Yealink SIP T46U Manual

The Yealink SIP-T46U is a high-end IP phone designed for business environments, featuring a 4.3-inch color TFT LCD with touch screen, support for up to 16 SIP accounts, HD voice, dual Gigabit Ethernet ports, built-in Bluetooth and Wi-Fi (optional), PoE support, and extensive telephony features including call transfer, conference, and advanced call management. 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 Telephony Features 8. Accessibility Features 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: 4.3-inch color TFT touch screen, handset, base stand, Ethernet cables, power adapter, Quick Start Guide.

Feature	Description
Display	4.3-inch color TFT LCD with capacitive touch
Network Ports	Dual Gigabit Ethernet (LAN & PC)
Wireless	Built-in Bluetooth 4.2; optional Wi-Fi module
Power	IEEE 802.3af PoE or external power adapter
Audio	HD handset and speakerphone with Opus codec
SIP Accounts	Up to 16 lines
Expansion Module	Support for up to 3 Yealink EXP40 expansion modules
Headset Port	EHS (Electronic Hook Switch) compatible
Conference	Built-in 3-party conference
Firmware	Upgradable via web interface or TFTP

Installation

Unpack and inspect contents. Place on stable surface.

Connect to Network: Use Ethernet cable to connect LAN port to switch/router. For PoE, ensure switch supports 802.3af.
Connect PC: Use second Ethernet cable from PC port to computer if needed.
Power: Use PoE or connect external power adapter to DC 5V port.
Connect Handset: Plug handset cable into dedicated port.
Optional Headset: Connect to headset port for hands-free operation.

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

First-Time Setup

Power on phone; follow on-screen prompts.

Network Boot: Phone will attempt to obtain IP via DHCP.
Check IP Address: Press OK or navigate to Status > Network to view IP.
Access Web Interface: Enter IP in browser, login with admin/admin.
Configure SIP Accounts: Go to Account > General, enter server, username, password from provider.
Set Language: Press Menu > Settings > Basic > Preferences > Language.
Set Time & Date: Configure via NTP or manually in web interface.

CAUTION! Secure admin password after first login.

Specifications

Display: 4.3-inch TFT, 480 x 272 pixels, capacitive touch.
Network: Dual 10/100/1000 Mbps Ethernet, IEEE 802.3af PoE.
Protocols: SIP RFC3261, TCP/IP, UDP, RTP, RTCP, DHCP, DNS, NTP.
Audio Codecs: G.711, G.722, G.729, Opus, iLBC, AMR-WB.
Telephony Features: Hold, transfer, forward, 3-party conference, call park, DND.
Power Supply: 100-240V AC, 50/60Hz; DC 5V, 2A.
Operating Temp: 0°C to 40°C (32°F to 104°F).
Certifications: FCC, CE, RCM, UL.

Controls and Settings

Access settings via touch screen Menu or web interface.

Front Panel: Touch screen, physical buttons for Home, Volume, Mute, Headset, Speakerphone, Navigation keys.

Web Interface: Account (SIP registration), Features (call forward, DND), Network (IP settings), Security (password, TLS), Maintenance (firmware upgrade, reboot).

Basic Settings: Language, time format, ringtone selection, screen brightness. Advanced: BLF (Busy Lamp Field) configuration, XML push services, LDAP directory integration.

Connecting Devices

Network: LAN port to switch. PC: PC port to computer. Headset: 3.5mm jack. Expansion: EXP40 modules via dedicated port.

Turn off phone before connecting expansion modules.
For Wi-Fi, insert optional module and configure via web interface.
For Bluetooth, pair device via Menu > Settings > Bluetooth.

Tip: Use shielded Ethernet cables for best performance.

Advanced Telephony Features

Supports advanced business telephony functions.

Call Transfer: During call, press Transfer, enter number, press Transfer again.
Conference: During call, press Conference, dial second party, press Conference to merge.
Call Forward: Configure via web or phone menu (always, busy, no answer).
BLF: Monitor status of colleagues' lines; press to call.
Call Recording: Press Record during call (requires server support).
Directory: Access local or LDAP corporate directory.
Park Call: Press Park or enter park code to retrieve from another phone.

WARNING! Some features require PBX/server support.

Accessibility Features

Visual: Adjustable screen contrast, large font option. Audio: Hearing aid compatible (HAC) handset, adjustable ringer volume and tone. Physical: Optional wall mount kit.

Care & Cleaning

Unplug before cleaning. Use slightly damp, lint-free cloth for screen and body. Do not use abrasive cleaners or solvents.

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

Regulatory Information

FCC Part 15: Class B digital device; complies with interference limits for residential use. Copyright © Yealink Network Technology Co., Ltd. For support, visit www.yealink.com or contact your authorized reseller. This product contains software subject to open source licenses.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power	PoE/Power adapter	Check PoE switch; ensure power adapter is connected securely.
No network	Cable/DHCP	Check Ethernet cable; verify DHCP server is active; check VLAN settings.
No registration	SIP credentials	Verify username, password, server address; check firewall/NAT settings.
No audio	Network/Codec	Check QoS settings; ensure compatible codec negotiated with server.
Touch screen unresponsive	Calibration	Reboot phone; recalibrate via Menu > Settings > Basic > Screen Calibration.

Reset: Press and hold OK key during boot for factory reset (erases all settings).

Service: www.yealink.com/support; contact your distributor for warranty service.