Yealink Phone Manual T46U

The Yealink T46U is a high-end SIP phone designed for business environments, featuring a 4.3-inch color LCD with capacitive touch, 12 line keys with dual-color LEDs, support for up to 16 SIP accounts, integrated dual Gigabit Ethernet ports, PoE support, HD audio with wideband codecs, built-in Bluetooth and Wi-Fi (optional), USB port for expansion, and advanced call handling features. 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: 4.3-inch color touchscreen, Handset, Base unit, Ethernet ports, Power adapter, Handset cord, Network cable, Quick start guide.

Feature	Description
Display	4.3-inch TFT color LCD with capacitive touch (480 x 272 pixels)
Line Keys	12 programmable dual-color LED line keys
Networking	Dual Gigabit Ethernet ports (LAN and PC), PoE (802.3af)
Audio	HD handset and speakerphone, Opus, G.722, G.711, iLBC
Wireless	Built-in Bluetooth 4.2, optional Wi-Fi module (802.11a/b/g/n)
Expansion	USB 2.0 port for wireless headset dongle or Bluetooth adapter
Headset Port	3.5mm headset jack for wired headsets
Conference	5-way audio conference
Firmware	Upgradable via web interface or TFTP
Power	PoE or 12V DC power adapter

Installation

Unpack and inspect contents. Place on stable surface.

Connect to network: Use Ethernet cable to connect LAN port to switch/router. Use second port to daisy-chain a computer.
Connect handset: Plug handset cord into handset port on phone base.
Power the phone: Use PoE from switch or connect the 12V DC power adapter.
Connect optional headset: Plug into 3.5mm headset jack.

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

First-Time Setup

Power on phone; follow on-screen prompts.

Network configuration: Phone will attempt DHCP. Check IP address on screen or via "Settings > Status".
Provisioning: Enter SIP server details manually via web interface (http://phone-ip) or auto-provision via configured server.
Account registration: Add SIP accounts in "Settings > Account". Enter server, username, password.
Basic settings: Set time zone, language, ringtone, and screen saver.

CAUTION! Secure admin password. Keep firmware updated.

Specifications

Display: 4.3-inch color TFT LCD, capacitive touch.
Protocols: SIP (RFC 3261), TLS, SRTP.
Voice Codecs: Opus, G.722, G.711A/u, G.726, G.729AB, iLBC, iSAC.
Network Interfaces: Dual 10/100/1000 Mbps Ethernet, integrated switch.
Power: IEEE 802.3af PoE or 12V DC, 0.5A.
Bluetooth: Version 4.2, profiles: HFP, A2DP, AVRCP.
Physical: 240mm x 195mm x 65mm, 1.1 kg.
Operating Environment: 0°C to 40°C, 10% to 90% humidity.

Controls and Settings

Access menu via touchscreen or physical keys. Front: Touchscreen, MUTE, HEADSET, SPEAKERPHONE, NAVIGATION pad, VOLUME keys.

Touchscreen: Home screen with line status, call history, contacts, features. Physical: Hold, Transfer, Conference, Redial, Message, Directory.

Settings via UI: Phone (ringtone, volume), Account (SIP registration), Features (call forward, DND), Network (IP, VLAN), Security (password, encryption). Web Interface: Advanced configuration (http://phone-ip), admin password required.

Connecting Devices

Network: LAN port to switch, PC port to computer. Headset: Wired to 3.5mm jack or wireless via Bluetooth/USB dongle.

Turn off phone before connecting wired accessories.
Pair Bluetooth headset: Settings > Bluetooth > Search, select device.
Connect Wi-Fi module (optional): Insert module, configure SSID and password.

Tip: Use quality Ethernet cables for Gigabit performance.

Advanced Call Features

Supports call hold, transfer, conference, forward, DND, call recording.

Make call: Dial number on screen or from directory, press handset or Speakerphone.
Hold: Press Hold button during call.
Transfer: Press Transfer, dial target, press Transfer again (blind) or wait for answer (attended).
Conference: During call, press Conference, dial second party, press Conference again to merge.
Call forward: Set via Features menu (always, busy, no answer).
Recording: Press Record during call (if enabled by server).
Directory: Access local and LDAP contacts.
History: View missed, received, placed calls.

WARNING! Ensure compliance with local call recording laws.

Accessibility Features

Visual: Adjust screen contrast, font size. Audio: Adjustable ring and handset volume, hearing aid compatible (HAC) handset. Physical: Large tactile keys on navigation pad.

Care & Cleaning

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

CAUTION! Avoid liquid contact with ports. Keep away from extreme temperatures.

Regulatory Information

FCC Part 15: Class B digital device; complies with limits for residential use. CE, RCM, UKCA marked. Contains FCC ID: 2ADUI-T46U. For support, visit www.yealink.com or contact your reseller. Copyright © Yealink Inc. All rights reserved.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power	Power source/cable	Check PoE switch or power adapter; ensure cable is secure.
No network	Ethernet/DHCP	Check cable; verify DHCP server; restart phone.
No registration	Account settings	Verify SIP server, username, password; check network firewall.
No audio	Handset/network	Check handset cord; verify codec negotiation with server.
Touchscreen unresponsive	Calibration	Restart phone; recalibrate via Settings > Screen.

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

Service: Contact supplier or Yealink support at www.yealink.com.