4Call K263MC Corded RJ Telephone Headset Dual Ear with Noise Canceling Mic for Aastra Shoretel Nortel Cisco E20 Polycom 335 VVX400 Digium D40 D70 Altigen 500 720 Comdial & Starleaf Office IP Phones

Direct Telephone headset with noise-canceling is ideal for most Standard Telephones Equipped with Modular RJ Headset Port
COMPATIBLE PHONE LIST: BUY ONLY IF YOU HAVE ONE OF THE PHONES IN LIST
Nortel: i2002 (NTDU91), i2004 (NTDU92), i2007 (NTDU96)
Cisco: E20 video phone
Polycom?IP 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