Comcast Digital Voice
From Wikipedia, the free encyclopedia
Comcast Digital Voice (CDV) is a home telephone product offered 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. On the HFC (Cable) network, calls are placed into individual Unsolicited Grant Service (UGS) flows, based on DOCSIS 1.1 QoS standards.
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 vocally relate your location to the operator.[citation needed]
