SUNDELY IP Office Phone Headset Earpiece RJ9 for Alcatel Avaya BT Converse Paragon Cisco Grandstream Mitel NEC Panasonic Polycom Snom Yealink Volume Control Adjustable Mic Monaural Noise Cancelling

• [Wide Compatibility] Equipped with a in-line 2 modes (3 wire sequence for each mode) switch, will be compatible with most telephones with RJ9 4-pin modular connectors, suitable for using in business office customer service, conference calls, phone sales, call center, telephone counseling services, insurance, hospitals, banks, telecom operators, enterprises, etc.
• [Comfortable Wearing] Compact, ergonomic and efficient single-ear hands-free design, soft replaceable artificial leather ear cushion, adjustable headband, 330° rotatable boom mic, noise-canceling microphone with mute function, in-line volume control adjusted to the good clear sound you need
• [Easy to Use] Plug and play, hook up to the phone, if you cannot hear or be heard, please set the mode on the switch block, try each of the line sequence "Channels" until you get clear sound from the headset
• [Specifications] Cable length: 159cm (5.2ft) in total (plug to switch block 77cm, switch block length 6.5cm, switch block to headset part 76cm), Plug type: RJ9 4-pin
• [Compatible Landline Phone Brands & Models] Alcatel 4020; Avaya 1408, 1608, 1608i, 1616, 9508, 9608, 9611G, 9620L, 9630G, 9640, 9641G, J169; BT Converse 2025, 2100, 2300, BT Paragon 650; Replacement for Cisco (CIS) 6911, 6941, 7821, 7841, 7911, 7940, 7941G, 7942, 7945, 7962, 7965; Delta 700; Grandstream GXP1620, GXP1630, GXP2130; Replacement for Mitel 5312, 5324, 5360, 6930, 8528; NEC DT300, DT400 series, DT800 series, DT900, SL2100; Nortel; Replacement for Panasonic KX-T Series, KX-T7730, KX-T7433, KX-TGF320e; Polycom VVX250, VVX300, VVX301, VVX410, VVX411, VVX450, VVX500, SoundPoint IP650, etc.
• [Other Compatible Telephone Brands & Models] Alphacom; Escene; Fanvil; Htek; Inter-Tel 8520; Interquartz; Lazerbuilt Prestige 905K; Replacement for Plantronics T10; ShoreTel IP230; SMT i6010; Replacement for Siemens Optipoint 410 Standard; Replacement for Samsung Officeserv DS5007s; Snom 300, 320, 370, 710, D120, D375, D715; Yealink T19P, T21P, T23G, T27G, T27P, T38G, T40G, T41P, T41S, T42G, T42S, T46S, T46U, T48S, T49, T54W, T219E2, etc.

Compatible desk phone IP telephone models: 3Com: 3102, 3103 Aastra: 53i, 55i, 57i, 57iCT, 390, 470, 480, 480e, 480i, 2465, 2564, 6737i, 6753i, 6755i, 6757i, 8004, 8009, 8314, 8324, 9009, 9112i, 9133i, 9143i, 9316cw, 9417cw, 9480i M4000, M4020, M5208, M5209, M5216, M5317, M7900, M8001, M8003, M9009, M9516 i2002, i2004, i2004IP (not compatible with i2400 phase II and i2004 POE) Akuvox: SP-R50P, SP-R52P, SP-R53P, SPR55P, SP-R59P, SP-R55G, SPR59G, SP-R63G, SP-R67G, VP-R47P, VP-R49G, R15P Alcatel-Lucent: 4004, 4010, 4018, 4019, 4020, 4022, 4035, 4037, Temporis 380, IP200, IP800 Alphacom AltiGen: 500, 510, 600, 705, 710, 720, IP805 Replacement for AGPTEK: HA0021, HA0098 Ascom: Berkshire 200, 400, 600, 800, SD30, MR30, MR51, MR61 Replacement for AT&T: CL2940, CL2940BK ATCOM: AT800, AT810, AT820, AT840, R1, R2, R3, R4 Replacement for Avaya, Lucent: 1220, 1230, 1408, 1416, 1608, 1608i, 1616, 2400, 2410, 2420, 4406D+, 4412D+, 4424D+, 4424LD+, 4610, 4620, 4621, 4622, 4624, 4625, 4626, 4630, 5410, 5420, 5601, 5602, 5610, 5620, 5621, 5625, 6210, 6211, 6218, 6219, 6220, 6221, 6402, 6402D, 6408, 6408+, 6408D+, 6410D+M, 6414, 6416, 6416D+M, 6424, 6424D+M, 8101, 8102, 8110, 8400, 8403, 8405, 8406, 8410, 8410D, 8434DX, 8503, 8510, 8520, 8528T, 9404, 9406, 9408, 9410, 9504, 9508, 9608, 9608G, 9611G, 9620, 9620L, 9621G, 9630, 9630G, 9640, 9640G, 9641G, 