The Qos PipeDream [Was: RE: Two Tiered Internet]
Joe Maimon
jmaimon at ttec.com
Sun Dec 18 22:29:26 UTC 2005
Jay Hennigan wrote:
>
>
> VoIP by design will have high PPS per connection as opposed to data flows.
> At 20 ms sample rates you have 50 pps regardless of the CODEC or algorithm.
> Increasing the time per sample to 40 ms would cut this in half but the
> added
> latency would result in degraded quality. In addition, longer sample times
> would suffer much more degradation if there is packet loss.
My point is that sampling length should take into effect the rtt. A rtt
of 200ms tolerates far shorter sampling slices than does 20ms.
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