A Review of Methods for Preventing Spam in IP Telephony
نویسندگان
چکیده
منابع مشابه
A Review of Methods for Preventing Spam in IP Telephony
Voice over IP telephony reduces communications costs, but it is also subject to spam, i.e. unwanted, unsolicited calls. This paper discusses the problem of spam over IP telephony and reviews published techniques to reject likely nuisance callers. The techniques investigated include content filtering, black lists, white lists, gray lists, call rate monitoring, IP/domain correlation, reputation s...
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Unsolicited emails, more commonly known as spam, have plagued the use and efficiency of email since its inception. With the introduction of ungoverned cheap voice communications, such as IP telephony, spam over telephony (SPIT) and its prevention is set to dominate and drive whether the technology is widely adopted or not. A possible example of voice spam schemes includes the use of Interactive...
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A method is presented which analyses the audio speech data of voice calls and calculates an “acoustic fingerprint”. The audio data of the voice calls are compared with each other based on spectral parameters and voice calls are identified which have a high degree of similarity. The method which is resistant to various modifications of the audio signal can be used to detect SPIT which is typical...
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Spam over Internet Telephony (SPIT) is a potential source of disruption in Voice over IP (VoIP) systems. The use of anti-SPIT mechanisms, such as filters and audio CAPTCHA (Completely Automated Public Turing Test to Tell Computer and Humans Apart) can prevent
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ژورنال
عنوان ژورنال: Modern Applied Science
سال: 2013
ISSN: 1913-1852,1913-1844
DOI: 10.5539/mas.v7n7p48