User guide

Abbreviations
ABB-2 Issue 1 September 1995
D
DAC
Dial Access Code
DC
Direct Current
DCIU
Data Communications Interface Unit
DCP
Digital Communications Protocol
DCS
Distributed Communications System
DD
Disconnect Detect
DDD
Direct Distance Dialing
DID
Direct Inward Dialing
DIO
DSP Input/Output Controller
DIOD
Direct Inward/Outward Dialing
DLG
Dual Language Greetings
DM
Database Manager
DMA
Direct Memory Access
DOSS
Delivery Operations Support System
DP
Digital Port
DPE
Digital Port Emulation
DPC
DSP Parallel Interface Controller
DRAM
Dynamic Random Access Memory
DS
Display Set Integration
DS1
Digital Service 1
DSI
Digital Service Interface
DSIC
Dedicated Switch Installation Crew
DSP
Digital Signal Processor
DTE
Data Terminal Equipment
DTMF
Dual Tone Multifrequency
DUSCC
Dual Synchronous Channel Chip
E
EDT
Equipped Device Table
EIA
Electronic Industries Association
EMI
Electro-magnetic Interference
EPROM
Electrically Programmable Read Only Memory
ER
Error Manager
ES
Enhanced Services
ESS
Electronic Switching System
F
FAC
Faceplate and Alarm Controller
FC
Forms Control