Yealink SIP‑T31G IP Phone (T31G)

Key Features:

• 2.8″ Color Display: Backlit 2.8‑inch color screen for clear call information and menus.

• Up to 2 SIP Accounts: Supports two VoIP accounts/lines for flexible line handling.

• HD Voice Quality: Yealink Optima HD Voice with wideband audio codecs for crystal‑clear conversations.

• Gigabit Ethernet: Dual 10/100/1000 Mbps network ports with Power over Ethernet (PoE) support (optional).

• Essential Telephony Features: Caller ID, call hold, transfer, forward, conferencing, redial, speed dial, and more.

• Headset Support: RJ9 headset port and EHS adapter compatibility for wireless headsets.

• Easy Provisioning: Support for auto‑provisioning via Yealink RPS/Boot for centralized deployment.

Hardware & Technical Specs:

• Display: 2.8″ color LCD, backlit

• SIP Accounts: Up to 2

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

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

• Audio:
  • Optima HD Voice with wideband codec support (Opus, G.722, etc.)
  • Full‑duplex speakerphone with Acoustic Echo Cancellation (AEC)

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

• Connectivity: RJ9 headset port; EHS support with appropriate adapter

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

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

• Physical: Desktop stand with adjustable tilt; optional wall‑mountable