Telephone Headset Headphone with Microphone, for Plantronics A100, S10, S11, S12, S50, T10, T20, T50, T100, T110, Nortel Networks, Call Center IP Phone Headset, RJ9 Plug, Monaural Over-The-Head

Compatible Models for Reference Plantronics A100, S10, S11, S12, S50, T10, T20, T50, T100, T110 Nortel Networks (Northern Telecom) Meridian PBX: M3903, M3904, M3905, M2216, M2008, M2616 Meridian Norstar: M7208, M7310, M7324, T7208, T7316, T7316E, M7900 Nortel 3903, 3904, 3905 Meridian Option M3110, 3310, 3820,i2002 (ip2002), i2004 (ip2004) NT8B20, NT8B30, NT8B40, NT8B50, NTZK23AA, AB: (M2216):ACDI NEC Aspire Phone, Electra Elite DTerm, Series E, Models DTU-8, DTU-8D, DTU-16, DTU-16D, DTU-32, DTU-32D, DPT-8, DPT-8D, DPT-16, DPT-16D, DPT-32, DPT-32D, DTerm Series Superset 4000 Series, Models 4015, 4025, 4125, 4150 Mitel IP Series, Models 5000 IP, 5010, 5020, 5020i, 5040i, 5050, 5055 IP, 5055 SIP, 5140, 5201, 5207 IP, 5210 IP, 5212, 5215, 5220, 5224, 5230, 5235, 5240, 5550 IP Siemens/ROLM Optiset E Series with CA or HA option modules Polycom SoundPoint IP Phone Series, Models 300, 301, 430, 500 (rev. 5 or later), 501, 550, 600, 601. 650 General Electric GE Telephone Model 2-9451, 2-9490 Toshiba DKT-3001, DKT-3010S, DKT-3014SDL, DKT-3020S, DKT-3020SD, Strata CIX, DP5022-SD, DP5023-SD, DP5018-S, DP5000-series AVAYA / Lucent 8403, 8410D, 8434DX,4406D+, 4412D+, 4424D+, 4424LD+,2410, 2420,4610, 4620, 4621,5410, 5420,5610, 5620 INTEL-TEL 8520, 8560, 8600, 8620, 8660, 8662, 8690 ESI 48-Key IP Feature Phone, 48-Key Digital Feature Phone Commander NT40, NT Economy, Standard, Advantage, Principle