A unit of telecommunications traffic equal to one or more calls or other communications having an aggregate duration of one second. The call minute (Cmin) and call hour (Ch) are defined similarly
Russ Rowlett (Director), How Many? A Dictionary of Units of Measurement, Center for Mathematics and Science Education University of North Carolina, USA 2005. http://www.unc.edu/~rowlett/units/dictA.html, (Unit of Meas and Covr Factors - Amer) {608}