3 Definitions, symbols and abbreviations

32.2913GPP5G system, charging serviceCharging managementRelease 17Stage 3Telecommunication managementTS

3.1 Definitions

For the purposes of the present document, the terms and definitions given in 3GPP TR 21.905 [1] and the following apply. A term defined in the present document takes precedence over the definition of the same term, if any, in 3GPP TR 21.905 [100].

3.2 Symbols

For the purposes of the present document, the following symbols apply:

Nchf Service based interface exhibited by CHF.

3.3 Abbreviations

For the purposes of the present document, the abbreviations given in 3GPP TR 21.905 [1] and the following apply. An abbreviation defined in the present document takes precedence over the definition of the same abbreviation, if any, in 3GPP TR 21.905 [1].

AF Application Function

AMF Access and Mobility Management Function

ATSSS Access Traffic Steering, Switching, Splitting

CHF Charging Function

CEF Charging Enablement Function

CTF Charging Trigger Function

GPSI Generic Public Subscription Identifier

GUAMI Globally Unique AMF Identifier

I-SMF Intermediate SMF

MnS Management Service

NF Network Function

PEI Permanent Equipment Identifier

QBC QoS flow Based Charging

QFI QoS Flow Identifier

SMSF Short Message Service Function

SMF Session Management Function

SSC Session and Service Continuity

SUPI Subscription Permanent Identifier