Simple plug and play connection. Plug the male end of the Mic mute PTT into the extension cord of the headset. Plug the female end of the Mic Mute PTT into the headset and done. When the mic mute is plugged in it will keep the mic muted on that headset only. To activate the mic simply press and hold the Mic Mute button to activate the mic and talk.
Note: the Mic Mute Button does not disable the VOX setting on the intercom. So if the mic is activated while pressing the button the person talking will still have to overcome the VOX threshold to active the mic as well.