This TS describes the supplementary services belonging to the group "Charging Supplementary Services". Charging services are the supplementary services associated with charging aspects. This group comprises two services:
Advice of Charge (Information) (AoCI)
Advice of Charge (Charging) (AoCC)
AoC supplementary services will use the Charge Advice Information described in TS 22.024
In principle, the same type of Mobile Station (MS) can be used for both services of Advice of Charge (AoC), except where the application demands special features - e.g. the payment mechanism in a payphone. Only one of these services may be subscribed to at any one time.