Mitel MIVOICE OFFICE 250 User manual

MiVoice Office 250
MITEL 8520 TELEPHONE USER GUIDE
Release 6.2

NOTICE
The information contained in this document is believed to be accurate in all respects but is not warranted
by Mitel Networks™ Corporation (MITEL®). The information is subject to change without notice and should
not be construed in any way as a commitment by Mitel or any of its affiliates or subsidiaries. Mitel and its
affiliates and subsidiaries assume no responsibility for any errors or omissions in this document. Revisions
of this document or new editions of it may be issued to incorporate such changes.
No part of this document can be reproduced or transmitted in any form or by any means - electronic or
mechanical - for any purpose without written permission from Mitel Networks Corporation.
Trademarks
The trademarks, service marks, logos and graphics (collectively "Trademarks") appearing on Mitel's
Internet sites or in its publications are registered and unregistered trademarks of Mitel Networks
Corporation (MNC) or its subsidiaries (collectively "Mitel") or others. Use of the Trademarks is prohibited
without the express consent from Mitel. Please contact our legal department at [email protected] for
additionalinformation.Fora list ofthe worldwide Mitel Networks Corporation registered trademarks, please
refer to the website: http://www.mitel.com/trademarks.
Mitel 8520 Telephone User Guide
Release 6.2
June 2016
®,™ Trademark of Mitel Networks Corporation
© Copyright 2016, Mitel Networks Corporation
All rights reserved

Mitel®8520 Telephone User Guide – Release 6.2, June 2016 Page iii
Notice
This guide is released by Mitel Networks Corporation and provides information necessary to use the
8520 Telephone. The guide contents, which reflect current Mitel standards, are subject to revision or change without
notice.
Some features or applications mentioned may require a future release and are not available in the initial release.
Future product features and applications are subject to availability and cost. Some features or applications may
require additional hardware, software, or system administrator assistance.
For sales, service, or technical support, contact your local authorized provider:
If you do not know the contact information for your local provider, use the “Partners” link at the top of the Mitel home
page (www.mitel.com) to find a location near you.
If you have any questions or comments regarding this user guide or other technical documentation, contact the
Technical Publications Department (USA) at:
tech_pu[email protected]
Mitel®is a registered trademark of Mitel Networks Corporation.
All other trademarks mentioned in this document are the property of their respective owners, including Mitel Networks
Corporation. All rights reserved.
© 2003–6 Mitel Networks Corporation
Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or
promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse
any copyrighted component of this work in other works must be obtained from Mitel.
Enter provider information above.

Page iv Mitel®8520 Telephone User Guide – Release 6.2, June 2016
Important Safety Instructions and Precautions
Remember the following safety guidelines when using the telephone.
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 telephones. For repairs, return the telephone 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 telephone. 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.

Mitel®8520 Telephone User Guide – Release 6.2, June 2016 Page v
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 telephone 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 telephone 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 telephone 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.

Page vi Mitel®8520 Telephone User Guide – Release 6.2, June 2016
Notice to Canadian Customers
The Class B digital apparatus complies with Canadian ICES-003.
Notice to U.S. Customers
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of
the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a
residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed
and used in accordance with the instructions, may cause harmful interference to radio communications. However,
there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful
interference to radio or television reception, which can be determined by turning the equipment off and on, the user is
encouraged to try to correct the interference by one or more of the following measures:
 Reorient or relocate the receiving antenna.
 Increase the separation between the equipment and receiver.
 Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
 Consult the dealer or an experienced radio/TV technician for help.
Notice to European Customers
We, Mitel Networks LTD.
Of, Mitel Castlegate Business Park
Portskewett
Caldicot
NP26 5YR
UK
Declare that for the hereinafter mentioned product the presumption of
conformity with the applicable essential requirements of
DIRECTIVE 1999/5/EC OF THE EUROPEAN
PARLIAMENT (RTTE DIRECTIVE) AND OF THE COUNCIL is given.
Mitel Telephone: 8520
Any unauthorized modification of the product voids this Declaration.
For a copy of the original signed Declaration of Conformity (in full conformance with EN45014), please contact the Regulatory
Approvals Manager at the above address.

