What functions are included in the Online Charging System (OCS)?
Online Charging Function (OCF) and Account Balance Management Function (ABMF)
Charging Trigger Function (CTF) and Charging Data Function (CDF)
Charging Trigger Function (CTF) and Charging Gateway Function (CGF)
Session Based Charging Function (SBCF) and Event Based Charging Function (EBCF)
Charging Data Function (CDF) and Rating Function (RF)