Teletraffic engineering

Teletraffic engineering, also known as telecommunications traffic engineering, applies ideas from transportation traffic engineering to the world of telecommunications. Teletraffic engineers use math, statistics, and models to understand how traffic flows through networks like telephone systems and the Internet. They study patterns and behaviors to predict how well a network will perform and to plan improvements that keep services reliable while saving money.

This field began with the work of A. K. Erlang, who developed methods for circuit-switched networks. Today, these ideas help manage all kinds of networks, including those that use packet-switching, because they share common patterns that can be studied and predicted.

One key idea in teletraffic engineering is that when you look at very large systems over long periods, the overall behavior becomes much easier to predict. This helps engineers design networks that can handle lots of users without breaking down.