Yealink SIP-T33G IP Phone (T33G)

Key Features:

• 2.7″ Color Display: Easy-to-read color screen shows call information and phone menus.

• Up to 4 SIP Accounts: Handle multiple lines or extensions from a single device.

• HD Voice (Optima): Enhanced wideband audio quality for clearer calls.

• Dual Gigabit Ethernet: 2 × 10/100/1000 Mbps ports with support for Power over Ethernet (PoE) to simplify installation.

• Wide Protocol Support: Compatible with major SIP platforms and VoIP services.

• Headset & EHS Support: RJ9 port and compatibility with Yealink EHS adapters for wireless headsets.

• Programmable Keys: Supports programmable line keys for speed dial, BLF, and feature shortcuts.

• Efficient Provisioning: Works with Yealink auto-provisioning tools for mass configuration and remote management.

Hardware & Technical Specs:

• Display: 2.7″ color LCD

• User Accounts: Up to 4 SIP accounts

• Ethernet: Dual Gigabit Ethernet 10/100/1000 Mbps (LAN + PC)

• Power: PoE (IEEE 802.3af) or optional power adapter

• Audio Quality:
  • Optima HD Voice with wideband codec support
  • Full-duplex speakerphone with Acoustic Echo Cancellation (AEC)

• Codecs: Opus, G.722, G.711(A/µ), G.723.1, G.726, G.729AB, iLBC

• Connectivity:
  • RJ9 headset port
  • Wi-Fi and Bluetooth via optional USB dongles (subject to model/firmware support)

• Functional Keys: Line keys, soft keys, navigation, redial, mute, hold, transfer, conference

• Security & Protocols: SIP v1/v2 (RFC 3261), VLAN, QoS, HTTPS/TLS/SRTP where supported

• Physical:
  • Desk stand (adjustable angle)
  • Optional wall-mountable