Telephone Training Adapter Y Splitter for Headset or Handset for Nortel Meridican, Norstar, Avaya, Ashtra, Mitel, Polycom, Ge and Other IP Phone auspowers_batchthree DESCRIPTIONCharge your light on the for POWERTEC DESCRIPTIONCharge your light on the go with this compact charging cable Safety Assurance: Our usb type c car charger comes with a built in smart IC chip that prevents your device from overcurrent Now both users can simultaneous listening talking into one conversion via this adapter Very easy setup Y training adapter splitter that you can plug into either the telephone handset port or headset port and the adapter splitter will give you two more ports to headset or handset corded plug in