University of Tuzla
Voice spam is defined as unsolicited bulk calls each resulting in a media session, where the content delivered to phone or voice terminal may include voice, images or video. There are several different kinds of voice spam, i.e. advertisement, telephone polls and telemarketing. Spam in Internet telephony networks is likely to become a large problem in the future, as more and more people and companies switch from traditional telephone networks to Voice over IP (VoIP) networks. VoIP spam is likely to have a great strain on the network.