Patent ID: 8369503

Claim:
A computer implemented method for managing false answer supervision in a telephony network, comprising the steps of: accessing a call record comprising a plurality of call events occurring at a terminal gateway serving a called device at a destination in said telephony network; detecting false answer supervision call events originating at said terminal gateway, comprising the steps of: analyzing suspect illegitimate call events from said call events based on a combination of a plurality of conditions associated with call initiation, call disposition, call duration, and call billing events, wherein said suspect illegitimate call events comprise said false answer supervision call events and poor audio quality call events; filtering said suspect illegitimate call events for detecting events suspected of said false answer supervision based on call answer delay and call hold time; confirming said false answer supervision call events after discounting said suspected false answer supervision call events based on whether a proportion of said suspected false answer supervision call events is within a false answer supervision threshold, wherein said false answer supervision threshold is determined based on expected characteristics of said terminal gateway and said destination; deriving a statistical inference of current behavior and past behavior of said terminal gateway for inferring non-compliant behavior of said terminal gateway over predetermined periods of time; and notifying a service provider associated with said terminal gateway of said non-compliant behavior for remedying said non-compliant behavior.