Looking For Information On Transmit Over Power

Is there information about devices that can transmit audio and video over power lines. I know a lot of things use the power lines. Also along that line do you know of any device with similar capability that can store and forward over power lines?

Login to read this IPVM discussion.
Why do I need to log in?
IPVM conducts unique testing and research funded by member's payments enabling us to offer the most independent, accurate and in-depth information.

***** ***, ***** ** * *** ** **** *********** ** those *** *****. * **** **** ******* **** *** *** back ** *** **** *** *********.