The phrase exists if you ask to Define it in your favorite search engine 'forward phase', gives patented results so someones thought about it...
Here's an abstract of what their Patent did:
A lamp contains a lamp voltage conversion circuit that is entirely within a base for converting a line voltage at a lamp terminal to an RMS load voltage at a light emitting element. The voltage conversion circuit includes a forward clipping circuit with a three-terminal thyristor that forward clips a load voltage to define the RMS load voltage, and a time-based pulse source that provides pulses the trigger conduction of the three-terminal thyristor at constant time intervals that are independent of the magnitude of the line voltage.
From this patent
Here
No, I've never heard of it and to me it sounds like the Crestron guy needs to provide something that does it is, based of what I thought the Abstract said...:roll: