Brother MFC-8660DN - Manual (Page 195)

EQUIPMENT ATTACHMENT LIMITATIONS
(Canada only)
NOTICE
This product meets the applicable Industry Canada technical specifications.
NOTICE
The Ringer Equivalence Number is an indication of the maximum number of devices allowed to
be connected to a telephone interface. The termination on an interface may consist of any
combination of devices subject only to the requirement that the sum of the RENs of all the devices
does not exceed five.