Splitter Training Adapter with Mute, Telephone Handset Box Volume Control Intelligent Sound Closed for Phone Handsets (1, Black)

One In Two Out: The training adapter is used for the call center, training new people or monitoring. Designed to be used as atraining adaptor. It allows for supervisor training and call pick up. Easy To Use: The training adapter is easy to use, a must have for busy call centres. Great use for call center / telephone marketing trainings. Compact And Stylish Design: The training adapter is compact and stylish design. It accommodates all major telephone headsets, easy to set up, plug and play. Can Use Interfaces Alone: You can use one of these interfaces alone to allow the original earphone to adjust the volume and close the sound. Can plug either into handset port or headset port. Supplied With Souble Jack And Mute Switch：The two headphones can adjust the volume of the speakers separately, supplied with double jack and mute switch.