IBM -4900 User Manual
Page 4
Equipment Notes:
Your IBM-4900 telephone is registered with the Federal Communications Commission and is in compliance with Part
and Part 68 of the FCC Rules and Regulations. On the bottom of this equipment is a label indicating among other infor-
mation, the FCC Registration Number and Ringer Equivalence Number (REN) for the equipment. You must, upon re-
quest, provide this information to your telephone company. The REN is useful to determine the number of devices you
may connect to your telephone line and still have all devices ring when your telephone number is called. In most cases
(but not all areas), the sum of the
of all the devices connected to one line should not exceed (5) five. The
4900 telephone utilizes high sensitivity ringer circuits which will function reliably with up to twelve telephones installed.
The IBM-4900 telephone cannot be used with coin service pay service telephones.
The IBM-4900 telephone cannot be connected to a party line service.
The IBM-4900 telephone is Hearing Aid Compatible.
If you experience trouble with this telephone equipment, disconnect it from the telephone network until the problem has
been corrected. The telephone company may discontinue service if the telephone is determined to cause harm to the
telephone network. In this case, the telephone company will:
If possible, notify the customer in advance that the service is being discontinued.
Provide the customer with the opportunity to correct the situation.
Inform the customer of their right to
a complaint with the FCC.
Your local telephone company may make changes in its facilities, equipment, operations or procedures that could affect
the proper functioning of your equipment. If they do, you will be notified in advance to give you an opportunity to main-
tain uninterrupted telephone service.
Interference Information
This equipment generates, uses and can radiate low level radio frequency energy. It has been tested and found to comply
with the limits for a Class B digital device in accordance with the specifications in Part
of the FCC Rules, which are
designed to provide reasonable protection against such interference in a residential installation. If this equipment does
cause interference to radio or television reception, which can be determined by unplugging it from the telephone line. If
the interference is caused by the IBM-4900, the user is encouraged to try to correct the interference by one or more of
the following measures:
Reorient the radio or
receiving antenna.
Relocate this device with respect to the receiver.
Move this device away from the receiver.
If necessary, the user should consult the dealer or an experienced radio/television technician for additional suggestions.
The user may find the following booklet, prepared by the Federal Communications Commission, helpful. This booklet is
available from the U.S. Government printing Office. There may be a charge for this booklet.
“How to Identify and Resolve Radio-N Interference Problems”
U.S. Government Printing Office
Washington, D.C. 20402
Stock Number. 004-000-00354-4
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