Yealink T415 Phone Manual

The Yealink T415 is a business IP phone featuring a 2.8-inch color LCD display, support for up to 4 SIP accounts, HD voice, dual Gigabit Ethernet ports, PoE support, integrated Bluetooth, EHS support for wireless headsets, and a built-in speakerphone. It is designed for small to medium businesses with essential 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: Color LCD display, Handset, Base unit, Ethernet ports, Power adapter port, Headset jack, Bluetooth antenna.

Feature	Description
Display	2.8-inch color LCD with 320x240 resolution
SIP Accounts	Supports up to 4 SIP accounts/phone lines
HD Voice	Wideband audio for superior call clarity
Network Ports	Dual Gigabit Ethernet ports (LAN & PC)
Power over Ethernet (PoE)	IEEE 802.3af compliant
Bluetooth	Integrated for wireless headset connectivity
EHS Support	Electronic Hook Switch for wireless headsets
Speakerphone	Full-duplex hands-free speaker
Headset Port	3.5mm jack for wired headset
Programmable Keys	4 line keys with dual-color LEDs

Installation

Unpack and inspect contents. Place on stable, flat surface.

Connect to Network: Use Ethernet cable to connect LAN port to your router/switch. Use PC port to connect a computer if needed.
Power the Phone: Connect the provided power adapter or use PoE from a compatible switch.
Connect Handset: Plug the handset cord into the dedicated jack on the base.
Optional Headset: Plug a wired headset into the 3.5mm jack or pair a Bluetooth headset.

WARNING! Use only the provided power adapter. Ensure cables are routed to avoid tripping hazards.

First-Time Setup

Power on the phone; follow on-screen prompts or configure via web interface.

Network Boot: The phone will attempt to obtain an IP address via DHCP.
Check Network Status: Press the "OK" button to view the IP address on the screen.
Access Web Interface: Enter the phone's IP address into a web browser on your PC.
Configure SIP Accounts: In the web interface, enter account details provided by your VoIP service provider.
Set Language & Time: Navigate to the settings menu to set language (default: English) and time zone.

CAUTION! Handle the handset cord with care to avoid damaging the connectors.

Specifications

Display: 2.8-inch TFT color LCD, 320x240 pixels.
Protocols: SIP (RFC3261), TCP/IP, UDP, RTP, RTCP, DHCP, DNS.
Audio Codecs: G.711, G.722 (HD), G.729, G.726, iLBC, Opus.
Network: Dual 10/100/1000 Mbps Ethernet ports, IEEE 802.3af PoE.
Wireless: Bluetooth 4.2 (BR/EDR + BLE).
Call Features: Hold, Transfer, Conference, Forward, DND, Call Waiting.
Power Supply: Input: 100-240V AC, 50/60Hz; Output: 5V DC, 1A.
Operating Environment: 0°C to 40°C, 10% to 90% humidity (non-condensing).

Controls and Settings

Access menus via the navigation keys and "OK" button. Front Panel: LCD, Soft keys, Navigation pad, Mute, Headset, Speakerphone, Volume keys.

Key Functions: Hold, Transfer, Conference, Redial, Mute, Speakerphone, Headset toggle, Voicemail.

Basic Settings via Phone UI: Language, Time & Date, Ringtone selection, Volume levels (ringer, handset, speaker). Advanced Settings via Web Interface: SIP account configuration, Network settings (static/DHCP), Audio settings (codec priority), BLF (Busy Lamp Field) configuration for programmable keys.

Connecting Devices

Network: LAN port to router. PC: PC port to computer. Headset: Wired via 3.5mm jack or Bluetooth pairing.

Turn off phone before connecting wired accessories.
For Bluetooth: Enable Bluetooth on headset, press "Menu" > "Bluetooth" > "Search" on phone.
For EHS headset: Connect the EHS adapter cable to the designated port.

Tip: Use Cat5e or higher Ethernet cables for optimal Gigabit performance.

Advanced Call Features

Supports standard business telephony features.

Make a Call: Lift handset or press Speakerphone, dial number, press Dial softkey.
Answer a Call: Lift handset, press Speakerphone, or press Answer softkey.
Hold: Press Hold key during a call.
Transfer: Press Transfer, dial target number, press Transfer again.
Conference: During a call, press Conference, dial second party, press Conference again to merge.
Forward Calls: Configure via web interface or phone menu (Always, Busy, No Answer).
Do Not Disturb (DND): Press DND key or enable via menu.
Voicemail: Press the Voicemail key (if configured) or dial your voicemail access number.

WARNING! Do not use the phone in a wet environment. Keep liquids away from the device.

Accessibility Features

Visual Alerts: LED indicators for line status and messages. Audio Adjustments: Independent volume control for ringer, handset, and speaker. High-Contrast UI: Option for improved screen readability.

Care & Cleaning

Unplug power before cleaning. Use a soft, slightly damp cloth for the exterior. Do not use abrasive cleaners or solvents.

CAUTION! Never spray liquids directly onto the phone. Avoid getting moisture into openings.

Regulatory Information

FCC Part 15: This device complies with part 15 of the FCC Rules. Operation is subject to the condition that this device does not cause harmful interference. ICES-003: Complies with Canadian ICES-003 Class B digital apparatus. CE, RCM: Complies with applicable EU and Australian standards. For support, visit www.yealink.com or contact your authorized Yealink distributor.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power/no display	Power connection	Check power adapter connection; try a different outlet; verify PoE switch is powered.
No network connection	Ethernet cable/DHCP	Reseat Ethernet cables; check router/switch status; verify DHCP is enabled on network.
No dial tone/can't make calls	SIP account	Verify SIP account credentials in web interface; check with your VoIP service provider.
Poor audio quality	Network/Codec	Check network for packet loss/jitter; try a different audio codec (e.g., G.711).
Bluetooth not connecting	Pairing mode/distance	Ensure headset is in pairing mode; keep phone and headset within 3 feet during pairing.

Reset: Press and hold the "OK" button for 10 seconds during boot to factory reset (use with caution).

Service: www.yealink.com/support; Contact your system administrator or reseller.