I'm a user of Shaw Cable and I don't pay for this "QoS" enhancement and my VOIP is fine. There's a lot of discussion on this feature in the DSL/Broadband Reports group for Shaw discussing the pro's and con's, and the overall consensus is that this enhancement is not worth that high a price even if it could help somehow. This is relatively old news (a couple years old).
Shaw is one of the leading throttlers of bit torrent in the world though, and we're one of the reasons they invented encryption for Azureus and BitComet.
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