Photo: Packet switching is how data travels over the Internet. Currently most computers have IP addresses made fromįour pairs of two digits separated by points, such as 12.34.56.78. Which is a bit like the computer equivalent of a telephone number orīuilding address. "addressed" by quoting a unique number, known as its IP address, That you may be familiar with is that every computer can be Receive packets like this thankfully, they all agree to work inĮxactly the same way using exactly the same system, which is known as
#Multiple video calls on skype phone how to
More about how it works in our main article on how the Internet works.) All theĬomputers connected to the Internet understand how to send and
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To zip back and forth across the Net every single day. Handling the billions of emails, web pages, and everything else that has Switching is actually an extremely quick and efficient way of It might sound odd to send things this way, but packet
It's a bit like sending a book through the post not as a big fat parcelīut by putting every single page into a separate envelope, individually addressedĪnd dispatched. Reassembled into a copy of the original email when it arrives at itsĭestination. Which travels independently across the Internet (theoretically by aĬompletely different route from other packets) before being Something like an email, which mightīe pages and pages of characters, isn't actually sent as one bigĬhunk: when it leaves your computer, it's broken down into many small pieces called packets, each of Net-from the latest music videos on YouTube to the confirmationĮmail from Amazon that your book is on its way-is sent by a methodĬalled packet switching.
What is VoIP?Īll the information that travels over the Were able to figure out how to send telephone calls over the Net, (Technically, this is called the end-to-end principle.) That's why, in the mid-1990s, some clever technical people Information, in all kinds of different ways, between the variousĬomputers that it connects together, and without any kind of rewiring The Internet is designed so that it can send all kinds of Shopping sites, home videos, and so on that you browse from yourĬomputer) is just one of the things that uses the Internet email Internet is the worldwide network that links virtuallyĮvery modern computer on the planet, and it's made up ofįiber-optic cables, and old-fashioned copper wires. Things are really about the World Wide Web, not the Internet. YouTube videos or buying books from -but both of these To lots of people, using the Net means looking at How exactly does it work? WhatĪre the advantages and the drawbacks? Let's take a closer look!Īrtwork: VoIP means making telephone calls using your computer, with the sound of your voice converted to digital data that travels over the Internet using the Internet Protocol-in other words, in exactly the same way as Web pages, downloads, emails, or any other Internet data. Internet Protocol) which, simply stated, means using the Internet
That's the thinking behind VoIP (Voice Over Images, and video clips, it should be able to carry people's voices Relies on large parts of the telephone network) can carry text, Use a telephone network when most of us now have access to a veryĬredible alternative: the Internet. Reason why we should be paying through the nose, by the minute, to That's barely changed since the 19th! In the 21st century, there's no You're still stuck in the 20th century with telephone technology Last updated: May 31, 2021.ĭo you ever find yourself looking at your watchĪnd thinking "This call's costing me a fortune." If you do,
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