Yealink Wireless Headset Adaptor (YEA-EHS36) - Interface: RJ-12 Headset Jack, Headset Compatibility: Compatible With Jabra, Plantronics And Sennheiser, Remote Operation: Remote Call Answer/Termination, Plug And Play: Yes, Compatibility: Yealink T27G, T29G, T41S, T42S, T46S And T48S IP Phones