Call Quality Monitoring for VoIP

Document type: Conference Papers
Peer reviewed: Yes
Author(s): Todd Bayley, Bijan Rohani, Anders Johansson, Manora Caldera, Hans-Jürgen Zepernick
Title: Call Quality Monitoring for VoIP
Conference name: IEEE International Conference on Signal Processing and Communication Systems
Year: 2011
ISBN: 978-1-4577-1178-7
Publisher: IEEE
City: Honolulu, USA
Organization: Blekinge Institute of Technology
Department: School of Computing (Sektionen för datavetenskap och kommunikation)
School of Computing S-371 79 Karlskrona
+46 455 38 50 00
Authors e-mail:,,, ,
Language: English
Abstract: A method of monitoring the speech quality of a Voice-over-IP call is described in this paper. This method is attractive because it employs the ITU-T standard P.862 for Perceptual Evaluation of Speech Quality which is well-known for its accuracy. In addition, with the proposed method, call quality is monitored without interfering with the call while it is in progress. The results corresponding to an implementation of this method shows call quality can be measured with excellent accuracy under typical network delays.
Subject: Telecommunications\General
Signal Processing\General
Keywords: Speech Quality, PESQ, VoIP