Yealink SIP-T31 | Desktop phone

2 SIP accounts, Yealink HD Voice, 2.3” 132x64-pixel graphical LCD with backlight, Wall mountable, Support EHS Wireless Headset, Local 5-way conferencing, Two-port 10/100M Ethernet Switch, Headset, with PSU

  • Yealink HD Voice 
  • 2.3” 132x64-pixel graphical LCD with backlight 
  • Two-port 10/100M Ethernet Switch 
  • Opus codec support 
  • Up to 2 SIP accounts 
  • Local 5-way conferencing 
  • Support EHS Wireless Headset 
  • Unified Firmware
  • Support YDMP/YMCS 
  • Stand with 2 adjustable angles 
  • Wall mountable

Display and Indicator:

  • 2.3” 132x64-pixel graphical LCD with backlight 
  • LED for call and message waiting indication 
  • Dual-color (red or green) illuminated LEDs for line status information 
  • Intuitive user interface with icons and soft keys 
  • Multilingual user interface 
  • Caller ID with name and number 
  • Power saving

Feature keys:

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

Interface:

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

Audio Features:

  • HD voice: HD handset, HD speaker 
  • Smart Noise Filtering 
  • Wideband codec: Opus, G.722 
  • Narrowband codec: G.711(A/μ), G.723.1, G.729, G.729A, G.726, iLBC 
  • DTMF: In-band, Out-of-band (RFC 2833) and SIP INFO 
  • Full-duplex hands-free speakerphone with AEC 
  • VAD, CNG, AEC, PLC, AJB, AGC

Network and Security:

  • SIP v1 (RFC2543), v2 (RFC3261) 
  • Call server redundancy supported 
  • NAT traversal: STUN mode 
  • Proxy mode and peer-to-peer SIP link mode 
  • IP assignment: static/DHCP 
  • HTTP/HTTPS web server 
  • Time and date synchronization using SNTP 
  • UDP/TCP/DNS-SRV (RFC 3263) 
  • QoS: 802.1p/Q tagging (VLAN), Layer 3 ToS DSCP 
  • SRTP for voice 
  • Transport Layer Security (TLS) 
  • HTTPS certificate manager 
  • AES encryption for configuration file 
  • Digest authentication 
  • OpenVPN, IEEE802.1X 
  • IPv6 
  • LLDP/CDP/DHCP VLAN 
  • ICE

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

Directory:

  • Loal phonebook up to 1000 entries 
  • Black list 
  • XML/LDAP remote phonebook 
  • Smart dialing 
  • Phonebook search/import/export 
  • Call history: dialed/received/missed/forwarded

IP-PBX Features:

  • Busy Lamp Field (BLF), Bridged Line Apperance (BLA) 
  • Anonymous call, anonymous call rejection 
  • Hot-desking, voice mail 
  • Flexible seating 
  • Call park, call pickup 
  • Executive and Assistant 
  • Centralized call recording 
  • Visual voice mail 
  • Call recording

Management:

  • Configuration: browser/phone/auto-provision 
  • Auto provision via FTP/TFTP/HTTP/HTTPS for mass deploy 
  • Auto-provision with PnP 
  • Zero-sp-touch, TR-069 
  • Phone lock for personal privacy protection 
  • Reset to factory, reboot 
  • Package tracing export, system log

String Optional