User Manual

RBS 2000 Glossary
TN O&M
Transport Network Operation and Maintenance (in
general)
TRA
Transcoder Rate Adapter
The TRA Unit (TRAU) in BSC performs transcoding
of speech information and rate adaptation of data
information.
TRS
Transceiver System
TRU
Transceiver Unit
TRX
Transceiver (combined transmitter and receiver)
TRXC
Transceiver Controller
TS
Time Slot
A 0.577 ms period (TDMA frame subunit) corresponding
to 156.25 raw bits of information. The eight time slots of
each TDMA frame are numbered 0...7.
TT Total Time
TU
Timing Unit
TX
Transmitter
TXA Transmitter Antenna A
TXB Transmitter Antenna B
TXBP Transmitter BandPass filter
TXU
Radio Transmitter Unit
UAS
Unavailable Seconds
UAST
UnAvailable STate supervision
UL Underwriter Laboratories
uplink Signalling direction from the MS to the system.
UPS
Uninterrupted Power Supply
VCO
Voltage Controlled Oscillator
VSWR
Voltage Standing Wave Ratio RF signal measure. The
quotient between transmitted and reflected voltage.
21 (22)
EN/LZT 720 0283 Uen R2A