Panasonic KX-TD500 System Reference Manual page 1573

A
AGC Automatic Gain Control
ARS Automatic Route Selection
ATT Attendant Console
ATLC Attendant Console Line Circuit
B
BGM Background Music
BLF Busy Lamp Field
BSS Busy Station Signaling
C
CHG Change
CO Central Office
COL Central Office Line
CONF Conference
COS Class of Service
COT Central Office Trunk
CPC Calling Party Control
CPU Central Processing Unit
D
DES Destination
DID Direct Inward Dialing
DIL Direct In Lines
DISA Direct Inward System Access
DN Directory Number
DND Do Not Disturb
DP Dial Pulse
DPH Doorphone Circuit
DPIS Digital Proprietary Integrated
Telephone System
DSS Direct Station Selection
DTMF Dual-Tone Multifrequency
E
EFA External Feature Access
EXT Extension
F
FDN Floating Directory Number
FWD Call Forwarding
G
GCO Group CO
GCOT Ground Start Central Office Trunk
Abbreviations
H
HLC
I
ICM
INS
IRNA
L
LCD
LCOT
LED
LNR
M
MOD
MODEM
MSG
MW
O
OCC
OFDN
OGM
OHCA
OPX
OUS
P
PB
PBX
PCO
PDN
PF
PITS
PLC
R
RMT
RST
19-1
Hybrid Line Circuit
Intercom
In Service
Intercept Routing-No Answer
Liquid Crystal Display
Loop Start Central Office Trunk
Light Emitting Diode
Last Number Redial
Modification
Modulator and Demodulator Unit
Message
Message Waiting
Other Common Carrier
Overflow Directory Number
Outgoing Message
Off-Hook Call Announcement
Off Premise Extension
Out of Service
Push Button
Private Branch Exchange
Private CO
Primary Directory Number
Programmable Feature
Proprietary Integrated Telephone
System
Proprietary Integrated Telephone
System Line Circuit
Remote Circuit
Restart