VOIP technology is a one way of sending a voice signal also known as an analog signal in a medium which is digital, i.e, the internet. In practice, the process works like this when you have a standard analog telephone attached to your high speed internet connection with VOIP service. There will be an analog telephone adapter or ATA between the phone and the computer.
In order to place what would normally be a long distance call to a person who doesn’t have VOIP service you key in the number you want. The analog telephone adapter converts the touch tones into a digital format. The digital phone number is sent by the analog telephone adapter to the VOIP routing system at the service provider’s location. The VOIP service provider is located on the internet as well.
The VOIP service provider’s routing system identifies the recipient’s location and sends the call to the Public Switched Telephone Network (PTSN) at that location. The phone rings at the other end and the conversation can begin. Each time you speak, the analog to digital converter in the analog telephone adapter changes the voice tones into packets of digital information that can be transmitted across the internet. When the VOIP service meshes with the Public Switched Telephone Network at the recipient’s end, the digital packets which are the voice tones from you get turned back into an analog signal so that you recipient of your call can understand what you are saying.
The reverse process, i.e. the transmission of what the other person says to you is a mirror image of the first process. Their voice is transformed from analog to digital when it gets to the PSTN/internet connection. The digital packets are sent to the analog telephone adapter at your location where they are converted back into an audible or analog signal to be able to perceive the voice as that of your caller.
The technology to do the conversion from analog to digital and back again has been around as long as digital electronics. For example, your PC sound card converts digital CD information to analog signal needed by the speakers on your computer. The difficult part of the VOIP technology is the necessity to smoothly transmit the digital data over the internet and reassemble it in a continuous stream. This is know as the protocol.
When listening to voice transmission, there can be no gaps in the stream of digital packets or the voices will not be understandable. This part of the technology has only recently been available, but is actually equal or better in quality than you get with standard telephone networks.
The equipment available today that uses VOIP technology can be an analog telephone adapter for your head set through the computer. There are a few VOIP phones that act like a regular analog telephone but have the ATA incorporated into the phone. It’s actually a small dedicated personal computer in your telephone. These VOIP phones can be plugged into the computer with high speed internet connection or into the router.
By: Simon Ahtung
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VoIP which stands for Voice over Internet Protocol refers to the audio routing conversations via cyberspace or any other network which are IP-based. VoIP communications protocols or Voice over IP Protocols is used for carrying audio signals over information processing networks.
VoIP alters the whole perspective of people concerning long distance calls. In this technique, the Voice analog signals are being changed to digital information which are transferred through the Net. The basic connection of the Net becomes a way in putting telephone calls free of charge. Using VoIP software system for free is the practical way of saving money and getting around telephone companies and their whole charges.
VoIP is an advanced technology with an ability to retread the telephone system absolutely everywhere in the world.
Using VoIP for testing is not a problem because there are a lot of VoIP software systems available in the Net free of charge. All you have to do is to download and install it which takes around 3 to 5 minutes. To trial run it, you may ask a friend to do the same and check it if it’s really working. This is an excellent way.
VoIP are used by almost all telephone companies in streamlining their networks. They’re routing calls via IP getaway and circuit switch bringing down the bandwidth they’re using for long hauls. As soon as the getaway gets the calls, the other side would route, reassemble, and decompress it locally in a circuit switch.
This would take time however the current networks of circuit-switched are substituted by a technology known as packet-switching. The information networks simply retrieve and transmit data if the user requires it. It doesn’t let routing of data thru dedicated line as an alternative it lets moving of data packets through disorganized networks supplied with several possible courses. It only opens brief connections to send the packets (small piece of data) from systems to systems. This technique is really effective since packets flow through the cheapest and minimum congested lines whilst still letting both communicating computers to accept data.
VoIP technology truly makes sense both in infrastructure and economics necessities. A lot of businesses are setting up the VoIP systems and this technology can and will grow more in popularity making its way for home use. VoIP is an amazing find in bettering conventional telephone system to become really efficient and a dependable way of communication.
By: Kamran Chy
