The Yealink T44U is a mid-range 12-line SIP IP phone. Gigabit Ethernet, USB 
port (headset/BT dongle), color display, HD Voice with Smart Noise 
Filtering, Gigabit PoE. Available in a Microsoft Teams-certified variant. 
Compatible with Teams Phone, 3CX, and Asterisk. Touchline — authorized 
Yealink dealer, South India.