Yealink T46U IP Phone Manual

The Yealink T46U is a high-performance color-screen IP phone designed for business environments, featuring a 4.3-inch color TFT display, support for up to 16 SIP accounts, HD audio, Gigabit Ethernet, PoE support, integrated Bluetooth, dual-port Gigabit switch, USB port for expansion, and compatibility with leading 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: Color TFT display, Handset, Ethernet ports, USB port, Headset jack, Power adapter port.

Feature	Description
Display	4.3-inch color TFT, 480 x 272 pixels
Network Ports	Dual Gigabit Ethernet (LAN & PC)
Power over Ethernet (PoE)	IEEE 802.3af Class 2 compliant
Bluetooth	Integrated for wireless headset support
USB Port	For Wi-Fi dongle or expansion modules
HD Audio	Wideband audio support (G.722, Opus)
SIP Accounts	Up to 16 lines/accounts
Headset Port	3.5mm jack for wired headset
Programmable Keys	Up to 29 (including line keys and expansion)
Conference	Up to 3-party audio conference

Installation

Unpack and inspect contents. Place on stable surface.

Connect Network: Use Ethernet cable to connect LAN port to network switch/router.
Connect PC (optional): Use second Ethernet cable from PC port to computer.
Power the Phone: Use PoE from switch or connect included power adapter to DC port.
Connect Handset: Plug handset cable into dedicated port.
Connect Headset (optional): Plug into 3.5mm headset jack.

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 > Status to view IP address.
Configure SIP Account: Via web interface (enter phone IP in browser) or on-screen menu.
Set Language: Press Menu > Settings > Basic > Preferences > Language.
Set Time & Date: Configure via NTP or manually in time settings.

CAUTION! Handle phone carefully; avoid placing heavy objects on display.

Specifications

Display: 4.3-inch TFT color, 480 x 272 resolution.
Network: Dual 10/100/1000 Mbps Ethernet, PoE (802.3af).
Protocols: SIP (RFC3261), TCP/IP, HTTP/HTTPS, ARP, DNS, DHCP.
Audio Codecs: G.711, G.722, G.729, Opus, iLBC.
Bluetooth: Version 3.0, profiles: HFP, A2DP.
USB: USB 2.0 host port.
Power Supply: Input: 100-240V AC, 50/60Hz; Output: 12V DC, 0.5A.
Operating Temp: 0°C to 40°C (32°F to 104°F).

Controls and Settings

Access menu via OK button or dedicated Menu key. Front Keys: Hold, Mute, Headset, Volume, Navigation, OK, Soft Keys.

Side Keys: Volume control for handset, headset, and speaker.

Basic Settings: Language, time, ringtone, screen saver. Network: IP settings, VLAN, QoS. Account: SIP server, username, password, display name. Audio: Handset/headset volume, ring volume, codec priority. Features: Call forward, DND, call waiting, auto answer.

Connecting Devices

Network: LAN port to switch. PC: PC port to computer. Headset: 3.5mm jack or Bluetooth. USB: For Wi-Fi dongle (optional).

Turn off phone before connecting additional devices.
Match cables to correct ports.
For Bluetooth headset: Enable Bluetooth in menu > Bluetooth > Search.

Tip: Use shielded Ethernet cables for best performance in noisy environments.

Advanced Features

Supports advanced PBX features and customization.

Call Handling: Hold, transfer, conference, park.
Programmable Keys: Assign to speed dial, BLF, call features.
Call History: View missed, received, placed calls.
Directory: Local and LDAP corporate directory.
Music on Hold: Upload custom audio files via web interface.
XML Browser: For custom applications and service integration.
VPN Support: For secure remote connectivity.
Firmware Upgrade: Via web interface or TFTP.

WARNING! Do not upgrade firmware during active calls. Backup configuration first.

Accessibility Features

High-Contrast Display: Adjust in display settings. Audio: Adjustable volume boost for hearing impaired. Visual Alert: Flashing LED for incoming calls. Large Font: Option for larger on-screen text.

Care & Cleaning

Unplug power before cleaning. Use slightly damp, lint-free cloth. Do not use abrasive cleaners or sprays.

CAUTION! Avoid moisture entering ports or openings. Keep away from direct heat sources.

Regulatory Information

FCC Part 15: Class B digital device; complies with interference limits for residential use. CE, RCM, UKCA marked. For EU, complies with RED 2014/53/EU. Contains FCC ID: 2ADUI-T46U. For support, visit www.yealink.com or contact your authorized reseller.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power	Power source/cable	Check power adapter connection; try different outlet; verify PoE switch is powered.
No network	Cable/DHCP	Check Ethernet cable; restart phone; verify DHCP server is active.
No dial tone	SIP account	Verify SIP account credentials and server address; check network firewall.
Poor audio quality	Network/Codec	Check network latency/jitter; adjust QoS settings; try different audio codec.
Bluetooth not pairing	Distance/device	Ensure headset is in pairing mode; move closer; restart Bluetooth on phone.

Reset: Press and hold OK key during boot for factory reset (or via web interface).

Service: Contact authorized Yealink dealer or visit www.yealink.com/support.