Manual Part 7
RBS 2000 Glossary
DM Distribution Module
DM Micro = Differential Mode
DMRU
Distributed Main Replaceable Unit
If a Main RU is subordinated to the CMRU, it is said to
be distributed.
downlink
Signalling direction from the system to the MS.
DP
Digital Path
DP
Distribution Panel
DPX
Duplexer
DS1
Digital Signal level 1 (1544 kbit/s)
DSP
Digital Signal Processor
DT Data Transcript
DTE Data Terminal Equipment
DTF Distance To Fault
dTMA
duplex TMA
dTMA is similar to the old ALNA except for different
characteristics. ⇒ ddTMA ⇒ rTMA ⇒ TMA
dTRU
double TRansceiver Unit
DU
Distribution Unit (RU in CDU-D)
DUT
Device Under Test
DX
Direct Exchange
DXB Distribution Switch Board
DXC
Digital Cross Connector
DXU
Distribution Switch Unit
DXX
Ericsson Cellular Transmission System including NMS
E1
Transmission standard, G.703, a 2048 kbit/s PCM link
E-GSM
Extended GSM
9 (24)
EN/LZT 720 0283 Uen R1B