Telco Buddy Training Splitter used to connect two headsets to the same telephone for training purposes. This allows both headsets to listen to the conversation and one person to talk. There are two mute switches which allows the user to mute either the supervisor or the trainee should the need arise.
The TA2 is used in line with the handset of phones that have reverse wiring. Could also be used for headset ports on Cisco phones.
Telco TA2 Training Splitter (Non Std Phones)