Embedded Real-Time WDiCB Quality Analysis System

Abstract

Voice quality is essential in any communication systems when speech is transmitted from one end to another passing through several impairments. New installation of voice over Internet protocol (VoIP) systems has been increasingly popular in the past few years and will continue to spread both in the carrier and enterprise sectors. In addition to impairments introduced in the public switched telephone network (PSTN), VoIP systems include additional degrading factors such as latency, delay jitter, and packet loss. In order to provide good quality of service (QoS), a QoS monitoring module is sought. This mandates the exis-tence of an embedded subsystem that assesses the voice quality in each live call. This is the main concern of this paper. The existing assessment techniques either lack being nonintrusive for application in live calls or lack the assess-ment accuracy by either probing on the packet network sta-tistics only or relying on the received voice samples. The idea presented in this paper overcomes those shortcomings