Phone Features
• 2 VoIP accounts
• Call hold, mute, DND
• One-touch speed dial, hotline 
• Call forward, call waiting, call transfer
• Group listening, SMS, emergency call
• Redial, call return, auto answer
• Local 5-way conferencing
• Direct IP call without SIP proxy
• Ring tone selection/import/delete
• Set date time manually or automatically
• Dial plan 
• XML Browser, action URL/URI
• Integrated screenshots
• RTCP-XR, VQ-RTCPXR
• Enhanced DSS Key

Feature keys
• 2 line keys with LED
• 6 features keys: transfer, message, headset, 
redial, mute, hands-free speakerphone
• 5 navigation keys
• Volume control keys 

Package Features
• Package content:
 - Yealink SIP-T31 IP phone
- Handset with handset cord
- Ethernet Cable (1.5m CAT5E UTP Cable)
- Stand
- Quick Start Guide
- Power Adapter (Optional) 

Interface
• 2 x RJ45 10/100M Ethernet ports
• 1 x RJ9 (4P4C) handset port
• 1 x RJ9 (4P4C) headset port 

Other Physical Features
• Color: Classic Grey
• Wall mountable
• External Yealink AC adapter
AC 100~240V input and DC 5V/600mA output
• Power consumption (PSU): 2-3W
• Dimension (W*D*H*T):
188mm*189mm*162mm*50mm