Audio
Voice codecs	G.722, G.729, AGC, G.729A, AJB, PLC, G.711Mu, VAD, G.711a, G.723.1, G.726, iLBC, CNG, OPUS
Speakerphone
Microphone mute
Comfort noise generation (CNG)
Packet loss concealment (PLC)
Certificates
Compliance certificates	RoHS, REACH
Sustainability compliance
Design
Product type	IP Phone
Handset type	Wired handset
Product colour	Grey
Mounting	Desk/Wall
Wall mountable
Display
Display	LCD
Display diagonal	5.84 cm (2.3")
Display resolution	132 x 64 pixels
Touchscreen
Backlight display
Logistics data
Harmonized System (HS) code	85171800
Management features
Plug and Play
Network
Ethernet LAN interface type	Gigabit Ethernet
Ethernet LAN data rates	10,100,1000 Mbit/s
Networking standards	IEEE 802.3af, IEEE 802.1p, IEEE 802.1Q, IEEE 802.1x
Ethernet LAN
Wi-Fi
Bluetooth
Quality of Service (QoS) support
DHCP client
Operational conditions
Operating temperature (T-T)	-10 - 50 °C
Operating relative humidity (H-H)	10 - 95%
Packaging content
Number of handles included	1 pc(s)
Mounting kit
Ethernet cable
Handset
Quick start guide
Phone features
Lines quantity	2 lines
Phonebook capacity	1000 entries
Number of VoIP accounts	2
Answering machine
Call waiting
Speed dialling
Call hold
Call forwarding
Caller ID
Conference call
Redialing
Anonymous call
Anonymous call rejection
Full duplex
Call return
Call transfer
Call history
SIP registrar server
Ports & interfaces
Ethernet LAN (RJ-45) ports	2
RJ-9 ports quantity	2
DC-in jack
Power
AC adapter input voltage	100 - 240 V
AC adapter output voltage	5 V
AC adapter output current	0.6 A
Power consumption (typical)	3 W
Power over Ethernet (PoE)
Weight & dimensions
Width	188 mm
Depth	189 mm
Height	162 mm
Package width	213 mm
Package depth	210 mm
Package height	103 mm

Yealink SIP-T31G is an entry-level IP phone with high performance and offers support for 2 VoIP accounts as well as local 5-way telephone conferences. Other features include a dual-port Gigabit Ethernet port with integrated PoE, EHS35 support for the Yealink wireless headset and an adjustable stand.

Highlights

• Stronger performance, more options
• Excellent HD audio quality
• Classic design with practical details
• Dual-port Gigabit Ethernet
• Supports PoE

Product type

• Corded device
• ear category (ElektroG): relevant, category 6: small IT devices - and telecommunications technology, small devices for IT and telecommunications technology B2C

Specifications

• Mounting: table mounting, wall mounting

Telephone properties

• Headset connectivity: RJ9
• Hands-free function
• Telephone type: SIP
• Number of function keys: 6
• Number of telephone book entries: 1000

Display

• Display diagonal Inch: 2.3 \dlash- Display diagonal cm: 5.8 cm
• Display technology: LCD
• Display type: monochrome
• Display lighting

Power supply

• PoE standard: PoE - 802.3af
• Power supply: optional
• Mains, PoE

Basic properties

• Color: Dark gray
• Manufacturer color name: Classic gray
• Height: 162 mm
• Length/Depth: 189 mm
• Width: 188 mm

Scope of delivery

• Yealink SIP-T31G
• Handset with cable
• Ethernet cable (1.5 m CAT5E UTP cable)
• Stand holder
• Quick start guide