Overcoming barriers to high-quality voice over IP deployments.

Quality of Service (QoS) issues are critical to the successful deployment of Voice over Internet Protocol (VoIP) systems. Impairment factors, such as latency, jitter, packet loss, and echo, must be considered, along with the ways in which they interact with each other. The ability of a network to support high-quality VoIP calls and the configuration of various hardware and software parameters are important in ensuring caller satisfaction.