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8520 Telephone User Guide – Issue 13, September 2009 Page iii
Phone Usage
This equipment is not for connection to the telephone network or public coin phone service. It is only for use when
connected to Mitel systems.
WARNING
When using your phone equipment, basic safety precautions should always be followed to reduce the risk of
fire, electric shock and injury to persons, including the following:
• Do not use this product near water, for example, near a bath tub, wash bowl, kitchen sink or laundry
tub, in a wet basement, or near a swimming pool.
• Avoid using a phone (other than a cordless type) during an electrical storm. There may be a remote risk
of electric shock from lightning.
• Do not use the phone to report a gas leak in the vicinity of a leak.
• Do not connect directly to the Public Switched Telephone Network (PSTN). Any connection of this
phone to an off premise application, an out of plant application, any other exposed plant application, or
to any equipment other than the intended application may result in a safety hazard, and/or defective
operation, and/or equipment damage. “Exposed plant” means where any portion of the circuit is subject
to accidental contact with electric lighting or power conductors operating at a voltage exceeding 300
volts between conductors or is subject to lightning strikes.
• The socket outlet, if used, shall be located near the equipment and shall be easily located by the user.
• Use only Mitel approved power adaptors.
• The handset supplied with the phone is not certified for use with any other phone. Use of the handset
with any other phone may have the potential to cause hearing loss in the event of a lighting strike on the
outside plant wiring.