data[0] = lastcsw -> state of the committed switch
data[1] = lastucsw -> state of the uncommitted switch
data[2] = lastToneburst -> current state of toneburst switch
data[0] = lastcsw -> state of the committed switch
data[1] = lastucsw -> state of the uncommitted switch
data[2] = lastToneburst -> current state of toneburst switch