Important Regulatory Information
C 9161-A2-GH30-31
July 1998
Important Safety Instructions
1.Read and follow all warning notices and instructions marked on the product or included in the manual.
2.All installation and service must be performed by qualified service personnel, as opening or removing covers may
expose dangerous voltage points or other risks.
3.This product is intended to be used with a 3-wire grounding type plug – a plug which has a grounding pin. This is
a safety feature. Equipment grounding is vital to ensure safe operation. Do not defeat the purpose of the
grounding type plug by modifying the plug or using an adapter.
Prior to installation, use an outlet tester or a voltmeter to check the ac receptacle for the presence of earth
ground. If the receptacle is not properly grounded, the installation must not continue until a qualified electrician
has corrected the problem.
If a 3-wire grounding type power source is not available, consult a qualified electrician to determine another
method of grounding the equipment.
The rear I/O panel has provision for a permanently connected protective earthing (grounding) conductor. Connect
a 6-14 AWG conductor to this solderless lug connector, identified by the protective earth symbol.
4.Slots and openings in the cabinet are provided for ventilation. To ensure reliable operation of the product and to
protect it from overheating, these slots and openings must not be blocked or covered. Always install the housings
in a vertical, upright position to allow for proper cooling.
5.Do not allow anything to rest on the power cord and do not locate the product where persons will walk on the
power cord.
6.General purpose cables are provided with this product. Special cables, which may be required by the regulatory
inspection authority for the installation site, are the responsibility of the customer. Use a minimum 26 AWG line
cord for network connections.
7.When installed in the final configuration, the product must comply with the applicable Safety Standards and
regulatory requirements of the country in which it is installed. If necessary, consult with the appropriate regulatory
agencies and inspection authorities to ensure compliance.
8.A rare phenomenon can create a voltage potential between the earth grounds of two or more buildings. If
products installed in separate buildings are interconnected, the voltage potential may cause a hazardous
condition. Consult a qualified electrical consultant to determine whether or not this phenomenon exists and, if
necessary, implement corrective action prior to interconnecting the products.
9.Filler panels are provided with the housings to cover unused slots. You

must

install filler panels on the unused
slots to avoid possible injury from electrical shock and to maintain compliance with FCC rules.
10.In addition, if the equipment is to be used with telecommunications circuits, take the following precautions:
—Never install telephone wiring during a lightning storm.
—Never install telephone jacks in wet locations unless the jack is specifically designed for wet locations.
—Never touch uninsulated telephone wires or terminals unless the telephone line has been disconnected at the
network interface.
—Use caution when installing or modifying telephone lines.
—Avoid using a telephone (other than a cordless type) during an electrical storm. There may be a remote risk of
electric shock from lightning.
—Do not use the telephone to report a gas leak in the vicinity of the leak.