What is REN

Ringer Equivalence Number (REN) REN measures the load a device places on the line when ringing. A normal BT line will support a REN of at least 4, in other words at least a total of 4 phones/fax/modems should work on any line so long as their REN figures added together don’t exceed 4. The […] read more

On June 5th, 2016, posted in: REN by