http://www.infinititelecommunications.com.au/phone-systems/phone-system-handsets/hybrex-phone-handsets/hybrex-previous-model-handset/hybrex-dk2-21-handset.html
Handling Two Calls on the Hybrex DK2-21 Phone Handset - Contemporary style, large backlit tilt adjustable 4 line LCD display and executive features characterise the DK2 series digital key phone handsets. Available in an attractive charcoal colour, the feature set of the DK2 series includes full hands free operation, extensive bi-colour lit system keys, headset socket, and the option of superior full wireless headset operation with compatible Bluetooth headsets. With its 4 line display and companion DSS console/s the DK2 forms a fully functional operator console for busy reception areas or Hotel front desk. As a standalone the DK2 is an executive class handset to suit those who desire a top of the line telephone. As with other DK series handsets the DK2 utilises single pair wiring making deployment over existing installed cabl
