System and Methods for Detecting Unwanted Voice Calls

System and Methods for Detecting Unwanted Voice Calls

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Voice over IP (VoIP) is a key enabling technology for the migration of circuit-switched PSTN architectures to packet-based IP networks. However, this migration is successful only if the present problems in IP networks are addressed before deploying VoIP infrastructure on a large scale. One of the important issues that the present VoIP networks face is the problem of unwanted calls commonly referred to as SPIT (spam over Internet telephony). Mostly, these SPIT calls are from unknown callers who broadcast unwanted calls. There may be unwanted calls from legitimate and known people too. In this case, the unwantedness depends on social proximity of the communicating parties.VoIP Spam Detector The network diagram shown in Figure 4.1 is partitioned into network segments such as the call-receiving domain hereafter referred to as VSD domain (circled part in Figure 4.1) i.e., the domain for which the VSD acts as aanbsp;...

Title:System and Methods for Detecting Unwanted Voice Calls
Publisher:ProQuest - 2007

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