9650, 9650C, DT1, DT3, DT5, J139, J169, J179 AudioCodes: 420HD BT Converse 220, 225, 300, 320, 325, 420, 425, 1100, 1200, 1210, 1220, 1230, 1300, 1400, 2025, 2100, 2300, 2465, 2564 BT Paragon 450, 650, i2002, i2004 (not compatible with i2400 phase II and i2004 POE phones) NT8B20, NT8B30, NT8B40, NT8B50, NTZK23AA, AB (M2216), ACDI Cable & Wireless: CWB 100H, CWB 200H, CWB 500, CWB 600 Replacement for Cisco (CIS): 6000 series, 6821, 6841, 6851, 6911, 6921, 6941, 6945, 6961, 7800 series, 7821, 7841, 7861, 7902, 7905, 7905G, 7906, 7906G, 7910, 7910+SW, 7911, 7912, 7931, 7931G, 7940, 7940G, 7941, 7941G, 7942, 7942G, 7945, 7945G, 7960, 7960G, 7961, 7961G, 7962, 7962G, 7965, 7965G, 7970, 7970G, 7971, 7971G, 7972, 7975, 7975G, 7985G, 8000 series, 8811, 8841, 8845, 8851, 8861, 8865, 8941, 8945, 8961, 9900, 9951, 9971 Clarity: E814cc Comdial: 8312, 8412 Commander NT40: NT Economy, Standard, Advantage, Principle Delta: 700 Digium: D40, D50, D62, D70 Dlink: DPH-150S Doro/Audioline: AUB3MW, AUB6MW, AL505, Casino, Congress 100, 200, X50, Sim 200, Sensor 500, TEL15HS Ericsson-LG: LIP 8012D, 8024D, 8040L, 8501, 8515, 8540, 8815, 8820, 8830, 8840, Dialogue 4147, Dialogue 4186, MD110 Escene: CC800, GS292, GS330, ES205, ES206, ES220, ES280, ES282, ES290, ES310, ES320, ES330, ES410, ES620 ESI: 40sbp (need to program a button), 8-Key IP & Digital Feature Phone Fanvil: C01, C58, C58P, C62, C66, C68, X3/X3G, X5/X5G Replacement for Fujitsu phone Replacement for General Electric (GE): 2-9451, 2-9490 Gigaset: DE310, DE410, DE700IP, DE900IP Replacement for Grandstream: Budgetone 101, 102, GXP280, GXP285, GXP1200, GXP1400, GXP1405, GXP1450, GXP1610, GXP1615, GXP1620, GXP1625, GXP1628, GXP1630, GXP1760, GXP1780, GXP1782, GXP2000, GXP2010, GXP2020, GXP2100, GXP2110, GXP2120, GXP2124, GXP2130, GXP2135, GXP2140, GXP2160, GXP2170, GXP2200, GXV3005, GXV3006, GXV3175, GXV3240, GXV3275 Hanlong (Htek): UC802P, UC803P, UC804P, UC806P, UC840P, UC842, UC860P, UC862, UC902, UC903, UC913, UC923, UC924, UC926 Huawei: ET325, ET523, ET525, T685, 6805, 6810, 6830, 6850, 6870, 7810,7820, 7830, 7850, 7870, 7910, 7950 Hybrex: DK1-21, DK2-21, DK3-21 Inter-Tel: 8520, 8560, 8600, 8620, 8660, 8662, 8690, Encore ECX 1000, ECX 2000 Intecom: ITE 12SD Interquartz: Gemini 9330-AV, 9335 CLI, 9335-AV, Speakerphone, Enterprise Speakerphone, Enterprise Discovery, Interquartz 98380 Iwatsu: ETD-6D/K, ETD-8D/K, EDT-12D/K, ETD-24DF/F859, IX 12KTD-3, IX24KTD-3, Omega ZT-D Lazerbuilt: Prestige 905K, 906K, 907K Replacement for Mitel: 5000, 5010, 5020, 5040, 5055, 5140, 5201, 5205, 5207, 5210, 5212, 5215, 5220, 5224, 5230, 5235, 5240, 5250, 5312, 5320, 5320e, 5324, 5330, 5330e, 5340, 5360, 5550, 6930, 8528 SuperSet 401, 410, 420, 430, 700, 4001, 4015, 4025, 4120, 4125, 4150, 7000 NEC: Electra Elite DTerm Series E DPT-8, DPT-8D, DPT-16, DPT-16D, DPT-32, DPT-32D, DTH-8, DTH-8D, DTH-16, DTH-16D, DTH-32, DTH-32D, DTU-8, DTU-8D, DTU-16, DTU-32, DTU-32D, SL2100, ILV series; Dterm Series i, Series IP, DSX Series, ETJ Series, ETZ Series, DSX Phone, IP1WW-12TXH, IP4WW-12TXH-A-TEL, IP7WW-8IPLD-C1, IP2U-12TXD TEL2(WH), SN716; Aspire DT300 series, DT310, DT330, DT400 series, DT700, DT730, DT750, DT800 series, DT900, DSX, DTL, DTP, DTR Nortel Networks (Northern Telecom): 3903, 3904, 3905, Meridian / Norstar M7208, M7310, M7324, M7900, M9009, M9516, T7208, T7316, T7316E, Option M3110, 3310, 3820, PBX M3902, M3903, M3904, M3905, M2216, M2008, M2616, Packet 8: 6753i, 6755i, 6757i Obihai: OBi1062, OBi2182 Orchid: DBT 2000, DBT 3000 PLT: A100, S10, S11, S12, S50, SP-02, SP-04, SP-05, T10, T20, T50, T100, T110, PLX-400, PLX-500 Replacement for Panasonic: KX-HDV130,