SUNDELY Call Center Telephone IP Phone Headset Boom Mic 4Pin RJ9 Connector Fits for Cisco 3Com Aastra Alcatel-Lucent AltiGen Ascom Avaya Cable and Wireless Comdial Commander Doro Audioline Ericsson ESI

Features: Microphone noise abatement, real sound body aircraft operator. Screw headphone cable, avoid the use of the process wound. Flexible metal hose, MIC positioning accuracy, structural design, durable, comfortable to wear. Adjustable boom to ensure the best call quality. Hearing protection technology, care of the user's hearing. Compatible Use for: phone sales, telephone counseling services, insurance, hospitals, banks, telecom operators, enterprises etc. 3Com: 3102, 3103 Aastra: 2564, 2465, 480, 480e, 480i, 53i, 55i, 57i, 57iCT, 6753i, 6755i, 6757i, 9112i, 9133i, 9143i, 9480i M4000, M4020, M5208, M5209, M5216, M5317, M7900, M8001, M8003, M9009, M9516 i2002, i2004, i2004IP (not compatible with i2400 phase II and i2004 POE phones) Alcatel-Lucent telephone:4004, 4020, 4022, 4035, 4037 AltiGen phone:500, 510, 600, 705, 710, 720 Ascom:Berkshire 200, 400, 600, 800, SD30, MR30, MR51, MR61 AVAYA / Lucent: 2410, 2420, 4406D+, 4412D+, 4424D+, 4424LD+, 4610, 4620, 4621 5410, 5420, 5610, 5620, 6402D, 6408D+, 6416D+M, 6424D+M, 8403, 8434DX DT1, DT3, DT5 Cable & Wireless:CWB 100H, CWB 200H, CWB 500, CWB 600 Fits for Cisco (CIS) IP Phones LCAP-118: 7961, 7962, 7965 Comdial:8312, 8412 Commander NT40:NT Economy, Standard, Advantage, Principle Doro/Audioline:AUB3MW, AUB6MW, AL505, Casino, Congress 100, 200, X50, Sim 200, Sensor 500, TEL15HS Ericsson:Dialogue 4147, Dialogue 4186, MD110 ESI Phones:ESI-48-Key, 48-Key