3 Definitions and abbreviations

32.2753GPPCharging managementMultiMedia Telephony (MMTel) chargingRelease 17Telecommunication managementTS

3.1 Definitions

For the purposes of the present document, the terms and definitions given in TR 21.905 [100], TS 32.240 [1] apply.

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

Bi Reference point for the CDR file transfer from the IMS CGF to the BD.

Ga Reference point for CDR transfer between a CDF and CGF.

Rf Offline Charging Reference Point between an IMS Network Entity or an AS and CDF.

Ro Online Charging Reference Point between an AS or MRFC and IMS-GWF and the OCS.

Nchf Service based interface exhibited by CHF.

For the purposes of the present document, the abbreviations defined in TR 21.905 [100], TS 32.240 [1] and the following apply:

3PCC Third Party Call Control

3PTY Three-Party

AoC Advice of Charge

CAT Customized Alerting Tone

CB Communication session Barring

CCBS Completion of Communication sessions to Busy Subscriber

CCNR Completion of Communications on No Reply

CD Communication Deflection

CDIV Communication DIVersion

CFB Communication Forwarding Busy

CFU Communication Forwarding Unconditional

CFNL Communication Forwarding on Not Logged-in

CFNR Communication Forwarding No Reply

CFNRc Communication Forwarding on Subscriber Not Reachable

CFUDB Communication Forwarding User Determined Busy

CONF CONFerence

CUG Closed User Group

CW Communication Waiting

ECT Explicit Communication Transfer

FA Flexible Alerting

HOLD Communication HOLD

ICB Incoming Communication Barring

MCID Malicious Communication Identification

MMTel MultiMedia Telephony

MWI Message Waiting Indication

NDUB Network Determined User Busy

OCB Outgoing Communication Barring

OIP Originating Identity Presentation

OIR Originating Identity Restriction

PNM Personal Network Management

CRS Customized Ringing Signal

TIP Terminating Identity Presentation

TIR Terminating Identity Restriction

URN Uniform Resource Name