Contents
Mitel®8520 Telephone User Guide – Release 6.2, June 2016 Pagevii
Contents
Getting Started 1
Welcome. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
About Your Telephone. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Feature Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Handset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Message Indicator Lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Programmable Buttons. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Dialpad Buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Speaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Feature Buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Phone Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Comfort and Safety Tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Headset Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Personalizing Your Phone 9
Adjusting the Viewing Angle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Changing Volume Levels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Changing the Ring Tone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Adjusting the Display Contrast . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Listening to Background Music . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Changing the Language . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Using the Dialpad Buttons to Enter Characters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Using Programmable Buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Default Access Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Outside Line Access Codes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Extension Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Default Feature Codes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Viewing Button Assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Resetting Programmable Buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Resetting the Telephone to the Default Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Switching Keymaps. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Activating Door Relay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Answering and Placing Calls 19
Answering Calls. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Contents
Page viii Mitel®8520 Telephone User Guide – Release 6.2, June 2016
Answering Waiting Calls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Using Automatic Call Access. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Redirecting Calls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Using Automatic Trunk Answer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Placing Calls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Placing Emergency Calls. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Placing Internal Calls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Requesting a Callback (Queuing the Phone). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Using Camp-on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Using Off-Hook Voice Announce . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Placing External Calls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Redialing a Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Using Speed Dial . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Using System Speed Dial . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Using Station Speed Dial. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Storing Station Speed-Dial Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Dialing Station Speed-Dial Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Deleting Station Speed-Dial Entries. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Assigning Speed-Dial Numbers to Programmable Buttons . . . . . . . . . . . . . . . . . . . . . . . . 26
Using the Directory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Using Account Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Call Features 29
Using Handsfree Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Enhanced Speakerphone Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Using Ring Intercom Always . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Using Mute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Placing Calls On Hold . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Entering a Hookflash. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Transferring Calls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Transferring Calls to Other Extensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Transferring Calls to External Numbers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Using Reverse Transfer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Parking a call and Picking up a Parked call. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Using Group Call Pick-up. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Viewing Your System Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Viewing Caller ID Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Forwarding Calls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Manual Call Forwarding. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
System Forwarding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Contents
Mitel®8520 Telephone User Guide – Release 6.2, June 2016 Pageix
Using Dynamic Extension Express . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Using the Handoff - Push/Pull Feature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Receiving Message Waiting Indications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Placing Ad Hoc Conference Calls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Adding a Conference Party . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Transferring a Conference. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Dropping Out of a Conference. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Ending a Conference and Placing all Parties on Hold . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Using Meet-Me Conferencing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Conference Assistant. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Access Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Setting Up a Meet-Me Conference. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Joining a Meet-Me Conference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Dropping Out of a Meet-Me Conference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Putting a Meet-Me Conference on Hold. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Transferring a Meet-Me Conference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Using Group Listen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Using Call Logging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Using Secondary Extension Buttons. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Using Hot Desking. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Using Configuration Assistant. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Changing Your Station Passcode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Accessing Configuration Assistant. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Changing the Dynamic Extension Express Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Changing the DND Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Changing the Manual Call Forwarding Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Managing Meet-Me Conferencing Access Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Using Remote Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Changing the Dynamic Extension Express Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Changing the DND Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Changing the Manual Call Forwarding Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Changing Your Station Passcode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Messages 53
Using Messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Leaving Messages at Other Extensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Viewing and Responding to Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Canceling Messages Left at Other Extensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Deleting Waiting Inter-Station Messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Using Do-Not-Disturb (DND). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Contents
Page x Mitel®8520 Telephone User Guide – Release 6.2, June 2016
Using Reminder Messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Paging Other System Users . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Placing a Page Announcement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Enabling or Disabling the Page Feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Hunt Groups 59
Logging in to ACD Hunt Groups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Logging out of ACD Hunt Groups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Stopping the ACD Hunt Group Wrap-up Timer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Other Hunt Group Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Requesting Agent Help . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Diverting Hunt Group Calls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Hunt Group Supervisor Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Accepting or Rejecting Agent Help Calls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Monitoring Calls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Stealing Hunt Group Calls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Using Barge-In. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Troubleshooting 65
Contact Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Troubleshooting Tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Index 69

Mitel®8520 Telephone User Guide – Release 6.2, June 2016 Page 1
Getting Started
GettingStarted
Welcome
The instructions in this guide are for using the 8520 Telephone on MiVoice Office 250. The
Quick Reference Guide located at the beginning of this guide is an overview of frequently used
features.
Your telephone should be powered on and ready to use. If the display is blank, or if the display
name, extension number, or time or date are incorrect, contact your system administrator for
assistance.
Because a variety of voice mail products work with MiVoice Office 250, this guide does not
include voice mail instructions. For voice mail instructions, refer to the voice mail user guide for
your system. For example, refer to the Enterprise Messaging, Unified Voice Messaging, and
Embedded Voice Mail Card User Guide, part number 835.3205, or the Mitel NuPoint Unified
Messaging User Guide (on the Mitel Web site (http://edocs.mitel.com). Contact your system
administrator for more information about your voice mail system.
NOTE Because many phone features can be programmed to perform various tasks, some features may work differently than the descriptions in this guide. Contact
your system administrator for more information.

