Yealink SIP-T33G Classic Business IP Phone

Yealink SIP-T33G is a powerful entry-level IP phone that delivers a premium user experience through a combination of superior HD audio, a vibrant 320×240 color display, and support for up to 4 SIP accounts. Designed for small to medium-sized businesses, this phone features dual Gigabit Ethernet ports, Power over Ethernet (PoE) support, and local 5-way conferencing. With a newly upgraded chip for smoother performance, intuitive navigation, and Smart Noise Filtering Technology, the T33G enhances productivity and call clarity at an affordable cost.

Whether for remote teams, call centers, or enterprise desktops, the T33G is built to handle modern communication demands—offering seamless provisioning, integration with Yealink’s Device Management Platform, and compatibility with Yealink EHS35 wireless headset adapters.

Product Features

Stronger Performance, More Capabilities
Powered by a high-efficiency chip, the T33G ensures faster processing, enhanced responsiveness, and the ability to scale services for various business needs.

Vivid 4-Inch Color Display
The 320×240-pixel backlit color screen offers sharp visuals and intuitive menu navigation, improving user experience during calls and configuration.

HD Audio with Smart Noise Filtering
Both the handset and speakerphone deliver HD voice quality, enhanced with Yealink’s Smart Noise Filtering to suppress background noise during conversations.

Professional Call Management Tools
Supports 4 VoIP accounts, local 5-way conferencing, call transfer, hold, mute, DND, call forwarding, hotline, redial, and BLF—ideal for high-volume workflows.

Efficient Contact Management
Includes local phonebook (up to 1000 entries), LDAP/XML remote phonebook, blacklists, call logs, smart dialing, and call history search/import/export.

Enhanced DSS Keys & LED Indicators
4 line keys with dual-color LEDs provide at-a-glance status updates and support for advanced functions like speed dial, BLF, and call park.

Flexible Deployment & Secure Management
Zero-touch provisioning via FTP/TFTP/HTTP/HTTPS, TR-069, and PnP, along with support for TLS, HTTPS, SRTP, and OpenVPN for enterprise-grade security.

Integrated PoE & Gigabit Networking
Dual 10/100/1000 Mbps ports with PoE support ensure high-speed network connectivity without additional power cables.

Headset Ready
Compatible with Yealink wireless headsets via EHS35 adapter, as well as standard RJ9 wired headsets.

Modern, Practical Design
Compact, ergonomically styled with an adjustable stand for comfortable viewing angles, and wall-mountable for flexible deployment.

Product Specifications

Audio Features:

• HD voice (handset & speaker)
• Smart Noise Filtering
• Codecs: Opus, G.722 (wideband); G.711 A/μ, G.729AB, G.726, G.723.1, iLBC (narrowband)
• Echo cancellation (AEC), PLC, VAD, CNG, AGC, AJB
• Full-duplex speakerphone

Telephony Features:

• 4 SIP accounts
• Call forwarding, transfer, hold, mute, redial, return
• DND, call waiting, hotline, group listening, SMS
• 5-way local conferencing
• Anonymous call & rejection
• Busy Lamp Field (BLF), Bridged Line Appearance (BLA)
• Hot-desking, voicemail, call park/pickup, flexible seating
• XML browser, action URL/URI

Display & Indicators:

• 4″ 320×240-pixel TFT color display with backlight
• LED for call/message alerts
• Dual-color LEDs for line status
• Intuitive icon-based UI with screensaver and multilingual support

Directory:

• Local phonebook (up to 1000 entries)
• XML/LDAP remote phonebook
• Blacklist, call history
• Smart dialing and contact search

Interfaces:

• 2 x RJ45 Gigabit Ethernet ports (10/100/1000 Mbps)
• PoE IEEE 802.3af, Class 2
• 1 x RJ9 (handset), 1 x RJ9 (headset)
• Supports Yealink EHS35 adapter

Network & Security:

• IPv4/IPv6
• NAT traversal: STUN, static IP/DHCP
• OpenVPN, 802.1X, VLAN, LLDP/CDP
• SIP v1/v2 (RFC 2543/3261)
• QoS, SRTP, TLS, HTTPS, AES-config encryption

Management:

• Auto-provisioning via FTP/TFTP/HTTP/HTTPS
• TR-069, PnP, Zero-Sp-Touch
• Web-based configuration, phone lock, factory reset
• System log, diagnostics, firmware upgrade

Physical:

• Dimensions: 212 x 186 x 146 mm
• Wall-mountable
• Power adapter (optional): AC 100–240V input / DC 5V/600mA output
• Power usage: PSU 2–3W / PoE 3.5–5W
• Operating temp: -10°C to +50°C
• Operating humidity: 10%–95%

Package Contents:

• Yealink SIP-T33G IP Phone
• Handset with cord
• Ethernet cable (1.5m CAT5E)
• Stand
• Quick Start Guide