Patent ID: 9203952
Filing Date: 2015-12-01
Classification: H04L,H04M

Abstract:
1. A method executed by a false answer supervision detector, which is communicatively coupled to a network that has at least one route provided for completing calls by customers, for detecting false answer supervision, the method comprising: determining for each route an indicator of false answer supervision as either: i) a function of a ratio of a number of completed calls of short duration to a number of hangups, the ratio determined by excluding from a number of completed calls, a number of completed calls of long duration to yield the number of completed calls of short duration and excluding from a number of attempted calls, the number of completed calls to yield the number of hangups or ii) a function of a distribution of differences between timestamps of ringing signals and timestamps of connect signals used to complete calls; detecting false answer supervision for a subject route based on the indicator of false answer supervision so determined by either functions separately or in combination; and affecting a decision about the subject route in response to the detecting.