The Yealink SIP-T31P is an entry-level, 2-line IP phone featuring a 2.3-inch 132x64-pixel backlit graphical LCD, HD voice with Smart Noise Filtering technology, and local 5-way conferencing. It includes dual 10/100M Ethernet ports, integrated Power over Ethernet (PoE) support, EHS headset compatibility, and uses TLS 1.3 for enhanced security