Description
Yealink SIP-T31G – Specifications
General
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Model: SIP-T31G
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Type: Entry-level IP Phone with Gigabit Ethernet
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Lines: Supports up to 2 SIP accounts
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Display: 2.3-inch graphical LCD, 132 × 64 pixels
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Backlight: Yes
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Power: Power over Ethernet (PoE) or optional adapter (5V/600mA)
Audio Features
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HD voice (wideband audio)
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Full-duplex speakerphone
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Acoustic Echo Cancellation (AEC)
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Noise suppression and voice enhancement
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Supported codecs: G.722, G.711(A/µ), G.723, G.726, G.729, iLBC
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DTMF support: In-band, RFC 2833, SIP INFO
Network & Security
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Dual Gigabit Ethernet ports (10/100/1000 Mbps)
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IPv4 / IPv6 support
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VLAN, QoS (802.1p/802.1Q, DSCP/ToS)
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SIP v1 & v2
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HTTPS, SRTP, TLS, 802.1X
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VPN support: OpenVPN, L2TP
Call Features
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Call hold, mute, transfer, forward
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Call waiting, call park, call pickup
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3-way local conferencing
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Redial, speed dial, hotline
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Caller ID and Message Waiting Indicator (MWI)
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Busy Lamp Field (BLF) support
Phone Features
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Local phonebook: up to 1000 entries
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Remote phonebook via XML/LDAP
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Call history: dialed, received, missed, forwarded
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Ringtone selection
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Intuitive user interface with soft-keys and navigation keys
Interfaces
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2 × RJ45 Gigabit Ethernet ports
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1 × RJ9 handset port
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1 × RJ9 headset port
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Wall-mountable
Dimensions & Weight
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Dimensions: 188 × 213 × 127 mm
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Weight: Approx. 0.77 kg
Environmental
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Operating temperature: -10°C to +50°C
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Humidity: 10–95% (non-condensing)
