Instruction manual

ABBREVIATIONS AND ACRONYMS
CDR
CDRR
CDRU
CEM
Cl
CMDR
CMS
CO
COR
COS
CPE
CPN/BN
CPS
CPTR
CRC
CSA
CSD
CSM
CSS
CSU
DC
DCE
DCP
DCS
DDC
DDD
DID
DIOD
DLC
DLDM
DMI
DND
DNIS
DOD
DOSS
DS1
DS1
DSU
DTDM
DTE
DTGS
DTMF
DXS
E&M
EBCDIC
El
EIA
EMI
Call Detail Recording
Call Detail Recording and Reporting
Call Detail Recording Utility
Channel Expansion Multiplex
Clock Input
Centralized Message Detail Recorder
Call Management System
Central Office
Class of Restriction
Class of Service
Customer Premises Equipment
Calling Party Number/Billing Number
Characters Per Second
Call Progress Tone Receiver
Cyclical Redundancy Checking
Canadian Safety Association
Customer Service Document
Centralized System Management
Center Stage Switch
Channel Service Unit
Direct Current
Data Communications Equipment
Digital Communications Protocol
Distributed Communications System
Direct Department Calling
Direct Distance Dialing
Direct Inward Dialing
Direct Inward/Outward Dialing
Data Line Circuit
Data Line Data Module
Digital Multiplexed Interface
Do Not Disturb
Dialed Number Identification Service
Direct Outward Dialing
Delivery Operations Support System
Data Services Level 1
Digital Service Interface
Data Service Unit
Digital Terminal Data Module
Data Terminal Equipment
Direct Trunk Group Select
Dual Tone Multifrequency
Direct Extension Selection
Ear and Mouth (Receive and Transmit)
Extended Binary Coded Decimal Interexchange Code
Expansion Interface
Electronic Industries Association
Electro-Magnetic Interference
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