Plantronics
  Plantronics Compatibility Guide for Headsets and Telephones (See  “Using the Compatibility Guide” on page 1) Back 32 Next a Headset must be plugged into headset port.   V-BAND SYSTEMS VK-6030, 6060, 6090 M1 VK6120, 6150 Valent 10, 20, 30 M5 VIAX Desk Phone VIAX Console: VK-7030 to VK-70240 (30 Button Increments) VALCOM V4500, V4600 J1, M1 VIKING 308/715 KT8 M1 VOAD SYSTEMS Keyboard Phone M1 VODAVI TECHNOLOGY Starplus 2500, 4500 J1, M1 Starplus: 2501, 2554 M1 2601, 2602, 2603 M5 2604, 2605, 2606 308, 612, 616, 816, 1224, 2448, 4080 Proprietary Sets 1648, 3264 Proprietary Sets M1 1428, 2856 Digital Sets M5 WALKER Clarity M5 WANG INDUSTRIES WI05 SL 2500 M1 Digital Work Station WEBCOR ELECTRONICS, INC. 708, 711, 718 (1 line) NO 720, 721, 722, 737, 739 740, 757, 759, 767, 768 780, 787, 790, 797 818, 1000, 1001, 1050 828, 830 (2 line) M5 758, 808, 810 (2 line) NO 1100, 2001 (2 line) Key PBX/SPC 7832, 7387 WESCOM 580 Console J1, M1 80/5 ACD Console P10 WESTERN ELECTRIC (WECO) SEE AT&T WIN COMMUNICATIONS CORP. Reliant 8, 16, 32, 50, 96 M1 Reliant Displayphone NO Poets (Response): 612, 1836, 3060,Exec a M5 Marathon EKT DSS/BLF Console M5 100-D, 200-D Console 16D, MK1000 a On-hook dialing can be achieved by installing a S.P.S.T. switch across terminals TLO and TLI of the phone's printed circuit board WINDSOR T1500, T3019 NO WOLVERINE Series 4000, A (4 line) M5 Series 4000+, A+ (4 line) Series 5000 (4 line) Dial in Handset:    Series 6000 (4 line) NO WYSE Terminal 60 (08030) M5 XTEL Perfect 10 M1 Status ZAISAN, INC. ES.1, ES.2 M1