Audicom H200STAC Corded Office Telephone RJ Headset with flexible Noise Canceling Mic for Aastra Shoretel Cisco E20 Polycom 335 VVX400 Digium D40 D70 Altigen 500 720 Comdial & Starleaf IP Phones

Direct connect over the head headset is ideal for some specific Telephones with Modular RJ Headset jack COMPATIBLE PHONE LIST: BUY ONLY IF YOU 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