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The term
QoS (Quality of Services) refers to a broad collection of networking technologies and techniques. The goal of
QoS is to provide guarantees on the ability of a network to deliver predictable results. Elements of network performance within the scope of
QoS often include availability (uptime), bandwidth (throughput), latency (delay), and error rate.
E-QoStm
on Vebtel’s network refers to the capability of the network to provide better services of voice traffic (quality) over various technologies, including Frame Relay, Asynchronous Transfer Mode (ATM), Ethernet and 802.11 networks, SONET, and IP-routed networks that may use any or all of these underlying technologies.
For Voice over IP to be a practical alternate of the public switched telephone service
E-QoStm
needs to be implemented. Voice quality is determined by several parameters, algorithm, jitter on voice packets and end to end delay.
Vebtel has selected G.723.1 as it provides excellent voice quality at low bit. rate (6.4 kb/s) The G.723.1 standard is optimized for the human voice. Jitter is the variation in the transmission delay of voice packet through the network. Because of the continuous nature of speech, the decoder needs a voice packet every 30ms exactly.
Vebtel can guarantee high-quality voice transmission with the voice packets, for both the signaling and audio channel, being given priority over the other kinds of network traffic. For VoIP to be deployed so that users receive an acceptable level of voice quality, VoIP traffic has been assigned guaranteed compensating bandwidth,
latency, and jitter requirements. E-QoStm
ensures for all the Vebtel
consumers that VoIP voice packets receive the preferential treatment they require.
E-QoStm
provides better (and more predictable) network service by providing the following features:
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