Yealink SIP T53W User Manual

The Yealink SIP T53W is a high-performance, color-screen IP phone designed for business environments. It features a 4.3-inch color LCD, support for up to 12 SIP accounts, Gigabit Ethernet, dual-band Wi-Fi, Bluetooth, HD audio, built-in PoE, and compatibility with leading IP-PBX 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 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 TFT LCD with capacitive touch
Network	Dual Gigabit Ethernet ports with PoE support
Wireless	Dual-band Wi-Fi (802.11a/b/g/n/ac) and Bluetooth 4.2
Audio	HD voice, wideband audio, built-in speakerphone
Accounts	Supports up to 12 SIP accounts
Expansion	Optional sidecar for additional line keys
POWER	Turns phone on/off
HOLD	Places active call on hold
HEADSET	Toggles headset mode
MUTE	Mutes microphone during calls

Installation

Unpack and inspect contents. Place on stable surface.

Connect Network: Use included Ethernet cable to connect LAN port to network switch/router.
Power the Phone: Use PoE from switch or connect the included power adapter to the DC 5V port.
Connect Handset: Plug handset cable into the dedicated port on the base unit.
Optional Headset: Connect wired headset to the headset jack or pair Bluetooth headset.

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

First-Time Setup

Power on the phone; follow on-screen prompts.

Network Configuration: Phone will attempt DHCP. For static IP, configure via web interface or keypad.
SIP Account Registration: Enter SIP server, username, password provided by your service provider.
Set Language & Time: In Settings menu, select preferred language and configure NTP server for time sync.
Audio Adjustment: Test and adjust handset, speakerphone, and ringer volume.

CAUTION! Keep the phone away from liquids and extreme temperatures.

Specifications

Display: 4.3-inch TFT color LCD, 480 x 272 pixels.
Network Interfaces: Dual 10/100/1000 Mbps Ethernet ports (PoE IEEE 802.3af).
Wireless: Wi-Fi 802.11a/b/g/n/ac dual-band; Bluetooth 4.2.
Protocols: SIP RFC3261, TCP/IP/UDP, RTP/RTCP, HTTP/HTTPS.
Audio Codecs: G.711, G.722, G.729, Opus, iLBC.
Power Supply: 100-240V AC, 50/60Hz or PoE.
Operating Temp: 0°C to 40°C (32°F to 104°F).
Supported Platforms: BroadSoft, Asterisk, 3CX, Metaswitch, and more.

Controls and Settings

Access settings via touch screen or physical keys. Front Panel: POWER, HOLD, HEADSET, MUTE, Volume rocker, Navigation keys.

Touch Screen: Home screen with line keys, call history, contacts, settings. Physical Keys: Programmable line/feature keys (up to 27 with expansion).

Phone Settings: Network (Wi-Fi/Ethernet), Audio (volume, codec), Account (SIP parameters), Time & Date. Web Interface: Advanced configuration via browser (default IP from phone info screen).

Connecting Devices

Network: Ethernet cable to LAN port. Optional: PC to PC port for pass-through. Headset: Wired to headset jack or Bluetooth pairing.

Turn off phone before connecting additional devices.
For Wi-Fi: Go to Settings > Network > Wi-Fi, select network, enter password.
For Bluetooth: Go to Settings > Bluetooth, enable, search and pair device.

Tip: Use quality CAT5e or higher Ethernet cables for optimal Gigabit performance.

Advanced Features

Supports advanced business telephony features.

Call Handling: Hold, transfer (blind/attended), conference (3-party), forward.
Voicemail: Visual voicemail indicator; access via message key or dialing.
Contacts: Sync with LDAP, import via web interface, store up to 2000 entries.
Call History: View missed, received, placed calls with timestamps.
XML Browser: For custom directories and services.
Security: TLS/SRTP for encrypted calls, admin/user password protection.
Firmware Upgrade: Via web interface or auto-provisioning server.

WARNING! Do not attempt firmware upgrade during active calls. Backup configuration first.

Accessibility Features

High-Contrast Display: Adjustable in settings. Audio: Hearing aid compatible (HAC) handset, adjustable ringer volume and tone. Visual Alerts: LED indicators for line status and 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! Avoid getting moisture into openings. Never spray liquids directly on the phone.

Regulatory Information

FCC Part 15: Class B digital device; complies with interference limits for residential use. ICES-003: Compliant. CE, RCM marked. For full compliance details, see product label. Copyright © Yealink Inc. For support, visit www.yealink.com or contact your authorized reseller.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power	Power source/connection	Check power adapter connection; try different outlet; verify PoE switch is enabled.
No network	Cable/DHCP	Check Ethernet cable; restart phone and router; verify DHCP server is reachable.
Cannot register	SIP credentials/network	Verify username, password, server address; check firewall settings.
No audio on calls	Network/audio settings	Check network jitter/latency; verify audio codec matches provider; adjust volume.
Screen unresponsive	Software	Restart phone; perform factory reset via web interface if needed.

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

Service: Contact your service provider or visit www.yealink.com/support.