Pairing, communication sys-
tem in helmet 1 with com-
munication system in helmet
2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Pairing, navigation system
with communication system
in helmet 1 . . . . . . . . . . . . . . . . . . 60
Pairing, navigation system
with mobile phone 1 . . . . . . . . 62
Pairing, communication sys-
tem in helmet 2 with mobile
phone 2 . . . . . . . . . . . . . . . . . . . . . 63