... has a modular plug on the other end.You plug this modular plug into the ... Wireless: CWB 100H, CWB 200H, CWB 500, CWB 600 Comdial: 8312, 8412 Commander NT40: Commander NT Economy, ... Models 300, 500 (rev. 5 or later), 550, 600, 650 POLYCOM IP300, IP301, IP430, IP450, IP500, IP501, IP600 ... , Standard, Standard SL, & Advance& office Optipoint 600,Optipoint 600 Office OpenStage 40, 40TDM, 60, 60TDM, 80, ...