Nortel Meridian 1 Succession 1000M Installation And Configuration Manual page 65

Importance of Ringer Equivalence Number
The FCC regulation label includes the Ringer Equivalence Number (REN).
This number represents the electrical load applied to your telephone line after
you plug the PBX into the wall jack. The telephone line for your premises
does not operate correctly if the total ringer load exceeds the capability of the
telephone company's Central Office (CO) equipment. If there are too many
ringers connected to the line, there may not be enough energy to ring your
system. If the ringer load exceeds the system's capabilities, you may also
have problems dialing telephone numbers.
For more information about the total REN permitted for your telephone line,
contact your local telephone company. However, as a guideline, a total REN
of five should allow for normal operation of your equipment.
If your Small System equipment causes harm to the telephone network, the
telephone company may discontinue your service temporarily. The telephone
company may ask you to disconnect the equipment from the network until the
problem has been corrected, or you are sure that the equipment is not
malfunctioning. If it is possible, they will notify you in advance of the
pending disconnection. You will also be advised of your right to file a
complaint with the FCC.
Your telephone company may make changes in its facilities, equipment,
operations or procedures that can affect the correct operation of your
equipment. If the telephone company does make changes, they will give you
advance notice. With advance notice, it is possible for you to make
arrangements to maintain uninterrupted service.
If you experience trouble with your Small System equipment, contact your
authorized distributor or service center in the United States for repair or
warranty information. If you do not know how to contact your distributor, call
1-800-328-8800.
Hearing aid compatibility
All proprietary telephones used with the Small System comply with the
requirements of FCC Part 68 Rule 68.316 for hearing aid compatibility.
Regulatory information
Small System Installation and Configuration
Page 65 of 562