– Plantronics Y-training adapter with mute- Allows 2 people to hear both sides of the conversation- Use with Plantronics amplifiers and H-series headsets- Use with Plantronics amps or direct connect applications- The Y tail plugs into existing Plantronics 10 curly cord the trainer plugs into the short end and the trainee plugs into the long end- Red inline switch on the cord allows user to switch who speaks – one of the two users is always muted- Both users can always listen – but only one user can be heard at a time- Also has a manual mute button- Plantronics Y-training adapter with mute includes a QD clamp (PL-62976-01) to reinforce the connection where Y cord connects to the amplifier cordPL2701903