Yealink T41S Phone Manual

The Yealink T41S is a feature-rich SIP desktop IP phone designed for business environments. It features a 4.3-inch color LCD screen, support for up to 16 SIP accounts, HD voice, dual Gigabit Ethernet ports with PoE support, integrated Bluetooth, and a wide range of telephony features including call transfer, conferencing, 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 Call Features 8. Accessibility Features 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: 4.3-inch color LCD, Handset, Base Unit, Ethernet Cable, Power Adapter, Quick Start Guide.

Feature	Description
Display	4.3-inch color LCD with 480 x 272 resolution
SIP Accounts	Supports up to 16 SIP accounts
HD Voice	Wideband audio support for superior call quality
Network Ports	Dual Gigabit Ethernet ports (LAN/PoE)
Bluetooth	Integrated Bluetooth for wireless headset connectivity
Headset Port	3.5mm headset jack for wired headsets
Power Options	Power over Ethernet (PoE) or AC adapter
Conference	Supports up to 5-party audio conferencing
Codecs	G.722, G.711, G.729, iLBC, Opus
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 port to switch/router. For PoE, ensure switch provides 802.3af power.
Connect Handset: Plug handset cord into dedicated port on phone base.
Power the Phone: Connect AC adapter to DC port and wall outlet if not using PoE.
Optional Headset: Plug wired headset into 3.5mm jack or pair Bluetooth headset.

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.
SIP Account Setup: Enter SIP server, username, password provided by your service provider via web interface (http://[phone-ip]).
Date & Time: Configure via Menu > Settings > Time Settings (NTP or manual).
Audio Settings: Adjust ringer volume, handset volume, and tone via Menu > Settings > Audio.

CAUTION! Handle handset cord with care to avoid damage to connectors.

Specifications

Display: 4.3-inch TFT color LCD, 480 x 272 pixels.
Network: Dual 10/100/1000 Mbps Ethernet ports, IEEE 802.3af PoE.
Protocols: SIP RFC3261, TCP/IP, UDP, RTP, RTCP, DHCP, DNS, NTP.
Audio Codecs: G.722, G.711 (A/µ-law), G.729AB, iLBC, Opus.
Bluetooth: Version 4.2, HSP/HFP/A2DP/AVRCP profiles.
Power Supply: Input: 100-240V AC, 50/60Hz; Output: 12V DC, 1.5A.
Operating Temp: 0°C to 40°C (32°F to 104°F).
Dimensions: 220mm x 200mm x 65mm (W x D x H).

Controls and Settings

Access Menu via dedicated button or touch screen. Front Panel: LCD, Soft Keys, Navigation Pad, Volume Keys, Mute, Headset, Speakerphone.

Key Functions: Hold, Transfer, Conference, Directory, Call History, Messages, Settings.

Settings Menu: Audio (Volume, Tone), Network (IP, VLAN), Account (SIP parameters), Time (NTP, Timezone), Security (Password, Encryption), Features (Call Forward, DND). Web Interface: Advanced configuration via browser at phone's IP address.

Connecting Devices

Network: Ethernet cable to LAN port. PC: Connect PC to PC port for pass-through. Headset: Wired via 3.5mm jack or Bluetooth.

Turn off phone before connecting additional devices.
Match cables to correct ports (e.g., Ethernet to LAN, handset to handset port).
For Bluetooth, enable pairing mode on headset and select via Menu > Bluetooth.

Tip: Use shielded Ethernet cables in environments with potential interference.

Advanced Call Features

Supports call transfer, conferencing, call park, and more.

Make Call: Lift handset or press Speakerphone, dial number.
Answer Call: Lift handset, press Speakerphone, or press Answer soft key.
Call Transfer: During call, press Transfer, dial target number, press Transfer again.
Conference: During call, press Conference, dial second party, press Conference to merge.
Call Hold: Press Hold button; resume by pressing Resume.
Call Forward: Configure via Menu > Features > Call Forward (Always/Busy/No Answer).
Do Not Disturb: Press DND button or enable via Menu.
Directory: Store contacts via Menu > Directory; dial directly from list.

WARNING! Do not expose phone to liquids; keep away from heat sources.

Accessibility Features

High Contrast Display: Adjust via Menu > Settings > Display. Ringer Volume: Adjust independently for each account. Hearing Aid Compatible: Handset meets HAC standards. Visual Alerts: LED indicators for missed calls/messages.

Care & Cleaning

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

CAUTION! Never spray liquids directly on phone. Avoid extreme temperatures and humidity.

Regulatory Information

FCC Part 15: Class B digital device; complies with interference limits for residential use. CE, RCM, UKCA marked. This device complies with part 68 of FCC rules. Hearing Aid Compatibility: Handset meets FCC HAC rating. For support, visit www.yealink.com or contact your authorized Yealink distributor.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No dial tone	Network/Power	Check Ethernet connection; verify PoE or power adapter is working.
Cannot register to SIP server	Account settings/Network	Verify SIP username, password, server address; check firewall settings.
Poor audio quality	Network congestion/Codec	Enable QoS on network; try different codec (e.g., G.711).
Screen is blank	Power/Backlight	Check power source; adjust backlight timeout via Menu > Display.
Bluetooth not connecting	Pairing mode/Distance	Ensure headset in pairing mode; keep within 10 meters; remove obstacles.

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

Service: Contact Yealink support or authorized service center. Firmware updates available at www.yealink.com.