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Glossary
Logical RU
LOS
LVD
LVF
MAC
MADT
Magazine
Main RU
MCB
MHS
MMI
MO
MR
MRT
MS
MSC
MSTP
MTBF
478 (485)
CCHs Control CHannels, for control
signalling.
⇒ Physical Channel ⇒ Channel
Combination
A unit which can be referred to, but is not
a single physical unit. There are three
different kinds of logical RUs:
1. Buses
2. Antennas
3. Environment
Loss Of Signal
Low Voltage Directive
Low Voltage Filter
Medium Access Controller
Mean Accumulated DownTime
A magazine is a reserved space in the
cabinet, which may hold one or more RUs.
A main replaceable unit is a replaceable
unit that contains one or more processors,
to which software can be downloaded
from the BSC.
MultiCasting Box
Modification Handling System
Ericsson trouble report database
Man-Machine Interface
Managed Object
Measurement Receiver
Mean Repair Time
Mobile Station
Mobile services Switching Centre
GSM network unit for switching, routing
and controlling calls to and from the
Public Switched Telephone Network
(PSTN) and other networks.
Mobile Station Test Point
Mean Time Between Failure
© Ericsson Radio Systems AB
— All Rights Reserved —
EN/LZT 720 0008
P2A
2001-11-28
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