The Jabra Supervisor QD cord 8800-02-01 connects two QD headsets to one phone for training or conferencing. It fits between the headset cable and the telephone connection cable or USB adapter, so a supervisor and another participant can use headsets on the same call.
A mute switch on the supervisor side lets the supervisor mute or unmute their microphone during the call. This provides a simple way to control whether the supervisor speaks while listening in. The cord is designed for supervision and shared headset use, with the mute control built into the cable.