ienza Replacement RJ Plug to 3.5mm Headset Adapter for Cisco IP Phone (Works with Cisco IP Phone 7931 7940 7960 7970 7962 7975 7961 7971 7960 M12 M22) This adapter cable will allow you to conveniently use your iPhone, Smartphone, PS4, Xbox One or PC Headset with 3.5mm 4 Pole Plug on your Cisco IP Phone. The RJ Plug of this adapter cable should be connected to RJ Port with a Headphone sign of your Cisco IP Phone (see one of the product pictures) 3.5mm Female to RJ Plug ienza is a registered trademark. Use of the ienza trademark without the prior written consent of ienza, LLC. may constitute trademark infringement and unfair competition in violation of federal and state laws.