The Yealink T3 series are business IP desk phones designed for small to mid-sized work environments. It features HD voice quality, programmable line keys, and support for wired and wireless headsets.
Supported Models & Firmware
The following Yealink models are supported. Ensure devices are running the required firmware version where applicable:
- T30 / T30P – Requires firmware 124.85.0.10 or later.
- T31 / T31P / T31G
- T33P / T33G – Button overview included in this article.
Key Features
- 2.4" Colour Display — 320 × 240 pixel LCD screen for clear navigation and call visibility.
- 4 Line Keys — Manage multiple calls or accounts directly from the device.
- 12 Memory Keys — Programmable keys (4 pages of 3) for contacts or features.
- HD Audio — Wideband voice quality with Smart Noise Filtering Technology.
- 5-Way Conferencing — Supports multi-party calls directly from the device.
- Headset Support — Compatible with USB and RJ-9 wired or EHS wireless headsets.
- Optional Wi-Fi — Supports a compatible Yealink Wi-Fi adapter (sold separately).
Button Guide
Use the diagram below to identify the primary controls on the Yealink T33G desk phone.
- Soft Keys — Context-sensitive buttons aligned with on-screen options.
- Line Keys — Select a line, monitor calls, or access assigned functions.
- Navigator Key — Scroll and confirm menu selections.
- Mute Key — Toggle microphone audio on or off.
- Headset Key — Activate a connected headset.
- Voicemail Key — Access voicemail messages.
- Redial Key — Redial the most recently dialled number.
- Speaker Key — Enable or disable speakerphone mode.
- Volume Keys — Adjust ringer or speaker volume.
- Dial Pad — Standard 12-key keypad for dialling and character input.
Official Data Sheet
For full technical specifications, refer to the Yealink SIP-T33G Data Sheet .
