Phone Headset Noise Cancelling Mic RJ9 U10P Bottom Cable Compatible with Polycom

Noise cancelling microphone Enhanced noise-cancelling microphone Enhanced noise-cancelling microphone technology to reduce background noise. Provide max frequency response resulting in greater call clarity productivity and better service all round. COMPATIBILITY GUIDE: Aastra : 6865i 6867i 6869i 4222 4223 4224 4225 4422ip 4425ip 6731i 6735i 6737i 6739i 6753i 6755i 6757i 9112i 9133i 9143i 9480i 53i 55i 57i 480 480i 480e M6320 M5317 M5316 M5216 9417 9417CW 9516 9516CW Avaya : 1408 1416 2410 2420 9404 9408 9504 9508 4406D+ 4412D+ 4424D+ 4424LD+ 5410 5420 5610SW 5620SW 5621SW 6416D+M 6424D+M 4610 4610SW 4620 4620SW 4621 4621SW 4622SW 4625SW 4630 4630SW Avaya / Nortel : 1120e, 1140e, 1150e, 1165e, 1210, 1220, 1230, i2002(NTDU91), i2004(NTDU92), i2007(NTDU96), T7208 T7316 T7316e T7324 M7208 M7308 M7310 M7316 M7324 M6320 M5317 M5316 M5216 M3903 M3904 M3905 M2216 M2312 M7900 M9417 M9417CW M9516 M9516CW MITEL : 5312 5324 5320 5320e 5330 5330e 5340 5340e 5212 5215 5220 5224 5235 5240 4422 44