J159 Avaya Phone Manual

The Avaya J159 is a business-grade IP deskphone featuring a high-resolution color display, support for multiple lines, advanced call handling features, integrated Gigabit Ethernet, Power over Ethernet (PoE), and compatibility with Avaya communication platforms. 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. Advanced Call Features 8. Accessibility Features 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Color LCD display, Programmable feature keys, Speakerphone, Handset, Ethernet ports, Headset jack.

Feature	Description
Display	High-resolution color LCD with adjustable contrast
Programmable Keys	Configurable for speed dial, call appearances, features
Speakerphone	Full-duplex for hands-free conversations
Handset	Traditional handset with noise-canceling microphone
Ethernet Ports	Two 10/100/1000 Mbps ports with PoE support
Headset Jack	3.5mm jack for wired headset connection
Volume Controls	Separate controls for handset, speaker, ringer
Message Waiting Indicator	LED for visual message notification
Conference Calling	Support for multi-party conference calls
Hold/Transfer	Standard call handling features

Installation

Unpack and inspect contents. Place on stable surface.

Connect to network: Use Ethernet cable from switch to phone's LAN port.
Connect computer: Use second Ethernet cable from phone's PC port to computer.
Connect handset: Plug coiled handset cord into handset jack.
Power connection: Use PoE from switch or optional power adapter.

WARNING! Use only approved power adapter. Ensure proper ventilation around device.

First-Time Setup

Power on phone; follow on-screen prompts.

Network configuration: Phone will obtain IP address via DHCP by default.
Server registration: Enter server address provided by administrator.
User configuration: Enter extension number and password.
Feature configuration: Program feature keys as needed.

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

Specifications

Display: 3.5-inch color LCD, 320x240 resolution.
Network: Dual 10/100/1000 Mbps Ethernet ports, PoE IEEE 802.3af.
Audio: Wideband audio support, HD voice quality.
Protocols: SIP, H.323, Avaya proprietary protocols.
Power: PoE or 48V DC power adapter.
Memory: Configurable speed dial directory.
Dimensions: 8.5 x 9.5 x 6.5 inches.
Weight: 2.2 lbs (1 kg).
Operating Temp: 32°F to 104°F (0°C to 40°C).

Controls and Settings

Access menu via MENU button. Navigation: 4-way navigation cluster with OK button.

Key Functions: HOLD, TRANSFER, CONFERENCE, MESSAGE, VOLUME, MUTE, HEADSET, SPEAKER.

Display Settings: Contrast, brightness, backlight timeout. Audio Settings: Ringer volume/type, handset volume, speaker volume, headset gain. Network Settings: IP configuration, VLAN settings, QoS. Feature Settings: Speed dial programming, call forwarding, do not disturb.

Connecting Devices

Network: LAN port to switch, PC port to computer. Peripheral: Headset to 3.5mm jack.

Turn off phone before connecting cables.
Use Cat5e or better Ethernet cables.
Ensure PoE switch provides adequate power.
Test all connections after setup.

Tip: Label cables for easy identification during maintenance.

Advanced Call Features

Supports enterprise telephony features.

Call Hold: Press HOLD button; retrieve with line key.
Call Transfer: Press TRANSFER, enter destination, press TRANSFER again.
Conference: Press CONFERENCE, call first party, press CONFERENCE, call second party.
Call Forwarding: Menu > Features > Call Forward > enable and set destination.
Do Not Disturb: Menu > Features > DND > enable with optional exceptions.
Speed Dial: Program keys for one-touch dialing.
Call Logs: Access missed, received, and dialed calls.
Directory: Browse corporate directory or personal contacts.

WARNING! Do not use phone during electrical storms for safety.

Accessibility Features

Visual Alerts: Flashing LED for incoming calls. Audio Alerts: Adjustable ringer volume and patterns. Tactile Features: Raised dots on keypad for navigation.

Care & Cleaning

Unplug before cleaning. Use slightly damp cloth; avoid liquids entering openings.

CAUTION! Do not use abrasive cleaners or solvents on display or casing.

Regulatory Information

FCC Part 15: Class A digital device; complies with limits for business environments. CE marked for European compliance. Copyright © 2025 Avaya Inc.; all rights reserved. For support, visit www.avaya.com/support or contact 1-866-GO-AVAYA.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No display	Power issue	Check PoE/power adapter; ensure cable securely connected.
No network connection	Cable/configuration	Check Ethernet cables; verify switch port active; check IP settings.
No dial tone	Registration issue	Verify server settings; check extension configuration; restart phone.
Poor audio quality	Network/device	Check network QoS settings; test with handset and speakerphone separately.
Feature keys not working	Programming	Re-program feature keys; verify configuration with administrator.

Reset: Menu > Settings > System > Reset to factory defaults.

Service: 1-866-GO-AVAYA; www.avaya.com/support