The throttling was application-specific, not provider-specific, and VoIP would be one of the aps prioritized, always. Which IMO is fine. It's not net neutral to the extreme, but it's net neutral "enough" when you have 160 Mbps of capacity serving 250+ users on a cable node.
Also, Cox has had caps for a LONG time. They actually raised them recently. Before, they were quite low, albeit soft.
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