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Journals and Conferences
The paper presents an in depth study of the time between retried calls by analyzing the distribution properties in the 0-5 minutes, 5-60 minutes and 1-180 hours intervals. For this study a large quantity of real life data was used (5.5 million calls from 2007-05 to 2008-09) coming from a prepaid long distance voice over internet protocol (VoIP) provider.… (More)