Avaya Phone 6408D+ Manual

The Avaya 6408D+ is a digital deskphone designed for use with Avaya communication systems. It features a 2-line by 24-character backlit display, 24 programmable buttons, speakerphone, headset support, and support for multiple call appearances. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

1. Features at a Glance 2. Installation 3. First-Time Setup 4. Specifications 5. Controls and Settings 6. Connecting Devices 7. Using Phone Features 8. Accessibility Features 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Handset, Base Unit, Display, Programmable buttons, Volume controls, Speakerphone, Headset jack.

Feature	Description
Display	2-line by 24-character backlit LCD
Programmable Buttons	24 buttons for line/feature access
Speakerphone	Full-duplex for hands-free conversation
Headset Jack	For connecting a headset (2.5mm)
Volume Controls	Separate controls for handset, speaker, ringer
Message Waiting Indicator	LED for voicemail notification
Mute Button	Mutes microphone during a call
Hold Button	Places active call on hold
Transfer Button	Transfers calls to another extension
Conference Button	Sets up multi-party conference calls

Installation

Unpack and inspect contents. Place on stable surface.

Connect to network: Plug the line cord into the wall jack and the phone's LINE port.
Connect handset: Attach coiled handset cord to handset and HANDSET port.
Connect power: Plug the power adapter into the phone and a power outlet (if required).
Connect headset: Plug headset into the 2.5mm headset jack (optional).

WARNING! Use only approved power adapter. Ensure all connections are secure.

First-Time Setup

Power on phone; follow system prompts.

Check registration: Display should show extension number and system name.
Set date and time: Configure via system administrator or phone menu.
Program buttons: Assign features (speed dial, call pickup) to programmable buttons.
Adjust volume: Use volume controls to set handset, speaker, and ringer levels.

CAUTION! Do not place phone near heat sources or in direct sunlight.

Specifications

Display: 2-line x 24-character backlit LCD.
Buttons: 24 programmable feature buttons.
Audio: Full-duplex speakerphone, wideband audio support.
Connections: LINE port, HANDSET port, headset jack (2.5mm), power port.
Supported Features: Call hold, transfer, conference, speed dial, call forwarding.
Power Source: Via line power or external power adapter (model dependent).
Operating Temp: 32°F to 104°F (0°C to 40°C).
Compliance: FCC Part 68, UL/CSA.

Controls and Settings

Access features via soft keys under display or programmable buttons.

Front Panel: MUTE, HOLD, TRANSFER, CONFERENCE, VOLUME UP/DOWN, NAVIGATION ARROWS, SPEAKERPHONE.

Display Menu: Use NAVIGATION arrows to access settings (ringer type, contrast, language). Programmable Buttons: Assign via system administration or phone menu. Volume: Separate controls for handset, speaker, ringer. Audio Settings: Adjust speaker and microphone gain via system.

Connecting Devices

Network: LINE port to wall jack. Handset: Coiled cord to HANDSET port. Headset: 2.5mm plug to headset jack.

Turn off power before connecting devices.
Match cables to correct ports.
Ensure headset is compatible (2.5mm).

Tip: Use only Avaya-approved headsets for optimal performance.

Using Phone Features

Supports basic and advanced telephony features.

Make a call: Lift handset or press SPEAKERPHONE, dial number.
Answer a call: Lift handset, press SPEAKERPHONE, or press flashing line button.
Hold: Press HOLD button; resume by pressing same line button.
Transfer: Press TRANSFER, dial target number, announce call, press TRANSFER again.
Conference: Press CONFERENCE, dial first party, press CONFERENCE again, dial second party.
Speed Dial: Press programmed speed dial button or dial code.
Call Forwarding: Activate via feature code or system menu.
Voicemail: Press MESSAGE button or dial voicemail access number.

WARNING! Do not use damaged handset cords. Keep liquids away from phone.

Accessibility Features

Ringer Volume Adjustment: Use volume control to set loudness. Display Contrast: Adjust via phone menu for better visibility. Headset Mode: For hands-free operation.

Care & Cleaning

Unplug before cleaning. Use slightly damp cloth; do not use abrasive cleaners or solvents.

CAUTION! Do not spray liquids directly on phone. Avoid extreme temperatures.

Regulatory Information

FCC Part 68: Registered for connection to telephone network. Complies with applicable standards. Copyright © Avaya Inc. All rights reserved. For support, visit www.avaya.com/support or contact your system administrator.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No dial tone	Line cord disconnected	Check line cord connections at phone and wall jack.
Display blank	No power	Ensure power adapter is connected (if used); check outlet.
Can't hear caller	Volume low or mute on	Adjust handset/speaker volume; check MUTE button.
Buttons not working	Phone not configured	Contact system administrator to program buttons.
Static on line	Line interference	Check line cord for damage; try different wall jack.

Reset: Unplug power and line cord for 30 seconds, then reconnect.

Service: Contact system administrator or Avaya support.