Audicom Telephone Training Adapter Y Splitter with RJ9/RJ12 Plug Connections for Corded Headset or Handset for Aastra Shoretel Cisco E20 Polycom 335 VVX400 Digium D40 D70 Altigen IP Phones(YTRJ-STAC)

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. COMPATIBLE PHONE LIST: BUY ONLY IF YOU HAVE ONE OF THE PHONE MODELS IN LIST Nortel: i2002 (NTDU91), i2004 (NTDU92), i2007 (NTDU96) Cisco: E20 video phone PolycomIP Phones: IP 300, 301, 335, 430, 450, 500, 501, 550, 560, 600, 601, 650, 670, CX200, CX300, CX500, CX600, CX700, VVX300, VVX310, VVX 400, VVX410, VVX500, VVX600, VVX1500 Digium Phones: Digium D40, Digium D45, Digium D50,Digium D70 Altigen: AT-500, AT-510, IP-600, IP-705, IP-710, IP-720 Phones Comdial: 8312 8412 Shoretel: 420, 480, 480G, 485 Starleaf: 2210 Aastra models: 6731i, 6735i, 6737i, 7446i, 9112i, 9133i, 9116, 9143i and 9480i