End-to-End Call Authorization in Public Telephony
Joel Samper, Aspen Olmsted · 2021
More than a decade of papers talking about preventing SPIT (SPam over Internet Telephony), yet we still receive spam calls these days. We recover here an old proposal about issuing secret codes to potential callers, which they are to provide on each call-in order to prove legitimacy. As an up-to-date contribution, we suggest an out […]