Description
Yealink SIP-T31P – Specifications
General
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Model: SIP-T31P
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Type: Entry-level IP Phone
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Operating System: Linux-based
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Display: 2.3-inch graphical LCD (132 × 64 pixels)
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Backlight: Yes
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Lines: Supports up to 2 SIP accounts
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PoE: Yes (Power over Ethernet, Class 1)
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Power Adapter: Optional (5V/600mA)
Audio Features
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HD Voice (Wideband Codec)
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Supported Codecs: G.722, G.711(A/µ), G.729, G.723, G.726, iLBC
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Full-duplex speakerphone
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Acoustic Shield technology
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DTMF (In-band, RFC 2833, SIP INFO)
Network & Security
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Dual-port 10/100 Mbps Ethernet
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IPv4/IPv6
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SIP v1 & v2
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VLAN, QoS
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HTTPS, SRTP, TLS, 802.1X
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Open VPN and L2TP support
Call Features
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Call hold, mute, transfer, forward
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Call waiting, call ID, call park, call pickup
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3-way local conferencing
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Redial, speed dial
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Busy Lamp Field (BLF)
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Message Waiting Indicator (MWI)
Phone Features
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Local phonebook: up to 1000 entries
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Phonebook search & import/export
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Call history: placed, received, missed
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XML and LDAP remote phonebook
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Ringtone selection
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LED indicators for call and message status
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Intuitive UI with 5 navigation keys
Interfaces
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2 × RJ45 Ethernet ports (10/100 Mbps)
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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 (phone + stand)
Environmental
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Operating temperature: -10°C to +50°C
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Humidity: 10–95% (non-condensing)
