AT&T System 25 - Manual (Page 286)

ABBREVIATIONS AND ACRONYMS
L D N Listed Directory Number
L E D Light-Emitting Diode
MET Multibutton Electronic Telephone
M O H Music-on-Hold
N A U Network Access Unit
NEU Network Extension Unit
NPA Number Plan Area
O P S Off-Premises Station
P D C Personal Dial Code
P D S Premises Distribution System
R A M Random Access Memory
R N X Private Network Office Code
R O M Read Only Memory
S A T System Administration Terminal
S I P Station Interconnect Panel
S L A C Switched Loop Attendant Console
S M D R Station Message Detail Recording
T A E Trunk Access Equipment
T C Technical Consultant
V T Voice Terminal
W A T S Wide Area Telecommunications Service
6-2