Yealink SIP-T33G Classic Business IP Phone

The Yealink SIP-T33G is an entry-level, high-performance IP phone designed for small to large office environments. It combines a 2.4-inch color display, dual-port Gigabit Ethernet, and HD voice technology with a user-friendly interface, delivering reliable communication for modern workplaces. Ideal for businesses that need advanced features at an affordable price, the T33G supports multiple SIP accounts, conferencing, and flexible deployment options.

Product Features

High-Definition Audio

Equipped with Yealink HD Voice and Smart Noise Filtering technology, the SIP-T33G ensures clear, distraction-free communication. The full-duplex hands-free speakerphone includes Acoustic Echo Cancellation (AEC) for superior call quality.

Color Display

Features a 2.4-inch (320 x 240) backlit color LCD with 16-bit depth, providing clear visuals for caller information and call management.

Multi-Line Support

Supports up to 4 SIP accounts and 4 line keys with dual-color LEDs, allowing efficient handling of multiple calls. Includes support for up to 12 paperless DSS keys across 4 pages.

Networking & Connectivity

Dual-port Gigabit Ethernet (10/100/1000 Mbps) and integrated PoE (IEEE 802.3af Class 2) ensure high-speed network connectivity and flexible installation. Includes 1x RJ9 handset port and 1x RJ9 headset port (supports EHS35 wireless headsets).

Advanced Call Management

Supports local 5-way conferencing, Busy Lamp Field (BLF), Bridged Line Appearance (BLA), call recording, and hot-desking for efficient office communication.

Robust Security

Features TLS 1.3, SRTP for voice, HTTPS certificate manager, and AES encryption for configuration files to safeguard business communication.

Ergonomic Design

Includes a multi-angle adjustable stand with two positions and optional wall-mount capability. The Hall switch replaces traditional mechanical hooks for quieter operation and longer device lifespan.

Simplified Deployment

Unified firmware across the T3 series enables easy mass deployment and maintenance via the Yealink Device Management Platform (YDMP) or Yealink Management Cloud Service (YMCS).

Product Specifications

• SIP Accounts: Up to 4
• Line Keys: 4 with dual-color LEDs
• Display: 2.4-inch (320×240) backlit color LCD, 16-bit color
• Audio Codecs: Wideband: Opus, G.722, AMR-WB; Narrowband: G.711, G.723.1, G.729AB, G.726, iLBC
• Speakerphone: Full-duplex, AEC, Smart Noise Filtering
• Networking: Dual-port Gigabit Ethernet (10/100/1000 Mbps)
• Ports: 1x RJ9 handset, 1x RJ9 headset (EHS35 supported)
• PoE: IEEE 802.3af, Class 2 (3.5–5W typical)
• Dimensions: 212mm x 186mm x 146mm x 42mm
• Weight: ~0.45 kg (16 oz)
• Directory: Local phonebook up to 1,000 entries; supports XML/LDAP remote phonebooks and blacklisting
• Call Handling: Local 5-way conferencing, BLF, BLA, call recording, hot-desking
• Security: TLS 1.3, SRTP, HTTPS certificate manager, AES encryption
• Management: YDMP/YMCS, unified firmware support for mass deployment