Document Title Security Level
2006-10-04 HUAWEI Confidential Page31, Total35
Lm half rate traffic channel
LNA Low Noise Amplifier
M
MCK Main Clock board
MM Mobility Management
MMI Man Machine Interface
MS: Mobile Station
MSC Mobile services Switching Centre, Mobile Switching Centre
MSISDN Mobile Station international ISDN number
MTBF Mean Time Between Failures
O
O&M, OM Operations & Maintenance centre
OMC Operations & Maintenance centre
OML Operations & Maintenance Link
OSI Open System Interconnection
P
PAT Passive Transmission board
PBT Power Boost Technology
PBU Power Boost Unit
PCH Paging Channel
PH Physical (layer)
PLMN: Public Land Mobile Network
PMU Power Monitor Unit
PON Passive Optical Network
PP Point-to-Point protocol
PSTN Public Switched Telephone Network
PSU Power Supply Unit
R
RACH Random Access Channel
RET Remote Electric Tilt
RF Radio Frequency
RR Radio Resource management
RSL Radio Signaling Link
RXLEV Received signal level
RXQUAL Received signal Quality
S
SACCH Slow Associated Control Channel
SACCH/C4 Slow Associated Control Channel/SDCCH/4