Patent ID: 9042535
Filing Date: 2015-05-26
Classification: H04B

Abstract:
1. A method, comprising: receiving, at an echo control device, an input send signal from an endpoint; determining a first echo return loss based on an echo tail of the input send signal; delaying a second determination of a second echo return loss for a predetermined time period; determining the second echo return loss subsequent to the determination of the first echo return loss; determining a high threshold and a low threshold based on a difference between the first echo return loss and the second echo return loss; operating a conference bridge in a pass through mode, due to the second echo return loss being above the high threshold; operating the conference bridge in an echo cancellation mode, due to the second echo return loss being below the low threshold; and operating the conference bridge in an echo suppression mode, due to the second echo return loss being between the low threshold and the high threshold.