1.3 Acronyms

An alphabetized list of acronyms or terms used in this document.

Table 1-1 Acronyms/Terms

Acronym/Term	Definition
API	Application Program Interface
ART	Application Routing Table
CCA	Credit Control Answer
CCA-I/E	Credit Control Answer (Initial/Event)
CCR	Credit Control Request
CCR-I/E	Credit Control Request (Initial/Event)
CTF	Charging Triggering Function
DCA	Diameter Custom Application
DET	Zero Balance Detection Interval (configured)
DRA	Diameter Routing Agent
DSR	Diameter Signaling Router
ECC	Extended Command Code
GUI	Graphic User Interface
MEALS	Measurements, Events, Alarms, and Logs
MMI	Machine to Machine Interface
MP	Measurement Platform
OC-DRA	Online Charging DRA
OCS	Online Charging Server
PCEF	Policy and Charging Enforcement Function
SO	System Options
UDR	Unified Data Repository
ZBA	Zero Balance Application
ZBC	Zero Balance Counter
ZB-DB	Zero Balance Application Database
ZBT	Zero Balance Blocking Timer
ZDT	Zero Balance Detection Timer