Panasonic KX-UTG300-B SIP phone system is an affordable and scalable SIP phone which features a 5-inch, WVGA 800480 pix, color graphical TFT LCD with capacitive, single touchscreen. It features HD Voice and Full Duplex Speaker Phone which ensures crystal clear voice. With the Panasonic KX-UTG300-B SIP phone system, you can link up to two expansion modules and each modules can have 36 extensions. The phone has 2 gigabit ethernet ports, built in bluetooth device and supports local 3-way conferencing.