µSDM-1RD / µSDM-1 / µSDM-1E IOM
Glossary
426006-2304-013-B1
Lightscape Networks Ltd. Proprietary
F-3
POH
Path Overhead
POWERFLT
Power Fault
PPI
Plesiochronous Physical Interface in SDH equipment
PPM
Parts per Million
PRBS
Pseudo Random Bit Sequence
PROCFLT
Processor Fault
PSL
Path Signal Label (mismatch alarm)
QDCC
Q Interface Data Communication Channel
RAI
Remote Alarm Indication
RAP
Rack Alarm Panel
RDI
Remote Defect Indicator (upstream alarm)
REI
Remote Error Indication
RS
Regenerator Section
Rx
Receive
RXCLKDV
Receive Clock Deviation
SD
Signal Degradation (alarm)
SDH
Synchronous Digital Hierarchy
SDM-1
Lightscape Networks STM-1 Synchronous Digital
Multiplexer
SDM-4
Lightscape Networks STM-4 Synchronous Digital
Multiplexer
SDM-16
Lightscape Networks STM-16 Synchronous Digital
Multiplexer
SDR
SDH Regenerator
SES
Severely Errored Seconds
SESFE
Severely Errored Seconds, Far End
SESNE
Severely Errored Seconds, Near End
SMT
Synchronous Multiplexing Terminal
SOH
Section Overhead
SPI
SDH Physical Interface
STM
Synchronous Transfer Module
STM-1
Synchronous Transport Module, 155.52 Mbit/s
STM-4
Synchronous Transport Module, 622 Mbit/s
STM-16
Synchronous Transport Module, 2.488 Gbit/s
SU
Super User