Yealink T46S Phone Manual

The Yealink T46S is a high-performance SIP business IP phone featuring a 4.3-inch color LCD with capacitive touch, HD audio, dual Gigabit Ethernet ports, PoE support, integrated Bluetooth, Wi-Fi capability (with optional module), 12 programmable line keys, and support for up to 16 SIP accounts. It offers advanced call handling, conferencing, and integration with popular UC 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 Call Features 8. Accessibility Features 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: 4.3-inch color touch screen, Handset, Base unit, Ethernet ports, Handset/Headset ports, Power connector, Programmable keys.

Feature	Description
Display	4.3-inch TFT color LCD with capacitive touch (480x272 pixels)
Audio	HD handset and speakerphone with Opus, G.722, G.711 codecs
Network	Dual Gigabit Ethernet ports (LAN/PoE, PC), IEEE 802.3af PoE
Wireless	Integrated Bluetooth 4.2; optional Wi-Fi module (802.11a/b/g/n)
Programmable Keys	12 physical line/feature keys (up to 32 virtual via expansion)
Expansion	Supports Yealink EXP40 expansion module (up to 2 modules)
Headset	EHS support for Plantronics/Jabra; dedicated headset port
Conference	Built-in 3-party conferencing
Security	SRTP, TLS, 802.1x, secure boot
Firmware	Field upgradable via web interface or TFTP

Installation

Unpack and inspect contents. Place on stable surface.

Connect Network: Use Ethernet cable from router/switch to LAN/PoE port.
Connect Computer (optional): Use second Ethernet cable from PC port to computer.
Power the phone: Use PoE from switch or connect included power adapter to DC 5V port.
Connect Handset: Plug handset cable into dedicated port.
Connect Headset (optional): Plug into headset port.

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 DHCP; check IP address on screen or via *123#.
Provisioning: Enter SIP server details manually or via auto-provisioning (TR-069, TFTP).
Account Configuration: Navigate to Menu > Accounts to enter SIP username, password, server.
Date & Time: Set via NTP or manually in Menu > Preferences > Time settings.
Test Call: Make internal/external test call to verify audio quality.

CAUTION! Secure admin password. Keep firmware updated.

Specifications

Display: 4.3-inch TFT color LCD, capacitive touch, 480x272 resolution.
Audio Codecs: Opus, G.722, G.711A/U, G.726, G.729, iLBC, BroadSoft BV16/32.
Network Protocols: SIP RFC3261, IPv4/IPv6, HTTP/HTTPS, TFTP, STUN, TR-069.
Physical Ports: 2x Gigabit Ethernet (RJ45), Headset (RJ9), Handset (RJ9), USB 2.0.
Power: IEEE 802.3af PoE or DC 5V/2A external power adapter.
Programmable Keys: 12 physical keys, up to 32 virtual via expansion modules.
Supported Platforms: BroadWorks, Metaswitch, Asterisk, 3CX, Skype for Business.
Operating Temp: 0°C to 40°C (32°F to 104°F).
Languages: Multi-language support including English, Spanish, French, German.

Controls and Settings

Access settings via touch screen or physical buttons. Front Panel: MUTE, HEADSET, NAVIGATION pad, VOLUME, PROGRAMMABLE keys.

Touch Screen: Home screen with call status, contacts, call history. Swipe for features.

Basic Settings: Menu > Preferences for Display, Audio, Time, Language. Network: Menu > Network for TCP/IP, VLAN, QoS. Account: Menu > Accounts for SIP registration. Features: Call forward, DND, call waiting, auto answer. Advanced: BLF, speed dial, XML applications, LDAP directory.

Connecting Devices

Network: LAN/PoE port to switch. PC: PC port to computer. Headset: RJ9 to headset port. Expansion: EXP40 module to side port.

Turn off phone before connecting accessories.
Match cables to correct ports (Ethernet to LAN, handset to handset port).
For Wi-Fi: Insert optional Wi-Fi module, configure via Menu > Network > Wi-Fi.
For Bluetooth: Pair device via Menu > Connectivity > Bluetooth.

Tip: Use Cat5e or better Ethernet cables for Gigabit performance.

Advanced Call Features

Supports multiple call handling features.

Make Call: Dial number and press Send or lift handset.
Answer Call: Press Answer, lift handset, or press headset key.
Hold/Resume: Press Hold button during active call.
Transfer: Press Transfer, dial target, press Transfer again (blind) or wait for answer (attended).
Conference: During call, press Conf, dial second party, press Conf again to merge.
Call Park: Park call via feature code or BLF key; retrieve from another phone.
Forwarding: Set via Menu > Features > Call Forward (Always, Busy, No Answer).
Recording: Press Record during call (if supported by server).

WARNING! Emergency calls may require direct SIP trunk configuration.

Accessibility Features

High Contrast Mode: Enable in Menu > Preferences > Display. Audio Adjustments: Separate volume for handset, headset, speakerphone. Visual Alerts: Flashing LED for missed calls. Large Font: Adjust text size in display settings.

Care & Cleaning

Unplug before cleaning. Use slightly damp lint-free cloth for screen; dry cloth for body.

CAUTION! Do not use abrasive cleaners, solvents, or spray directly on phone.

Regulatory Information

FCC Part 15: Class B digital device; complies with interference limits for residential use. CE, RCM, UKCA marked. ICES-003 compliant. Hearing Aid Compatibility (HAC): M4/T4 rating. For support, visit www.yealink.com or contact your authorized Yealink distributor.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power	Power source/cable	Check PoE switch or power adapter; ensure cable seated firmly.
No network	Ethernet/DHCP	Check cable; verify DHCP server; restart phone.
No registration	SIP credentials/server	Verify username/password/server in account settings; check firewall.
One-way/no audio	NAT/firewall/codec	Enable STUN; check router SIP ALG; ensure codec match.
Touch screen unresponsive	Calibration/software	Recalibrate via Menu > Preferences > Display > Touch Calibration; reboot.
Poor audio quality	Network/device	Check QoS settings; replace handset/headset cable; adjust volume.

Reset: Press and hold OK key during boot for factory reset (use with caution).

Service: Contact your service provider or visit www.yealink.com for firmware and documentation.