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RINGER EQUIVALENCE NUMBER
NOTICE:
The Ringer Equivalence Number (REN) assigned to each terminal device provides an
indication of the maximum number of terminals 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 ringer equivalence numbers of all devices does not exceed 5.
CAUTION:
Users should not attempt to make such connections themselves, but should contact the
appropriate electric inspection authority, or electrician, as appropriate.
TC972 english.qxd 4/13/2004 10:58 AM Page 19