User Manual

Demand Assignment
System Overview IXL 001
605-0000-450
Draft Issue 1.3dr Date 8/02/00
Page 4 of 6
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