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8520 Telephone User Guide – Issue 13, September 2009
Important Safety Instructions and Precautions
Remember the following safety guidelines when using the phone.
Programming Emergency Numbers
Make sure to do the following when programming emergency numbers and/or making test calls to emergency
numbers:
• Remain on the line and briefly explain to the dispatcher the reason for the call.
• Perform tests during off-peak hours such as early morning or late evenings.
Safety Notices
The following notices may appear on the product or in the technical documentation.
Maintenance and Repair
There are no user serviceable parts inside the phones. For repairs, return the phone to an authorized Mitel provider.
Product Disposal Instructions
This symbol indicates that the product is classified as electrical or electronic equipment and should not be disposed of with
other commercial or household waste at the end of its working life. For appropriate disposal and recycling instructions,
contact your local Mitel provider.
The Waste of Electrical and Electronic Equipment (WEEE) Directive (2002/96/EC) was established by the European Union to
minimize negative impact on the environment, control hazardous substances, and curtail landfill expansion by using the best
available recovery and recycling techniques.
Depending upon which software version your telephone system is using, some of the features included in this guide
may not be available for your phone. Check with your system administrator to see which software version your
telephone system currently uses and if there are any feature restrictions for your system.
Notice Description
Caution indicates a potentially hazardous situation which, if not avoided, may result in minor
or moderate injury and/or damage to the equipment or property.
Warning indicates a potentially hazardous situation which, if not avoided, could result in
death or serious injury.
Danger indicates an imminently hazardous situation which, if not avoided, will result in death
or serious injury.
The exclamation point within an equilateral triangle indicates that important operating and
maintenance (servicing) instructions are included in the literature accompanying the
product.
NOTE
Changes or modifications not expressly approved by Mitel may void the user’s right to operate the
equipment.