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AS4000 Subscriber Terminal
Installation and Commissioning
IXL 001
605-0000-454
Draft Issue 1.3 Date 8/02/00
Page 8 of 10
Abbreviations
ADPCM Adaptive Differential Pulse Code Modulation
AC
Access Concentrator
AGC
Automatic Gain Control
CCC
Call Control Channel
CDMA
Code Division Multiple Access
CPE
Customer Premises Equipment
CRU
Customer Radio Unit
CU
Compression Unit
CT
Central Terminal
CTU
Central terminal Tributary Unit (at AC site)
DA
Demand assignment
DC
Direct Current
DMM
Digital Multi Meter
DRS
Digital Radio System
DTU
Demand Assignment Tributary Unit
FA
Fixed Assignment
ISDN
Integrated Services Digital Network
ITU-T
International Telecommunications Union –Telecommunications
LAC
Link Acquisition Channel
LD
Loop Disconnect
MF
Multi-Frequency
MU
Modular Unit (ST)
NTU
Network Termination Unit
PC
Power Control
PCM
Pulse Code Modulation
PSU
Power Supply Unit
PTC
Priority Traffic Channels
RF
Radio Frequency
RU
Residential Unit (ST)
SC
Shelf Controller
SIU
Service Interface Unit
ST
Subscriber Terminal
SU
Sub Unit (ST)
Rx
Receive
Tx
Transmit
TDM
Time Division Multiple Access
TCH
Traffic Channels
TU
Tributary Unit
VDU
Video Display Unit
VF
Voice Frequency
XTU
Switch Tributary Unit