Other: What is the pinout for the CC-300/400 headset?
See attached for color codes.Pin 1 = Microphone (-)
Pin 2 = Microphone (+)
Pin 3 = Listen; common for both (-)
Pin 4 = Listen LEFT (+)
Pin 5 = Listen RIGHT (+)
CC-300/400 datasheet : https://clearcom.com/DownloadCenter/datasheets/Headsets/CC-300andCC-400_Headset_Datasheet.pdf