"Y" Training Adapter
The Y training cable allows you to connect two headsets with QD (Quick Disconnect) connections to one phone. It also includes a mute switch which allows you to mute either headset.
This adapter is compatible with the following products:
It is not compatible with the S12 or any cordless/wireless products. (A CA10 with a 2.5mm to QD adapter cable is the only exception.)
The part number for the Y training adapter is 27019-03.
There are 2 versions of the Y training adapter. The difference is the version and shape of the QD lock.
27019-03 has62976-01 - Latest version of the Quick Disconnect (QD) lock
27019-01 had29733-01 - Older version of QD lock
If you have the older style of QD connection (which has a flat edge rather than a semi-circle at the end), then we regret that your Y training cord has been discontinued and is no longer available.