Yealink Model SIP-T46U Manual

The Yealink SIP-T46U is a high-end Gigabit color IP phone designed for enterprise environments, featuring a 4.3-inch color TFT LCD with touch screen, 12 programmable line keys, dual Gigabit Ethernet ports, integrated PoE support, HD audio, wideband codec support, built-in Bluetooth and Wi-Fi (optional), and compatibility with major SIP-based IP-PBX and hosted VoIP services. 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 color TFT LCD with capacitive touch
Network Ports	Dual Gigabit Ethernet (LAN/PoE & PC)
Audio	HD handset and speakerphone with acoustic echo cancellation
Wireless	Optional built-in Wi-Fi (802.11a/b/g/n) and Bluetooth
Line Keys	12 programmable line/speed-dial keys with dual-color LEDs
Expansion	Supports up to 2 expansion modules (T4X modules)
Codecs	G.722, G.729, G.711, iLBC, Opus, etc.
Headset Port	3.5mm headset jack (EHS support with adapter)
Power	PoE (802.3af) or external 12V DC power adapter
Firmware	Field upgradable via web interface or TFTP

Installation

Unpack and inspect contents. Place on stable surface.

Connect to Network: Use Ethernet cable to connect LAN/PoE 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 12V power adapter to DC port.
Connect Handset: Plug handset cord into dedicated port.
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 Boot: Phone will attempt to obtain IP via DHCP.
Check IP Address: Press OK or touch screen, go to Status > Network to view IP.
Configure Account: Via web interface (enter IP in browser) or phone menu: Settings > Account > Register with SIP server details.
Verify Registration: Screen shows account status (Registered).
Test Call: Dial extension or number to verify audio.

CAUTION! Handle handset cord carefully to avoid damage.

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, etc.
Audio Codecs: G.711 (A/µ-law), G.722, G.729, iLBC, Opus, etc.
QoS: Layer 2 QoS (802.1Q/VLAN) and Layer 3 (ToS/DiffServ).
Power Supply: 12V DC, 1.5A or PoE (802.3af).
Operating Temp: 0°C to 40°C (32°F to 104°F).
Dimensions: 235mm x 210mm x 75mm (W x D x H).

Controls and Settings

Access menu via touch screen or navigation keys. Front: 4.3-inch touch screen, 12 programmable keys, 5-way navigation pad, volume keys, mute, headset, speakerphone.

Touch Screen: Tap to navigate menus, dial, view call logs, contacts.

Basic Settings: Via phone menu: Settings > Account, Network, Audio, Display. Advanced: Web interface (enter IP) for detailed configuration (SIP, QoS, Security). Audio: Adjust handset, speaker, ringtone volume. Display: Set brightness, screensaver, language (default English).

Connecting Devices

Network: LAN/PoE port to switch. PC: PC port to computer. Headset: 3.5mm jack. Expansion: T4X module to EXP port.

Power off before connecting expansion modules.
Use Cat5e or better Ethernet cables for Gigabit.
For Wi-Fi/Bluetooth: Enable in Settings > Wireless.

Tip: Use shielded cables in environments with high EMI.

Advanced Features

Supports advanced VoIP features.

Call Handling: Hold, transfer (attended/blind), conference, park.
Call Logs: View missed, received, placed calls.
Contacts: Local phonebook, LDAP, XML phonebook.
BLF: Busy Lamp Field on programmable keys.
Music on Hold: Upload audio files via web interface.
VPN: Supports OpenVPN for secure remote registration.
Hot Desking: Log in/out of accounts via PIN.
Firmware Upgrade: Via web or TFTP; backup config first.

WARNING! Do not interrupt firmware upgrade; may brick device.

Accessibility Features

High-Contrast Display: Adjust in Display settings. Audio: Adjust tone, volume for hearing impaired. Large Font: Option for bigger text. TTY Support: Configurable via web interface.

Care & Cleaning

Unplug power before cleaning. Use slightly damp lint-free cloth for screen; dry cloth for body. Do not use solvents or abrasives.

CAUTION! Avoid moisture entering vents or ports.

Regulatory Information

FCC Part 15: Class B digital device; complies with interference limits for residential use. CE, RCM, UKCA marked. Contains FCC ID: 2ABAP-SIPT46U. For compliance, use only attached power supply. Copyright © Yealink Inc. For support, visit www.yealink.com or contact your service provider.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power	Power source/cable	Check PoE switch or power adapter; ensure cable seated.
No network	Ethernet/DHCP	Check cable; verify DHCP enabled; reboot phone.
Not registering	SIP credentials	Verify username/password/server; check firewall.
No audio	Network/audio settings	Check QoS; verify codec; adjust volume/mute.
Touch screen unresponsive	Calibration	Recalibrate via Settings > Display > Touch Screen.

Reset: Press and hold OK key during boot for factory reset (use pin in reset hole).

Service: Contact service provider or Yealink support.