Tech specs
Brand
Yealink
Product Line
Yealink
Model
SIP-T31G
Manufacturer
Yealink
IP Address Assignment
DHCP, PPPoE, Static
IP Telephony Network Ports
2 x Ethernet 10Base-T/100Base-TX/1000Base-T
Network Features
Class 2 PoE, Lightweight Directory Access Protocol (LDAP), Network Address Translation (NAT)
Network Protocols
DNS SRV, HTTP, HTTPS, IP, Link Layer Discovery Protocol (LLDP), SRTP, STUN, TCP, TFTP, UDP
Phone Connections
Handset jack / RJ-9, Headset jack / RJ-9
Backlit Display
Yes
Color Support
Monochrome
Display Diagonal Size
2.3 inch
Display Diagonal Size (metric)
5.8 centimetre
Display Location
Base
Display Resolution
132 x 64 pixels
Display Type
LCD display
Indicators & Controls
Voice message waiting indicator
Multiple Conferencing
5-way
Phone Directory Capacity
1000 names & numbers
Speakerphone
Yes
Voice Codec
G.711A/µ, G.722, G.723.1, G.726, G.729, G.729a, iLBC, Opus
Additional Functions
Call recording, Do Not Disturb (DND), Intercom, Mute
Call Services
Call Forwarding, Call Hold, Call Transfer, Call Waiting, Caller ID, Message Waiting Capability, Voicemail
Caller ID Type
Caller ID
Dialer Location
Base
Lines Supported
2 lines
Main Features
Integrated Ethernet switch, Multiple VoIP protocol support
Packaged Quantity
1
Placing/Mounting
Table-top, Wall-mountable
Power Over Ethernet (PoE) Support
Yes
Product Type
VoIP phone
Quality of Service
IEEE 802.1p, IEEE 802.1Q (VLAN)
Security
TLS
Voice Features
Acoustic echo cancellation (AEC), Adaptive jitter buffer (AJB), Automatic gain control (AGC), Comfort noise generation (CNG), HD Voice, Packet loss concealment (PLC), Voice activity detection (VAD)
VoIP
Yes
VoIP Protocols
SIP, SIP v2, SRTP
Volume Control
Yes
Cables
Ethernet cable - 1.5 m
Phone Accessories Included
Stand
Base Depth
18.9 centimetre
Base Height
16.2 centimetre
Base Width
18.8 centimetre
Color
Classic gray
Color Category
Gray
ENERGY STAR Certified
No
EPEAT Compliant
No
TCO Certified
No