Yealink T46U User Manual

The Yealink T46U is a premium color IP phone designed for business environments, featuring a 4.3-inch color TFT LCD touch screen, 12 programmable line keys, support for up to 16 SIP accounts, HD voice with wideband audio, built-in dual Gigabit Ethernet ports, PoE support, integrated Bluetooth, Wi-Fi capability (with optional module), USB port for call recording or headset, 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: Color touch screen, Handset, Base unit, Ethernet cables, Power adapter, Quick start guide.

Feature	Description
Display	4.3-inch TFT color touch screen with 480x272 resolution
Line Keys	12 programmable line/feature keys with dual-color LEDs
Network Ports	Dual Gigabit Ethernet (LAN and PC) with PoE support (802.3af)
Audio	HD voice with Opus codec, built-in speakerphone, dual headset ports
Wireless	Built-in Bluetooth, optional Wi-Fi module (not included)
USB Port	For call recording, headset connection, or firmware updates
Expansion	Supports Yealink expansion modules (DSS keys)
Protocols	SIP, TLS, SRTP, IPv6, LLDP-MED
Power	PoE (802.3af) or external 12V DC power adapter
Mounting	Wall mountable with included bracket

Installation

Unpack and inspect contents. Place on stable surface or mount on wall.

Connect network: Use Ethernet cable to connect LAN port to network switch/router. Use PC port to connect computer.
Connect handset: Plug handset cord into dedicated port on base unit.
Power the phone: Use PoE from switch or connect external power adapter.
Optional connections: Connect headset to headset port, Bluetooth devices via menu.

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

First-Time Setup

Power on phone; follow on-screen prompts.

Network configuration: Phone will attempt DHCP. Check IP address via Menu > Status.
Provisioning: Enter SIP server details manually or via auto-provisioning (TR-069, TFTP, HTTP).
Account registration: Configure SIP accounts with username, password, server.
Basic settings: Set time zone, language, ring tones, screen brightness.
Test call: Make internal and external test calls to verify audio quality.

CAUTION! Configure security settings (TLS, SRTP) for protected communications.

Specifications

Display: 4.3-inch TFT color touch screen, 480x272 pixels.
Network: Dual 10/100/1000 Mbps Ethernet ports, PoE 802.3af.
Audio Codecs: G.711, G.722, G.729, Opus, iLBC, AMR-WB.
Protocol Support: SIP RFC3261, TLS, SRTP, IPv4/IPv6, LLDP-MED.
Power Supply: 100-240V AC, 50/60Hz; 12V DC, 1.5A.
Operating Environment: 0°C to 40°C, 10% to 90% humidity.
Dimensions: 235mm x 210mm x 75mm (W x H x D).
Weight: 1.2 kg (with handset).
Certifications: FCC, CE, RCM, RoHS, REACH.

Controls and Settings

Access settings via touch screen or physical buttons. Front Panel: Mute, Headset, Speakerphone, Navigation keys, Volume controls.

Touch Screen: Home screen with call status, contacts, call history, features. Menu: Phone settings, Account configuration, Network, Security, Features.

Basic Settings: Language, Time zone, Display brightness, Ring tone selection. Account Settings: SIP server, Username/Password, Display name, Codec priority. Network: Static/DHCP, VLAN, QoS, LLDP. Security: Admin password (default: admin), TLS certificates, SRTP. Features: Call forward, DND, Call waiting, Auto answer, BLF.

Connecting Devices

Network: LAN port to network, PC port to computer. Peripherals: Headset to headset port, USB devices to USB port.

Turn off phone before connecting wired peripherals.
For Bluetooth: Enable in Menu > Bluetooth > Add device.
For Wi-Fi: Insert optional module, configure in Menu > Network > Wi-Fi.
For expansion modules: Connect via dedicated port on back.

Tip: Use shielded cables for Ethernet connections to reduce interference.

Advanced Features

Supports advanced business telephony features.

BLF (Busy Lamp Field): Monitor extension status on programmable keys.
Call Park/Pickup: Park calls and retrieve from other phones.
Conference: 3-party audio conference (up to 5 with server support).
Call Recording: Start/stop recording via USB storage (FAT32 format).
XML Applications: Custom phonebook, weather, directory services.
Hot Desking: Log in with personal account on shared phone.
Music on Hold: Custom audio files via server configuration.
VPN Support: Connect to corporate network via built-in VPN client.

WARNING! Format USB drive as FAT32 for recording compatibility.

Accessibility Features

Visual Alerts: LED indicators for missed calls/voicemail. Audio Adjustments: Separate volume controls for handset, speaker, ringer. Screen: Adjustable brightness/contrast, large font option. Hearing Aid Compatible: HAC rating for handset.

Care & Cleaning

Unplug power before cleaning. Use slightly damp cloth for screen; dry cloth for body. Do not use abrasive cleaners or solvents.

CAUTION! Avoid liquid contact with ports. Keep away from heat sources.

Regulatory Information

FCC Part 15: Class A digital device; complies with limits for business environments. CE: Complies with European EMC and safety directives. Copyright © 2025 Yealink Inc. All rights reserved. For support, visit www.yealink.com or contact your local distributor.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power	Power source/cable	Check PoE switch or power adapter; ensure cable securely connected.
No network	Cable/DHCP	Verify Ethernet cable; check DHCP server; try static IP.
No registration	Account settings	Verify SIP credentials/server; check firewall settings.
No audio	Volume/codec	Adjust volume; check codec compatibility with server.
Touch screen unresponsive	Calibration	Restart phone; recalibrate screen in Menu > Settings.
Bluetooth not pairing	Distance/interference	Ensure device within 10 meters; reduce interference.
Call quality issues	Network QoS	Enable QoS on network; check bandwidth.
USB not recognized	Format/compatibility	Format as FAT32; use Yealink-approved USB drive.

Reset: Press and hold OK key during boot for factory reset.

Firmware Update: Menu > Upgrade > Manual/Auto upgrade.

Service: www.yealink.com/support; contact authorized service center.