Yealink T33G Gigabit Business Phone Manual

The Yealink T33G is a Gigabit IP phone designed for business environments, featuring a 3.5-inch color LCD screen, dual Gigabit Ethernet ports, HD voice quality, support for up to 16 SIP accounts, PoE compatibility, built-in Bluetooth, and advanced telephony 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 Features 8. Accessibility Features 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: 3.5-inch color LCD, Ethernet ports, Handset, Base unit, Power adapter, Network cable.

Feature	Description
Display	3.5-inch color LCD with 320 x 240 resolution
Network Ports	Dual Gigabit Ethernet (LAN and PC)
Voice Codecs	G.722, G.729, G.711, iLBC, Opus
Bluetooth	Built-in for headset connectivity
PoE Support	IEEE 802.3af (Power over Ethernet)
SIP Accounts	Up to 16 SIP accounts supported
HD Voice	Wideband audio for crystal-clear calls
Headset Port	3.5mm jack for wired headset
Expansion Module	Support for Yealink EXP40 expansion module
Firmware Updates	HTTP/HTTPS and TFTP support

Installation

Unpack and inspect contents. Place on stable surface.

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

WARNING! Use only approved power adapter. Ensure proper ventilation.

First-Time Setup

Power on phone; follow on-screen prompts.

Network configuration: Obtain IP automatically via DHCP or set manually.
SIP account setup: Enter SIP server, username, password provided by IT/ISP.
Date and time: Set automatically via NTP or manually.
Language: Select preferred language (default ENGLISH).
Test call: Make test call to verify configuration.

CAUTION! Handle phone with care; avoid liquid exposure.

Specifications

Display: 3.5-inch color LCD, 320 x 240 pixels.
Network: Dual 10/100/1000 Mbps Ethernet ports.
Protocols: SIP RFC3261, TCP/IP, UDP, RTP, RTCP, DHCP, DNS.
Audio Features: HD voice, acoustic echo cancellation, noise reduction.
Power: 12V DC or IEEE 802.3af PoE.
Bluetooth: Version 4.2, HSP/HFP/A2DP/AVRCP profiles.
Physical Dimensions: 200mm x 185mm x 70mm.
Operating Temperature: 0°C to 40°C (32°F to 104°F).
Supported Platforms: BroadWorks, Asterisk, 3CX, etc.

Controls and Settings

Access menu via dedicated MENU button. Front Panel: LCD screen, navigation keys, volume keys, mute, headset, speakerphone.

Key Functions: Hold, Transfer, Conference, Redial, Message, Directory, Mute, Volume up/down.

Settings: Network (IP, DNS, VLAN), Audio (ringer, handset, headset volume), Display (contrast, backlight), Time (timezone, NTP), Account (SIP settings, registration). Advanced: Call features (call waiting, forward, DND), Security (admin password, TLS/SRTP).

Connecting Devices

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

Turn off phone before connecting cables.
Match Ethernet cables to correct ports.
For PoE, ensure switch supports 802.3af.
Pair Bluetooth headset via phone menu.

Tip: Use quality CAT5e or CAT6 cables for Gigabit speeds.

Advanced Features

Supports call transfer, conference, forward, hold, DND.

Transfer call: Press TRANSFER, enter number, press TRANSFER again.
Conference: During call, press CONFERENCE, dial second party, press CONFERENCE to merge.
Call forward: Menu > Features > Call Forward > enable and set number.
Bluetooth: Menu > Bluetooth > search and pair device.
Directory: Store up to 1000 contacts locally.
Call history: View missed, received, placed calls.
Expansion module: Connect EXP40 for additional line keys.

WARNING! Do not disassemble phone; void warranty if opened.

Accessibility Features

Visual: Adjustable screen contrast, backlight timeout. Audio: Adjustable ringer volume, distinct ring tones. Physical: Large buttons, tactile feedback. Hearing aid compatible.

Care & Cleaning

Unplug before cleaning. Use dry, soft cloth; avoid liquids or abrasive cleaners.

CAUTION! Do not use alcohol or solvents; keep away from extreme temperatures.

Regulatory Information

FCC Part 15: Class B digital device; complies with interference limits for business use. CE, RCM, UKCA marked. Copyright © Yealink Inc. For support, visit www.yealink.com or contact authorized distributor.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power	Power adapter/PoE	Check power connection; try different outlet; ensure PoE switch is on.
No network	Cable/DHCP	Check Ethernet cable; restart phone; verify DHCP server.
No registration	SIP settings	Verify SIP server, username, password; check network firewall.
No audio	Volume/mute	Adjust volume; check mute status; test with headset.
Bluetooth not pairing	Distance/compatibility	Ensure headset in pairing mode; move closer; restart both devices.

Reset: Press and hold OK key during boot for factory reset.

Service: Contact IT administrator or Yealink support.