Getting Started
Page 2 Mitel®8520 Telephone User Guide – Release 6.2, June 2016
About Your Telephone
Your telephone is equipped with a two-line display, a hearing aid-compatible handset, a
Message Indicator lamp, an internal speaker and microphone, and two basic types of buttons.
 Dialpad buttons: Allow you to enter numbers and letters.
 Feature buttons: Provide quick access to various phone and voice mail features.
This photo shows the external components of the telephone. See “Feature Descriptions” on
page 3 for more information about the telephone features.
1 – Handset 5 – Programmable buttons
2 – Display 6 – Dialpad buttons
3 – Message Indicator lamp 7 – Feature buttons
4 – Hold button 8 – Speaker
1 1
8
23
4
5
6
7

Mitel®8520 Telephone User Guide – Release 6.2, June 2016 Page 3
Getting Started
Feature Descriptions
The following sections describe default configurations. Your telephone may be programmed
differently. Contact your system administrator for more information. See “About Your Telephone”
on page 2 for phone feature locations.
Handset
The handset provided with this equipment is hearing aid compatible (HAC). If you are using a
headset or if you are in Handsfree Mode, you do not need to use the handset.
Display
The phone has a two-line display. When the telephone is idle, the display shows your extension
number, your username, the time of day, and the date. At other times it might show reminder
messages, Do-Not-Disturb (DND) messages, number dialed, call sources, elapsed time of calls,
current call costs, error messages, and so on.
Following are the feature display abbreviations:
Abbreviation Word or Phrase
ACCT CODE Account Code
CNF Conference
DEST Destination
DIR Directory
DND Do-Not-Disturb
EXT Extension
LOGS Call Logging
MSG Message
RCL Recall
SPKR Speaker
SPKRPHN Speakerphone
STN SPD Station Speed Dial
SYS SPD System Speed Dial
TFR Transfer
TG Trunk Group (a group of outside lines)
TRNK Trunk (an outside line)
MISSED (number) Missed Calls

Getting Started
Page 4 Mitel®8520 Telephone User Guide – Release 6.2, June 2016
Message Indicator Lamp
The Message Indicator lamp flashes or stays lit to indicate call, message, and feature activity.
See “Using Messages” on page 53.
Message Indicator lamp signals are described in the following table.
Programmable Buttons
Most of the buttons on your telephone are preprogrammed by the system administrator;
however, you can program some of the telephone buttons for quick access to features or
speed-dial entries. See “Using Programmable Buttons” on page 13 for instructions.
Dialpad Buttons
Use the dialpad buttons to dial phone numbers, enter feature codes, and to enter characters
when using features that require text input.
Speaker
The speaker provides audio for handsfree calls and background music. See “Using Handsfree
Mode” on page 29 for information about handsfree calls. See “Listening to Background Music”
on page 10 for more information about background music.
NOTE By default, the Message Indicator lamp is lit when you receive new messages. However, this lamp can be programmed for other functions. Contact your system
administrator for more information.
Message Indicator Lamp Signal Description
Rapidly flashing You have an incoming call.
Slowly flashing You have a waiting message or callback message.
On You are on a call or using a feature.
Off Your telephone is idle.

Mitel®8520 Telephone User Guide – Release 6.2, June 2016 Page 5
Getting Started
Feature Buttons
Feature buttons provide quick access to commonly used features. See the following table for
descriptions.
Button Action
(Special) Activates features while on active calls. Depending on how your system
is configured, you may need to press this button before you dial a
feature code.
(Up) (Down) Provides volume control for the ringer, handset, and speaker.
Scrolls through feature options.
(Speaker) Activates Handsfree Mode (speakerphone). See “Using Handsfree
Mode” on page 29.
Activates features.
(Hold) Places the current call on hold.
CALL Selects an outside line or answers a call.
IC Answers an intercom (internal) call.
MUTE Mutes the microphone.
Left/backspace when entering dialpad characters. See “Using the
Dialpad Buttons to Enter Characters” on page 11.
DND Turns DND mode on or off. See “Using Do-Not-Disturb (DND)” on
page 55.
PAGE Selects a page zone to place a page.
STN SPDL Views or accesses Station Speed-Dial numbers.
SYS SPDL Views or accesses System Speed-Dial numbers.
REDIAL Redials last external telephone number.
CNF Places a conference call.
TRANSFER Transfers the current call.
MSG Connects to Inter-station and voice messages.
Toggles between Alpha Mode and Numeric Mode when entering dialpad
characters.
FWD Forwards the call to the specified number.
Right/forward when entering dialpad characters. See “Using the Dialpad
Buttons to Enter Characters” on page 11.
ANSWER Answers calls.
OUTGOING Selects an outgoing line for external calls.

