Patent ID: 8681783

Claim:
A network device-implemented method, comprising: receiving, by the network device, a call request to initiate a voice over Internet Protocol (VoIP) call, the call request being issued by a computing device on behalf of a calling party that is placing a call between a telephone device of the calling party, that is different than the computing device, and a telephone device of the called party; analyzing, by the network device, marker information in the call request to determine whether the call request, issued by the computing device on behalf of the calling party, was validly issued by the computing device; analyzing, by the network device, the call request, based on call pattern information of a quantity of other calls, to determine whether the call request is suspicious; and initiating, by the network device, completion of the call based on the determination of whether the call request was validly issued and the determination of whether the call request is suspicious.