Reference Manual

Glossary
DC Direct Current
DCC Digital Cross Connector
DCCH Dedicated Control CHannel
Dedicated control channels carry
signalling data.
DCCU DC Connection Unit
ddTMA Dual Duplex Tower Mounted Amplifier
This type needs only one combined TX/
RX feeder from the BTS to the TMA. ⇒
dTMA ⇒ rTMA ⇒ TMA ⇒ BTS
DF Distribution Frame
DFU Distribution and Fuse Unit
DIP DIgital Path
The name of the function used for
supervision of the connected PCM lines.
Dixie ASIC in the TRU
DM Degraded Minute
DM Distribution Module
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
EN/LZT 720 0008 P2A
2001-11-28
473 (485)
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Preliminary