| Audio Features |
HD Voice: HD handset, HD speaker |
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Smart Noise Filtering |
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Wideband Codec: Opus, G.722 |
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Narrowband Codec: G.711(A/μ), G.723.1, G.729AB, G.726, iLBC |
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DTMF: In-band, Out-of-band (RFC 2833) and SIP INFO |
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Full-duplex Hands-free Speakerphone with AEC |
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Other Audio Features: VAD, CNG, AEC, PLC, AJB, AGC |
| Phone Features |
VoIP Accounts: 2 |
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Call Features: 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 |
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Conferencing: Local 5-way conferencing |
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Direct IP Call: Without SIP proxy |
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Ring Tone Management: Selection, import, delete |
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Date/Time Setting: Manual or automatic |
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Dial Plan |
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XML Browser, Action URL/URI |
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Integrated Screenshots |
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RTCP-XR, VQ-RTCPXR |
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Enhanced DSS Key |
| Directory |
Local Phonebook: Up to 1000 entries |
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Black List |
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XML/LDAP Remote Phonebook |
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Smart Dialing |
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Phonebook Management: Search, import, export |
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Call History: Dialed, received, missed, forwarded |
| IP-PBX Features |
Busy Lamp Field (BLF), Bridged Line Appearance (BLA) |
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Anonymous Call, Anonymous Call Rejection |
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Hot-desking, Voice Mail |
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Flexible Seating |
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Call Park, Call Pickup |
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Executive and Assistant |
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Centralized Call Recording |
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Visual Voice Mail |
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Call Recording |
| Display and Indicator |
LCD: 2.3” 132×64-pixel graphical LCD with backlight |
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LED Indicators: Call and message waiting indication |
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Line Status LEDs: Dual-color (red or green) illuminated |
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User Interface: Intuitive with icons and soft keys |
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Multilingual Interface |
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Caller ID: With name and number |
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Power Saving |
| Feature Keys |
Line Keys: 2 with LED |
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Feature Keys: Transfer, message, headset, redial, mute, hands-free speakerphone |
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Navigation Keys: 5 |
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Volume Control Keys |
| Interface |
Ethernet Ports: Dual-port Gigabit Ethernet |
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Power Over Ethernet (PoE): IEEE 802.3af, class 2 |
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Handset Port: 1 x RJ9 (4P4C) |
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Headset Port: 1 x RJ9 (4P4C) |
| Other Physical Features |
Color: Classic Grey |
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Wall Mountable |
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External Yealink AC Adapter: AC 100~240V input and DC 5V/600mA output |
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Power Consumption (PSU): 2-3W |
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Power Consumption (PoE): 3-4W |
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Dimensions (WDH*T): 188mm x 189mm x 162mm * 50mm |
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Operating Humidity: 10~95% |
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Operating Temperature: -10~50°C (+14~122°F) |
| Management |
Configuration: Browser/phone/auto-provision |
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Auto Provision: Via FTP/TFTP/HTTP/HTTPS for mass deploy |
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Zero-sp-touch, TR-069 |
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Phone Lock: For personal privacy protection |
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Reset, Reboot: Reset to factory, reboot |
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Package Tracing Export, System Log |
| Network and Security |
SIP Protocol: SIP v1 (RFC2543), v2 (RFC3261) |
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Call Server Redundancy: Supported |
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NAT Traversal: STUN mode |
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Proxy Mode and Peer-to-Peer SIP Link Mode |
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IP Assignment: Static/DHCP |
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Web Server: HTTP/HTTPS |
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Time and Date Synchronization: Using SNTP |
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Protocols: UDP/TCP/DNS-SRV (RFC 3263) |
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QoS: 802.1p/Q tagging (VLAN), Layer 3 ToSDSCP |
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Security: SRTP for voice, Transport Layer Security (TLS), HTTPS certificate manager, AES encryption for configuration file, Digest authentication, OpenVPN, IEEE802.1X |
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IPv6 |
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LLDP/CDP/DHCP VLAN |
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ICE |
| Package Features |
Package Contents: Yealink SIP-T31G IP phone, Handset with handset cord, Ethernet Cable (1.5m CAT5E UTP Cable), Stand, Quick Start Guide, Power Adapter (Optional) |
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Quantity per Carton: 10 PCS |
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Net Weight per Carton: 9.98 kg |
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Gross Weight per Carton: 10.836 kg |
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Giftbox Size: 213 mm x 210 mm x 103 mm |
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Carton Measurements: 535 mm x 443 mm x 227 mm |
