One of the intercoms has a problem transmitting via bluetooth. So it is Bluetooth 3.0. It can pair with another of our Sena SMH10B but is unable to transmit any voice by VOX. It can receive voice by VOX no problem. I have tried updating firmware, both at the current level 5.1.2, factory reset, played around with the VOX settings, swapped speaker/mic units but no result. Tested it with pairing the phone and making a call to myself. Audio works but once again the mic or voice by VOX failed as no voicemail recorded.
What to do?
What to do?