The VT6300 is a high-end headset available in mono or duo options. The USB-cabled option provides call control on the cord, and is ideal for use with laptops or desk tops. The option that terminates in a Quick Disconnect (QD) connector are more used in call centre applications. An additional “bottom cable” is required to connect the QD option to desk phones, e.g. Yealink, Avaya, Mitel, or computers.