Plantronics 38350-13 APC-43 Electronic Hook Switch Adapter, Black Go to amazon.com Related posts Top 16 best switches electronics 2022 FeatureIntended for: PhoneDesigned for: Cisco IP Phone 7821, 7841, 8845, 8861, 8865; unified IP Phone 6945 slimline, 6945 standard, 7942g, 7945g, 7962g, 7965g, 7975gProduct type: 6B5494/S17855187 DescriptionElectronic Hook Switch Cable for remote desk phone call control