Wantek RJ9 Telephone Training Adapter Y Splitter for Wired Headset or Handset Compatible with Plantronics Polycom Avaya Aastra Shoretel Nortel Meridican NEC Cisco Yealink Grandstream and Other Phones;

Audicom Telephone Training Adapter Y Splitter with RJ9/RJ12 Plug Connections for Corded Headset or Handset for Cisco Unified IP Phones 7931G 7940 and Plantronics MX10 Vista Modular Adapters(YTRJ-CSB)

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. Now both users can simultaneous listening / talking into one conversion via this adapter.

Works for Phones:
Plantronics Amplifier: M10, M12, M22 & MX10 Vista Modular Adapters
Cisco IP Phones: 7931G, 7940, 7940G, 7941, 7941G, 7942, 7942G, 7945, 7945G, 7960, 7960G, 7961, 7961G, 7962, 7962G, 7965, 7965G, 7970, 7970G, 7971, 7971G, 7975, 7975G 6921, 6941, 6945, 6961, 7821, 7841, 7861 8811 8841 8851 8861 8941, 8945, 8961, 9951, 9971