4Call H263MA Corded RJ Telephone Headset Dual Ear with NC Microphone for Aastra Nortel Nec Mitel ShoreTel Toshiba Siemens GE InterTel Sprint Talkswitch Iwatsu Packet8 ESI Allworx 3Com Office IP Phones

COMPATIBLE PHONE LIST: BUY ONLY WHEN YOU HAVE ONE OF THE PHONES LISTED BELOW
Northern Telecom (Nortel): 1120E IP, 1140E IP, 1150E IP, i2002 (ip2002), i2004 (ip2004), 2465, 2564, M3903, M3904, M3905, M7208, T7208, M7308, M7310, M7316, T7316, T7316E, M7324, M7900, M8001, M8003, M9516, M9009, NT8B20, NT8B30, NT8B40, NT8B50, NTZK23AA, AB: (M2216):ACDI, Vista Powertouch 480, 480e, 480i NEC: Electra Elite IPK Dterm Series E models DTU-8, DTU-8D, DTU-16, DTU-16D, DTU-32, DTU-32D, DTP-8, DTP-8D, DTP-16, DTP-16D, DTP-32, DTP-32DDT700, DT730, DT750, DT300, DT310, DT330; Dterm Series i; Aspire , DSX, ETJ, ETZ Series Mitel: SuperSet 4000 Series models 4015, 4025, 4125, 4150 (rev G or newer); IP Phone: models 5010, 5020, 5040, 5055, 5140, 5201, 5205, 5207, 5210, 5212, 5215, 5220, 5224, 5230, 5235, 5240, 5250, 5312, 5324, 5330, 5340, 5550 Aastra: 480e, 480i, 53i, 55i, 57i, 57iCT, 5370, 5370i, 5380, 5380i, 6739i, 6753i, 6755i, 6757i, 6757i CT, 6771, 6773, 6773ip, 6775, 6775ip, 7434ip, 7446ip, 9112i, 9133i, 9143i, 9480i Siemens: Optiset E (CA or HA Option Module) GE: Model 2-9451 3Com: Model 3102, 3103 Toshiba: DKT 3001, 3010S, 3020S, 3020SD, 3014SDL, Strata CIX, DP5022-SD, DP5023-SD, DP5018-S, DP5000-series (note: DKT3000 series phones require Toshiba "BHEU ADAPTER" (sold by Toshiba) Inter-Tel: 8520, 8560, 8600, 8620, 8660, 8662, 8690 Encore ECX 1000 and ECX 2000 Sprint: Protoge models: 475716, 475718 Talkswitch: Model TS-600 ShoreTel: IP100, IP212K, IP230, IP265, IP530, IP560, IP560G, IP565G, 565, 565G Iwatsu: IX-5800, IX-5810, IX-5900, IX-5910, IX-5930 IX 12KTD-3 and IX 24KTD-3 Packet8 (8x8): 6753i, 6755i, 6757i, 53i, 55i, 57i ESI: 48-Key IP Phone, 48-Key Digital Phone, 40D,, 40IP, 60D, 60IP Allworx: IP 9112, 9204, 9212, 9222, 9224 IP Phones

• WORKS ONLY FOR PHONES LISTED IN DESCRIPTION, BUY ONLY WHEN YOU HAVE ONE OF THE PHONES LISTED. CONTACT US FOR GUIDE IF YOU ARE NOT SURE ABOUT YOUR PHONE COMPATIBILITY. NOT COMPATIBLE WITH CISCO SPA PHONE SERIES!.
• Direct connect headset, no additional amplifier or adapter required. Adjustable fit headband and comfortable ear cushions enhance for wearing comfort, even for long periods..
• With two earpieces and a noise canceling microphone, this headset is ideal for noisy offices. It delivers high quality sound to both ears, enabling you to concentrate fully on the caller with minimal distraction & superior sound pick up..
• Flexible microphone boom, 270 degree rotatable, which adjusts to suit your preference, you can also choose to wear the microphone on either your right or left side..
• Long coiled cord stays out of your way by stretching for long reach, and coiling up for regular use. Shirt clip keeps the weight of the cord off your head while you talk, and lets the headset hang freely when you take it off..