Yealink T46U Phone Manual

The Yealink T46U is a high-performance SIP desktop IP phone designed for business environments. It features a 4.3-inch color LCD with capacitive touchscreen, HD audio, dual Gigabit Ethernet ports, integrated Bluetooth and Wi-Fi (optional), support for up to 16 SIP accounts, and compatibility with major IP-PBX 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 Features 8. Accessibility Features 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: 4.3-inch color touchscreen, Handset, Ethernet ports, Headset jack, USB port, Expansion module port.

Feature	Description
Display	4.3-inch TFT color LCD with capacitive touch (480 x 272 pixels)
Network Ports	Dual Gigabit Ethernet (LAN and PC)
Audio	HD handset and speakerphone with Opus codec support
Wireless	Integrated Bluetooth 4.2; optional Wi-Fi module (802.11a/b/g/n/ac)
Expansion	Supports up to two Yealink EXP40 expansion modules
USB Port	For connecting USB headsets or Bluetooth/Wi-Fi dongles
Headset Jack	3.5mm jack for wired headsets
SIP Accounts	Up to 16 SIP accounts
Codecs	G.722, G.729, G.711, Opus, iLBC, etc.
Power	IEEE 802.3af/at PoE or external power adapter (optional)

Installation

Unpack and inspect contents. Place on stable desk surface.

Connect Network: Use Ethernet cable to connect LAN port to switch/router. Use PC port to connect computer.
Power the Phone: Use Power over Ethernet (PoE) or connect the optional external power adapter.
Connect Handset: Plug handset cord into the dedicated jack.
Optional: Connect headset to 3.5mm jack or USB port.

WARNING! Use only approved power adapter. Ensure network cables are securely connected.

First-Time Setup

Power on phone; follow on-screen prompts.

Network Boot: Phone will attempt to obtain IP address via DHCP.
Check Network Status: Press "OK" key, go to Status > Network to verify IP.
Provisioning: Enter your SIP server address manually or via auto-provisioning (TR-069, TFTP, HTTP/HTTPS).
Register Account: Go to Menu > Accounts, enter SIP credentials (username, password, server).
Test Call: Make a test call to verify audio and registration.

CAUTION! Ensure firmware is up to date for optimal performance and security.

Specifications

Display: 4.3-inch TFT color LCD, capacitive touch.
Network: Dual 10/100/1000 Mbps Ethernet, IEEE 802.3af/at PoE.
Protocols: SIP (RFC 3261), TLS, SRTP, IPv4/IPv6.
Audio Codecs: G.711 (A/µ-law), G.722, G.729, Opus, iLBC, etc.
Wireless: Bluetooth 4.2 (HS/HFP/A2DP). Optional Wi-Fi 802.11 a/b/g/n/ac.
Expansion: Supports Yealink EXP40 modules (up to 2).
Power Supply: PoE (Class 3) or 12V DC, 1.5A external adapter.
Operating Temp: 0°C to 40°C (32°F to 104°F).
Supported Languages: English, French, Spanish, German, and more.

Controls and Settings

Access menu via touchscreen or dedicated keys. Physical Keys: MUTE, HEADSET, SPEAKERPHONE, NAVIGATION, VOLUME, PROGRAMMABLE KEYS.

Touchscreen Interface: Home screen with line keys, call history, contacts, and features.

Basic Settings: Press "OK" > Settings for Phone, Audio, Network, Features. Phone: Time & Date, Language, Screen saver. Audio: Handset volume, speaker volume, ringtone selection. Network: WAN, LAN, Wi-Fi (if equipped), QoS. Features: Call Forward, DND, Call Waiting, BLF. Advanced: Firmware upgrade, Auto-provisioning, Security (Password, TLS/SRTP).

Connecting Devices

Network: LAN port to network; PC port to computer. Peripherals: Headset to 3.5mm jack or USB; EXP40 module to expansion port.

Turn off phone before connecting wired headsets or expansion modules.
For Bluetooth: Enable in Menu > Settings > Bluetooth > Pair Device.
For Wi-Fi (optional module): Insert module, configure in Menu > Settings > Network > Wi-Fi.

Tip: Use shielded cables for best audio quality and to reduce interference.

Advanced Features

Supports advanced business telephony features.

Busy Lamp Field (BLF): Monitor status of colleagues; speed dial.
Call Park/Retrieve: Park call on extension; retrieve from any phone.
Intercom: Direct voice communication between configured extensions.
Music on Hold: Upload custom audio files via web interface.
Conference: Ad-hoc 3-party conference or join meet-me conference.
Call Recording: Start/stop recording via programmable key (server-dependent).
XML Browser: For custom directories and services.
Hot Desking: Log in with personal account on shared phone.

WARNING! Advanced features require proper PBX configuration. Consult your system administrator.

Accessibility Features

High-Contrast Display: Adjustable in Settings > Phone > Screen. Audio: Adjustable handset and ringer volume, tone settings for hearing aids. Physical Keys: Tactile feedback for navigation and volume keys.

Care & Cleaning

Unplug power and network before cleaning. Use a soft, dry cloth for screen and body. For stubborn marks, lightly dampen cloth with water. Do not use solvents or abrasive cleaners.

CAUTION! Never spray liquids directly onto the phone. Keep away from excessive heat, humidity, and dust.

Regulatory Information

FCC Part 15: Class B digital device; complies with interference limits for residential use. CE, RCM, UKCA marked. This product contains lithium battery for memory backup; dispose of according to local regulations. Copyright © Yealink Inc. For support, visit www.yealink.com or contact your authorized reseller.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power/No display	Power source	Check PoE switch or power adapter connection; try different cable.
No network registration	Network/SIP settings	Verify IP address; check SIP credentials and server address; firewall settings.
One-way/no audio	Network/Codec	Check QoS settings; verify codec negotiation with server; check cable.
Touchscreen not responsive	Screen protector/Calibration	Remove aftermarket screen protector; reboot phone; perform factory reset.
Cannot hear ringtone	Volume settings	Increase ringer volume in Settings > Audio; check DND status.
Bluetooth not pairing	Distance/Interference	Ensure device is in pairing mode and within 1 meter; reduce interference.

Reset: Press "OK" > Settings > Advanced > Factory Reset (or use physical reset button with paperclip).

Service: www.yealink.com/support; contact your system administrator or reseller.