Pairing with the PELTOR WS ProTac XP headset (MT15H7*WS5**) does not work. According to the manufacturer, it complies with A2DP 1.2 for Bluetooth. The pairing mode does not work as described in the manual=button pressed wait until alternately red then blue flashes. First blue flashes slowly and then quickly; then red lights up for about 1 second and instead of alternating red and blue, red and blue light up together until red lights up again and then blue flashes! The headset is first switched on and very close. Who knows what to do?