Yealink SIP-T31G HD Voice Gigabit IP Phone

Yealink SIP-T31G – Specifications

General

• Model: SIP-T31G

• Type: Entry-level IP Phone with Gigabit Ethernet

• Lines: Supports up to 2 SIP accounts

• Display: 2.3-inch graphical LCD, 132 × 64 pixels

• Backlight: Yes

• Power: Power over Ethernet (PoE) or optional adapter (5V/600mA)

Audio Features

• HD voice (wideband audio)

• Full-duplex speakerphone

• Acoustic Echo Cancellation (AEC)

• Noise suppression and voice enhancement

• Supported codecs: G.722, G.711(A/µ), G.723, G.726, G.729, iLBC

• DTMF support: In-band, RFC 2833, SIP INFO

Network & Security

• Dual Gigabit Ethernet ports (10/100/1000 Mbps)

• IPv4 / IPv6 support

• VLAN, QoS (802.1p/802.1Q, DSCP/ToS)

• SIP v1 & v2

• HTTPS, SRTP, TLS, 802.1X

• VPN support: OpenVPN, L2TP

Call Features

• Call hold, mute, transfer, forward

• Call waiting, call park, call pickup

• 3-way local conferencing

• Redial, speed dial, hotline

• Caller ID and Message Waiting Indicator (MWI)

• Busy Lamp Field (BLF) support

Phone Features

• Local phonebook: up to 1000 entries

• Remote phonebook via XML/LDAP

• Call history: dialed, received, missed, forwarded

• Ringtone selection

• Intuitive user interface with soft-keys and navigation keys

Interfaces

• 2 × RJ45 Gigabit Ethernet ports

• 1 × RJ9 handset port

• 1 × RJ9 headset port

• Wall-mountable

Dimensions & Weight

• Dimensions: 188 × 213 × 127 mm

• Weight: Approx. 0.77 kg

Environmental

• Operating temperature: -10°C to +50°C

• Humidity: 10–95% (non-condensing)