In the same year this technology was developed into a software package called Internet Phone Software. All that was needed to talk to another computer user was a modem, sound card, speakers, and a microphone.
The software digitized and compressed the audio signal before sending it over the Internet in data packets. These voice connections could only occur between computers which had the software installed. The sound quality was very poor -- nowhere near the quality of standard telephone connections.
The technology continued to be developed and by 1998 gateways had been established to allow PC-to-phone connections. Later that same year phone-to-phone connections that used the Internet for voice transmission were set in place. These phone-to-phone connections still required a computer to initiate the call, but once the connection was established, the callers could use a regular phone set.
VoIP Today
There are currently many VoIP services available for residential and commercial use. Some of these still rely on PC-to-PC connections but may offer other services such as PC-to-phone and phone-to-phone.
Internet phones are available that plug into the sound card or USB port of a computer. These phones may have number pads and ringers that allow you to use them the same as traditional telephones. The computer can be bypassed completely by connecting a phone directly to a broadband modem (either DSL or cable).
How Does It Work?
The first step in using VoIP is converting your voice into digital data. This is done by 'sampling' your voice -- dividing the analog sound signal into discrete steps that can be assigned a number value. Once your voice is digitized, the data can be compressed.
This compressed digital data is split up into 'packets' of about 1500 bytes that can be transferred over the Internet. As well as the voice data, the packets contain information about their origin, their destination, and a timestamp that allows them to be reconstructed in the correct order. Once they arrive at their destination, they are reassembled and converted from digital back into analog so that the receiving party can hear your voice.
In order for voice data to be transmitted without noticeable delays, a broadband Internet connection is necessary. Many households and businesses are already using broadband (either DSL or cable) so adding VoIP is relatively simple.
About the author:
Mark is a technology consultant in the great Orlando area. His
blog can be read online at http://www.voipblogonline.com.
The latest information and news on VoIP :
A new report is again indicating that The Bahamas Telecommunications Company (BTC) is being devalued due to illegal competition from long distance companies offering Voice over Internet Protocol (VoIP).
Polycom launches SoundPoint IP 430 VoIP phone (CIOL)
NEW DELHI:Polycom, Inc., provider of unified collaborative communications solutions, has added the SoundPoint IP 430 phone to its SIP based voice over Internet Protocol (VOIP) desktop phones portfolio. The newly launched phone is a two-line phone with a full-duplex speakerphone and graphical LCD.
Samsung SGH-P200 GSM/VOIP Hybrid Phone Sighted at FCC (AnandTech)
Cellular and VOIP services all in one handheld...
Consumers to flock to VoIP (theRegister via Yahoo! UK & Ireland News)
The traditional home phone number could become a thing of the past as more and more people opt for fixed-mobile services and VoIP. That's according to ...
VoIP Will Kill Off Traditional Landlines In Europe: Report (Small Biz Pipeline)
VoIP will kill off the use of traditional landlines in Europe, due to the appeal of new fixed-mobile telephone services, says two new reports by JupiterResearch.
X-Lite SIP VoIP Softphone Download (DesignTechnica)
Today's daily download is X-Lite SIP VoIP Softphone. Users who subscribe to a VoIP or Broadband service will be able to use this description.
Ennovative Commerce Solutions Installs VoIP from TelCove (CommsDesign)
JACKSONVILLE, Fla., June 9 /PRNewswire/ -- Ennovative Commerce Solutions, a Jacksonville-based developer of enterprise-class marketing and sales solutions, has installed a new, company-wide VoIP solution from TelCove, a leading provider of business critical telecommunications services to enterprise customers and carriers.
Consumers to flock to VoIP (The Register)
All change The traditional home phone number could become a thing of the past as more and more people opt for fixed-mobile services and VoIP.?
Tiscali unveils VoIP service (The Register)
VoIPtastic Tiscali - which recently clocked up one million broadband lines in the UK - has unveiled details of a new VoIP service.?
Fusion Softphone Turns Computer into VoIP Telephone (IT Observer)
Fusion Telecommunications International has announced that it has completed the first version of its proprietary computer-based efonica telephone, or 'softphone,' a software application that transforms a personal computer into a VoIP telephone. Concurrent with the launch of Fusion?s new, efonica-branded VoIP services later this month, customers will be able to download a beta version of the