If someone is interested in having a fast internet communication, you should look into VOIP connections.  You should also know that data networks do not use circuit switching. Your Internet connection would be a lot slower if it maintained a constant connection to the Web page you were viewing at any given time. Instead, data networks simply send and retrieve data as you need it. And, instead of routing the data over a dedicated line, the data packets flow through a chaotic network along thousands of possible paths.

You should know that while circuit switching keeps the connection open and constant, packet switching opens a brief connection.  The sending computer sends the packet to a nearby router and forgets about it. The nearby router sends the packet to another router that is closer to the recipient computer. That router sends the packet along to another, even closer router, and so on.

Also, the sending computer chops data into small packets, with an address on each one telling the network devices where to send them.  Existing phone systems are driven by a very reliable but somewhat inefficient method for connecting calls called circuit switching.

It is good to know that circuit switching is a very basic concept that has been used by telephone networks for more than 100 years. When a call is made between two parties, the connection is maintained for the duration of the call. You would use all those pieces of wire just for your call for the full 10 minutes. You paid a lot for the call, because you actually owned a 3,000-mile-long copper wire for 10 minutes.  Telephone conversations over today's traditional phone network are somewhat more efficient and they cost a lot less.

Of course, your voice is digitized, and your voice along with thousands of others can be combined onto a single fiber optic cable for much of the journey. These calls are transmitted at a fixed rate of 64 kilobits per second (Kbps) in each direction, for a total transmission rate of 128 Kbps. Since there are 8 kilobits (Kb) in a kilobyte (KB), this translates to a transmission of 16 KB each second the circuit is open, and 960 KB every minute it's open. So in a 10-minute conversation, the total transmission is 9,600 KB, which is roughly equal to 10 megabytes.

Keep in mind that if you look at a typical phone conversation, much of this transmitted data is wasted.  While you are talking, the other party is listening, which means that only half of the connection is in use at any given time. Based on that, we can surmise that we could cut the file in half, down to about 4.7 MB, for efficiency. Plus, a significant amount of the time in most conversations is dead air. Packet switching is very efficient. It lets the network route the packets along the least congested lines.