The Jabra BIZ 1500 is an entry level, low-cost professional corded headset built for cost-conscious contact centres. With noise-cancellation technology, background noise is reduced, providing a more professional customer experience on every call. Professional Corded Headset for Deskphones. Jabra BIZ 1500 duo QD is a duo headset with a QD (Quick Disconnect) plug that provides instant connectivity to a wide range of deskphone systems.