List of Abbreviations
A
AA → Automated Attendant
ANI → Automatic Number Identification
APT → Analog Proprietary Telephone
ARS → Automatic Route Selection
B
BGM → Background Music
C
CLI → Calling Line Identification
COS → Class of Service
CPC → Calling Party Control
CS → Cell Station
D
DIL → Direct In Line
DISA → Direct Inward System Access
DND → Do Not Disturb
DSS → Direct Station Selection
DTMF → Dual Tone Multi-Frequency
E
EFA → External Feature Access
F
FWD → Call Forwarding
G
G-CO → Group-CO
I
ICD → Incoming Call Distribution
IRNA → Intercept Routing—No Answer
L
L-CO → Loop-CO
LCS → Live Call Screening
LED → Light Emitting Diode
O
OGM → Outgoing Message
Feature Manual
5