Yealink T33G 4-line SIP IP phone with color graphical display, HD 
Voice, Smart Noise Filtering, PoE, 2x 10/100Mbps Ethernet. Ideal for 
supervisors and multi-line office users. Compatible with Teams Phone, 
3CX, Asterisk, and all SIP systems. Touchline, authorized Yealink dealer, 
South India.