Key points are not available for this paper at this time.
Two-way conversation is arbitrarily defined in terms of vocal intervals and the pauses between them. These quantities, as determined by the presence or absence of speech energy, have been measured from continuous oscillograms of calls on a New York-Chicago telephone circuit used for Bell System business, and the results of statistical analyses of these data are presented.
Norwine et al. (Fri,) studied this question.