Quick Reference Guide

APPENDIX A: Safety, Regulatory, and Legal
68
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 the devices
does not exceed 5.
Japan
Japanese Modem Notice