Data transfer statistics in Internet dial-up sessions

This letter reports the results of a measurement campaign aimed at characte rizing the traffic in Internet dial-up sessions. This is done at the data t ransfer level, i.e. considering the average data rate and the volume of dat a transferred during calls to Internet service providers. Major statistics (mean and two percentile values) are provided for both quantities with a ho urly time resolution together with the empirical probability density functi ons relative to the peak hour.