EFCI

Teletraffic engineering is a well-understood discipline in the traditional voice network, where traffic patterns are established, growth rates can be predicted, and vast amounts of detailed historical data are available for analysis. However, for modern broadband networks, the teletraffic engineering methodologies used for voice networks no longer suffice [1]. Various aspects relating to teletraffic engineering in broadband networks are discussed in this article.
See more at Wikipedia.org...