5.3.1 Basic principles

32.2743GPPCharging managementRelease 17Short Message Service (SMS) chargingTelecommunication managementTS

Tools: ARFCN - Frequency Conversion for 5G NR/LTE/UMTS/GSM

SMS online charging uses the Credit-Control application as specified in TS 32.299 [4].

SMS charging may use the Immediate Event Charging (IEC) principle or the Event Charging with Unit Reservation (ECUR) principle as specified in TS 32.299 [4]. The chargeable events for subscriber charging are associated with SM transactions.

An implementation may use either IEC or ECUR for charging events based on operator configuration.

The units used for quota shall be service specific and based on an SM.

The selection of the OCS is implementation specific as there is no guaranteed means of providing the OCS address to the CTF.

In addition, SMS charging may use the Refund Account principle when the operation has not been successfully completed after an IIEC.

NOTE: For SMSIP, the IP-SM-GW may receive information relevant for online charging through signalling in IMS.