Getting Started
Page 6 Mitel®8520 Telephone User Guide – Release 6.2, June 2016
Phone Signals
The phone has several audio and visual signals to indicate feature activity. The following are a
few helpful tips:
 Any buttons that are lit or blinking indicate call or feature activity.
 All phone button lamps illuminate at the same time for a few seconds when the telephone
is reset or powered on.
 The following actions may cause an error tone:
oPressing an invalid button combination.
oSelecting a restricted feature.
oDialing a restricted or invalid number.
oDialing too slowly between digits.
oWaiting too long before performing the next step.
To correct, hang up and try again.
 Many features “time-out” if you wait too long before performing the next step. If this
happens, you must start over.
 “Off-hook” means the handset is in use. “On-hook” means the handset is idle.
Comfort and Safety Tips
Observe the following comfort and safety tips when using the telephone:
 Do not cradle the handset: Prolonged use of the handset can lead to neck, shoulder, or
back discomfort, especially if you cradle the handset between your neck and shoulder. If
you frequently use the telephone, you might find a headset more comfortable. See
“Headset Instructions” on page 7.
 Adjust the viewing angle:The built-in stand tilts to give you a better view of the buttons.
See “Adjusting the Viewing Angle” on page 9.
 Protect your hearing: Because prolonged exposure to loud sounds can contribute to
hearing loss, keep the volume at a moderate level. You can adjust the volume levels of the
handset receiver or headset. See “Changing Volume Levels” on page 9.

Mitel®8520 Telephone User Guide – Release 6.2, June 2016 Page 7
Getting Started
Headset Instructions
When using a headset, press (Speaker) to connect to or disconnect from calls.
If you have both a headset and a handset connected to your telephone and you are using the
headset, you can quickly transfer audio to the handset by lifting the handset from the cradle.
Press (Speaker) to transfer the call back to the headset before replacing the handset in the
cradle.
To connect and activate the headset:
1. Insert the headset jack into the Headset port located on the back of the telephone. See
“Phone Signals” on page 6.
2. Dial 317 to turn the headset on. HEADSET MODE ON appears.
To turn off Headset Mode and activate the handset and speakerphone:
Dial 317.HEADSET MODE OFF appears. The handset or speakerphone is now
activated.
NOTES
The headset must be hearing aid compatible (HAC).
If your headset has a power-saver mode, make sure the system administrator has
enabled the “Headset Connect Tone” feature. If this is not enabled, you may miss
the first few seconds of an incoming call.

Getting Started
Page 8 Mitel®8520 Telephone User Guide – Release 6.2, June 2016

Mitel®8520 Telephone User Guide – Release 6.2, June 2016 Page 9
Personalizing Your Phone
PersonalizingYourPhone
This chapter describes features you can use to personalize your telephone.
Adjusting the Viewing Angle
You can tilt the telephone stand for a better view of the buttons and display.
To adjust the viewing angle:
1. Position the bottom of the telephone base on a flat surface.
2. Tilt the telephone to the desired angle.
3. Place the “feet” of the support mechanism in the holes on the base to secure the position
of the telephone.
Changing Volume Levels
You can change the following volume levels:
 Ringer (alerting tone)
 Handset
 Headset
 Background music
 External speaker
You must be using the feature to change the volume level. For example, if you want to change
the handset volume level, you must be using the handset. However, you can adjust the ringer
(alerting tone) volume level when the telephone is idle.
To change a volume level:
1. While using the feature, press (Up) to increase the volume, or press (Down) to
decrease the volume.
2. Press the center of the button to save the setting.
Changing the Ring Tone
You can select one of nine different ring tones.
To change the ring tone:
1. With the handset on-hook, dial 398.
2. Do one of the following to listen to (or turn off) ring tones:
 Press 0to turn the ringer off.
 Press (Up) or (Down) or 1to 9to listen to ring tones.
3. Press (Speaker), #or lift and replace the handset to select the ring tone.

Personalizing Your Phone
Page 10 Mitel®8520 Telephone User Guide – Release 6.2, June 2016
Adjusting the Display Contrast
You can adjust the display Contrast setting.
To adjust the Contrast setting:
1. While the handset is on-hook, dial 303.
2. Do one of the following:
 Press (Up) or (Down) to adjust the contrast.
 Press a number on the dialpad (1 = lightest, 8 = darkest) that corresponds to your
desired contrast level.
3. To save the setting, press # or (Speaker).
Listening to Background Music
If your system is equipped with a music source, you can listen to Background Music or system
audio (for example, organizational conference calls) through the external speaker.
To turn background music on or off:
Dial 313 to turn background music on. BACKGROUND MUSIC ON appears. Dial 313 to
turn background music off.
Changing the Language
Your system administrator can select two of the following languages as the primary and
secondary languages to display text:1
 American English
 British English
 Canadian French
 Mexican Spanish
 Japanese
The language choices appearing on your display are controlled by system programming. You
can change the language by selecting the secondary language. Contact your system
administrator for more information.
To change the language:
Dial 301 to select either the primary or secondary language. The display shows text in the
selected language.
1. This feature may or may not be enabled for your system.