Avaya Phone Manual 6408D

The Avaya 6408D is a digital deskphone designed for use with Avaya communication systems, featuring a 24-character display, 24 programmable line/feature keys, adjustable volume controls, headset and handset support, and multiple call handling features. 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. Call Handling Features 8. Accessibility Features 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Digital telephone set, Handset, Line cords, User guide. Main features include programmable keys, display, volume controls, and headset port.

Feature	Description
Display	24-character backlit LCD for call information and prompts
Programmable Keys	24 keys for line appearances, speed dial, or feature access
Volume Controls	Separate controls for handset, speaker, and ringer volume
Handset/Headset	Standard handset and dedicated headset port (modular jack)
Message Waiting Indicator	LED for visual message notification
Mute	Button to mute microphone during a call
Hold	Button to place calls on hold
Transfer/Conference	Buttons for call transfer and conference features
Redial	Button to redial last number
Flexible Ringing	Selectable ring patterns and volume

Installation

Unpack and inspect contents. Place phone on stable surface near power and network connection.

Connect to network: Plug line cord into wall jack and phone's LINE port.
Connect handset: Attach coiled cord to handset and HANDSET port.
Optional headset: Plug headset into HEADSET port.
Power: Phone receives power from the communication system via line cord.

WARNING! Use only approved cables and power sources. Do not place near heat sources or liquids.

First-Time Setup

Once connected, the phone will initialize. Follow prompts if displayed.

Check extension number: Display should show your extension after system registration.
Set date/time: Configure via system administrator if not automatic.
Program keys: Assign line appearances or speed dial numbers using programming codes.
Adjust volume: Use volume controls to set handset, speaker, and ringer levels.

CAUTION! Do not attempt to open or repair the phone. Contact qualified service personnel.

Specifications

Model: Avaya 6408D Digital Telephone.
Display: 24-character, 2-line backlit LCD.
Keys: 24 programmable line/feature keys, fixed feature keys.
Audio: Full-duplex speakerphone, handset, headset support.
Ports: LINE, HANDSET, HEADSET (modular jack).
Compatibility: Designed for Avaya communication systems (e.g., Avaya IP Office, Definity).
Power: Powered via line from system (48V DC typical).
Operating Temp: 32°F to 104°F (0°C to 40°C).
Dimensions: Standard deskphone size.

Controls and Settings

Access features via keys and display prompts. Front Panel: Handset, Display, Programmable keys, Volume controls, Mute, Hold, Transfer, Conference, Redial, Speakerphone.

Key Functions: Programmable keys can be set for line appearances, speed dial, call park, or feature access. Use ADMIN programming or system codes.

Volume: Adjust handset, speaker, and ringer volume with up/down buttons. Display: Shows caller ID, time, date, feature prompts. Ring Settings: Select pattern via options menu. Date/Time: Set via system if adjustable.

Connecting Devices

Network: LINE port to wall jack. Handset: HANDSET port. Headset: HEADSET port.

Ensure system is powered and active.
Connect LINE cord securely.
Attach handset and optional headset.
Phone should register and display extension.

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

Call Handling Features

Supports standard telephony features via system configuration.

Make call: Lift handset or press Speaker, dial number.
Answer call: Lift handset, press Speaker, or press flashing line key.
Hold: Press HOLD button; resume by pressing held line key.
Transfer: Press TRANSFER, dial target, announce, press TRANSFER again.
Conference: Press CONFERENCE, dial first party, press CONFERENCE again, dial second party.
Redial: Press REDIAL to call last dialed number.
Mute: Press MUTE during call to mute microphone.
Message Waiting: LED indicates voicemail; dial voicemail access number.

WARNING! Do not use phone during electrical storms. Unplug during lightning activity.

Accessibility Features

Volume Adjustment: Separate controls for handset, speaker, ringer. Visual Alerts: Message waiting LED. Hearing Aid Compatible: Handset is HAC rated. Large display for easier reading.

Care & Cleaning

Unplug from network before cleaning. Use soft, dry cloth; avoid liquids and abrasive cleaners.

CAUTION! Do not spray cleaners directly on phone. Keep away from moisture and 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, contact your system administrator or visit www.avaya.com/support.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No display/power	Line connection	Check LINE cord connections at phone and wall; ensure system is powered.
No dial tone	Handset cord/system	Check handset cord; verify system assignment; contact administrator.
Cannot make/receive calls	Programming/system	Confirm extension is active; check with system administrator.
Poor audio quality	Cables/environment	Check handset/headset cords; ensure phone away from interference.
Keys not working	Phone lock/programming	Check for key lock feature; reprogram keys if needed.

Reset: Unplug and reconnect LINE cord to restart phone.

Service: Contact system administrator or Avaya support at www.avaya.com.