Plantronics “QD” stands for Plantronics Quick Disconnect.
The Plantronics QD (quick disconnect) is a proprietary connector featured on the Plantronics H-Series and Plantronics P-series headsets. It connects the headset to the matching cable providing in a simple user friendly but reliable connection. It allows the user to disconnect the headset if needed during a call and reconnect; this is similar to placing the call on hold.
This is a feature that allows you to walk away from the telephone without having to remove the headset.
old version (prior to 2005)
newer version (2005-2008)
Current QD version (2008 – current) original QD version is not compatible with the newer versions.
Plantronics headsets are sold separately from the Plantronics amplifiers so you can choose the style that fits your needs.