Tuesday, April 24, 2007

How did VoIP come about?


Russel Shaw posted quite a nice article on his ZDNet blog. For everyone who's wondering how VoIP came about, what the original idea was, where VoIP originated from, here's part of the answer. VoIP's birth:

I would like to offer up a suggestion for a product, or perhaps I should say a technology. This is an idea that I had that is really an extension of existing products, but I want to go on record as proposing this now so that when someone gets the bright idea in a few months or years, I canpoint to this as "prior art" (the Telecom Archives ARE permanent, aren't they?).

The idea is this: At some point on the Internet you have a server that connects to the telephone network. It can detect ringing and seize (answer) the line, or it can pick up the line and initiate outdialing. So far all of this can be done using existing products (modems, forexample). But what I would then propose for this new technology is to take the audio from the phone line and convert it into an audio data stream that can be sent to another location on the Internet. In a similar manner, this product should be able to accept an audio stream from the Internet and send it out to the phone line.

On the user (client) end, a companion product (designed to work with the server) would operate similar to IPhone or another two-way voice over Internet product, except that when the server receives a ringing signal from the telephone line, it would sent a data packet to the user's program that would cause an audible (or other) signal to sound or appear on the video display of the user's computer.


Read more here....

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