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 Business
Quality Voice
Independent tests of VOIP systems have shown that they are perfectly
capable of delivering “toll-quality” voice. The actual voice
quality your business will experience, however, is affected by a number
of factors: WAN bandwidth (the higher the better), voice compression and
network conditions such as latency (average “travel” time it
takes for a packet to pass through the network). On a private Intranet
you can control all of these factors to achieve near toll-quality voice
connections. When using the public Internet, you can control everything
but the latency factor. Latency, however, can be managed to enhance your
voice quality with a quality of service guarantee from your ISP.
When network traffic is at peak levels, voice can be given priority over
data to ensure consistently high voice quality using the Differentiated
Services (DiffServ) Quality of Service (QoS) protocol. Other features such
as forward error correction, bad frame interpolation and dynamic jitter
buffers, can further enhance voice quality.
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