Comcast Digital Voice
From Wikipedia, the free encyclopedia
Comcast Digital Voice (CDV) is a product offered in limited markets by Comcast Corporation. It is similar to VoIP, but differs in that it operates on a dedicated server and assigns priority to the information sent over the CDV network, and also means that the information is not transmitted over the public internet. This prevents calls made over the CDV network from being subject to reduced quality due to network congestion, but does nothing to avoid congestion on the hybrid fibre-coaxial network at the customer end, where it is much more likely to occur.
It utilizes E911, rather than the standard 911 service utilized by other large VoIP carriers. This allows the 911 service to immediately know where you are located, regardless of whether or not you are able to relate your location to the operator vocally.
