4Call K500QMB Corded QD Telephone Headset with NC Mic + VC for Aastra Adtran Alcatel Lucent Avaya Ascom Audioline Elmeg Gigaset Interquartz Lazerbuilt Safecom Ericsson Hybrex Ulytel Office IP Phone

Call center headset with noise-canceling Mic is ideal for most Standard Telephones Equipped with Modular RJ Headset Port COMPATIBLE PHONE LIST: BUY ONLY WHEN YOU HAVE ONE OF THE PHONES LISTED BELOW Aastra: Dialog 4222 4223 4224 4225 Adtran: IP321 331 430 650 670 706 712 Alcatel-Lucent: 4004 4020 4022 4035 4037 Telephones Ascom: Berkshire 200 400 600 800 SD30 MR30 MR51 MR61 AVAYA / Lucent: 6402D 6408D+ 6416D+M 6424D+M 8403 8410D 8434DX 4406D+ 4412D+ 4424D+ 4424LD+ 1408 1416 2410 2420 4610 4610SW 4612 4620 4620SW 4621 4621SW 4622 4622SW 4625 4625W 4630 4630SW 5410 5420 5610 562056215625 9404 9406 9408 9504 9508 DT1 DT3 DT5 Cable & Wireless: CWB 100H CWB 200H CWB 500 CWB 600 Commander NT40: Commander NT Economy Standard Advantage Principle Doro/Audioline: AUB3MW AUB6MW AL505 Casino Congress 100 200 X50 Sim 200 Sensor 500 TEL15HS Elmeg: 290 Ericsson: Dialogue 4147 Dialogue 4186 MD110 Gigaset: DE310 DE410 DE700IP DE900IP Hybrex: DK1-21 DK2-21 DK3-21 Interquartz: Gemini Gemini 9330-AV Gemini 9335 CLI Gemini 9335-AV Gemini Speakerphone Enterprise Speakerphone Enterprise Discovery Interquartz 98380 Lazerbuilt: Prestige 905K 906K 907K Orchid: DBT 2000 DBT 3000 BT Converse: 220 225 300 320 325 420 425 1100 1200 1300 1400 Paragon 450 Plantronics: A100 S10 S11 S12 S50 T10 T20 T50 T100 T110 SP-02 SP-04 SP-05 A100 T50 T100 PLX-400 PLX-500 Safecom: SDSIP-500IP SIP Phones Ulytel: Ulytel 1 Ulytel 2 Ulytel 5 Ulytel 4 (2-line)