Yealink Phone Manual T33G

The Yealink T33G is a versatile IP phone designed for small to medium businesses, featuring a 3.5-inch color LCD screen, support for up to 16 SIP accounts, HD voice quality, PoE support, dual Gigabit Ethernet ports, integrated Bluetooth, and compatibility with leading 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: 3.5-inch color LCD, handset with HD voice, Ethernet ports, Bluetooth module, programmable keys.

Feature	Description
Display	3.5-inch color LCD with 320x240 resolution
Network Ports	Dual Gigabit Ethernet (LAN and PC)
Power Options	IEEE 802.3af PoE or AC adapter
Bluetooth	Integrated Bluetooth 4.2 for headset pairing
SIP Accounts	Up to 16 SIP accounts supported
HD Voice	Wideband audio with Opus, G.722 codecs
Programmable Keys	Up to 4 programmable line keys
Headset Port	3.5mm headset jack for hands-free operation
Conference	3-way audio conference capability
Security	SRTP, TLS, 802.1x authentication

Installation

Unpack and inspect contents. Place on stable surface.

Connect to network: Use Ethernet cable to connect LAN port to router/switch.
Power the phone: Use PoE from switch or connect AC adapter to power port.
Connect handset: Plug handset cable into dedicated port.
Optional headset: Connect to 3.5mm headset jack.
Optional PC connection: Use second Ethernet port to connect computer.

WARNING! Use only approved power sources. Ensure proper ventilation around device.

First-Time Setup

Power on phone; follow on-screen prompts.

Network configuration: Phone will attempt DHCP; check IP address on screen.
SIP account setup: Enter SIP server, username, password via web interface or phone menu.
Date and time: Set automatically via NTP or manually in settings.
Audio settings: Adjust handset, speaker, ringer volume.
Test call: Make test call to verify configuration.

CAUTION! Keep firmware updated for security and performance.

Specifications

Display: 3.5-inch color LCD, 320x240 pixels.
Network: Dual 10/100/1000 Mbps Ethernet ports, IEEE 802.3af PoE.
Protocols: SIP RFC3261, TCP/IP, UDP, RTP, RTCP, DNS, DHCP.
Audio Codecs: G.711, G.722, G.729, Opus, iLBC.
Bluetooth: Version 4.2, HSP/HFP/A2DP profiles.
Power Supply: Input 100-240V AC, 50/60Hz; Output 5V DC, 1A.
Operating Temp: 0°C to 40°C (32°F to 104°F).
Dimensions: 200mm x 200mm x 70mm (W x D x H).

Controls and Settings

Access menu via OK button or web interface (http://phone-ip). Front Panel: LCD, navigation keys, volume keys, mute, headset, speakerphone.

Programmable Keys: Configure for speed dial, BLF, call park, etc.

Basic Settings: Network (DHCP/static), SIP accounts, audio (ringer, handset, speaker), time (NTP). Advanced: VPN, QoS, security (SRTP/TLS), call features (call forward, DND, conference).

Connecting Devices

Network: Ethernet cable to LAN port. PC: Second Ethernet port to computer. Headset: Wired to 3.5mm jack or Bluetooth pairing.

Turn off phone before connecting cables.
Match cables to ports (RJ45 to Ethernet, 3.5mm to headset).
For Bluetooth: Enable in menu, put headset in pairing mode, select from phone list.

Tip: Use quality CAT5e or higher cables for Gigabit connections.

Advanced Features

Supports call management and productivity features.

Call Hold/Transfer: Press Hold during call; use Transfer to send to another number.
Conference: During call, press Conf softkey, dial second party, press Conf again.
BLF (Busy Lamp Field): Program keys to monitor extension status.
Call Recording: Configure via PBX or press Record softkey if supported.
Speed Dial: Assign numbers to programmable keys for one-touch dialing.
VPN: Configure IPsec or OpenVPN for secure remote connectivity.
Music on Hold: Upload audio files via web interface.

WARNING! Configure advanced features per PBX requirements.

Accessibility Features

High Contrast Display: Enable in settings for better visibility. Audio Adjustments: Separate volume controls for handset, speaker, ringer. TTY Support: Compatible with teletype devices when configured.

Care & Cleaning

Unplug before cleaning. Use slightly damp cloth for screen; dry cloth for body. Do not use liquids or aerosols.

CAUTION! Avoid moisture ingress; keep away from heat sources.

Regulatory Information

FCC Part 15: Class B digital device; complies with interference limits. CE, RCM, UKCA marked. Contains FCC ID: 2ABAP-T33G. For support, visit www.yealink.com or contact local distributor. Copyright © Yealink Inc. All rights reserved.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power	Power source/cable	Check PoE switch or AC adapter; ensure cable connected.
No network	Cable/DHCP	Check Ethernet cable; verify DHCP enabled or static IP correct.
No dial tone	SIP configuration	Verify SIP account settings; check PBX/server status.
Poor audio quality	Network/codec	Check network latency/jitter; try different codec (G.711).
Bluetooth not pairing	Distance/settings	Ensure headset in pairing mode; phone Bluetooth enabled; within range.

Reset: Press and hold OK for 10 seconds to factory reset (erases all settings).

Service: Contact Yealink support at [email protected] or visit www.yealink.com.