AT&T System 25 - Manual (Page 285)

ABBREVIATIONS AND ACRONYMS
ABBREVIATIONS AND ACRONYMS
ADU
AE
ARS
ASCII
BPS
CCS
CCSA
COS
CSU
DCE
DDC
DDD
DID
DGC
DS1
DTAC
DTE
DTMF
DXS
EIA
ETU
FNPA
FRL
FX
HNPA
Asynchronous Data Unit
Account Executive
Automatic Route Selection
American Standard Code for Information Interchange
Bits Per Second
Hundred Call Seconds
Common Control Switching Arrangement
Class of Service
Customer Service Unit
Data Communications Equipment
Data Dial Code
Direct Distance Dialing
Direct Inward Dialing
Direct Group Call
Digital Signal Level 1
Direct Trunk Attendant Console
Data Terminal Equipment
Dual-Tone Multifrequency
Direct Extension Selector
Electronics Industries Association
Emergency Transfer Unit
Foreign Numbering Plan Area
Facility Restriction Level
Foreign Exchange
Home Numbering Plan Area
IROB In Range Out of Building
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