An OPNET-based simulation approach for deploying VoIP
International Journal of Network Management
Voice transmission over IEEE 802.11 networks: main issues and restrictions
WebMedia '06 Proceedings of the 12th Brazilian Symposium on Multimedia and the web
Multi-Class Measurement Based Admission Control for a QoS Framework with Dynamic Resource Management
Journal of Network and Systems Management
Quality assessment of interactive voice applications
Computer Networks: The International Journal of Computer and Telecommunications Networking
VoIP at the crossroads: A critical overview of feasible European regulatory models
Information and Communications Technology Law
Accurate resource estimation for homogeneous VoIP aggregated traffic
Computer Networks: The International Journal of Computer and Telecommunications Networking
On the deployment of VoIP in Ethernet networks: methodology and case study
Computer Communications
EWDC '11 Proceedings of the 13th European Workshop on Dependable Computing
Review: VoIP: State of art for global connectivity-A critical review
Journal of Network and Computer Applications
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Aiming to introduce voice over IP networks and services in ways that satisfy the voice quality expectations of our customers, we have been conducting laboratory studies of how VoIP transmission affects voice quality while also carefully monitoring and managing several field implementations of VoIP. This article summarizes much of what we have learned in this work, and we hope it provides a useful progress report on the industry's evolution to VoIP. We review our data on the voice quality effects of packet loss, delay, speech coders, packet loss concealment algorithms, and the compression option of suppressing transmission during silence. Because the familiar problem of echo has emerged repeatedly in the VoIP environment, we review this issue in some detail. Packet loss and delay variation measurements made on private VoIP networks are reviewed, and the data here are encouraging. We finish by making our case that the network planning tool known as the E-model is currently an inexact predictor of VoIP network performance.