User`s manual

Chapter 4 Monitoring and Maintenance
82
Message Description Corrective Actions Type Class
STM1_TU_AIS Tributary unit AIS Check the higher layer
alarms
Alarm Major
STM1_TU_LOP Loss of pointer Check Cross Connect
setting of FAR END
Alarm Major
STM1_HP_LOM Loss of
multi-frames
Informative alert Alarm Major
STM1_HP_PLM HO path payload
label mismatch
Check the received C2
byte
Alarm Minor
STM1_LP_UNEQ LO path
unequipped
Check the signal label
of received V5 byte
Alarm Minor
STM1_LP_TIM LO path trace
identifier
mismatch
Check LO path
Received trace identifier
and Expected trace
identifier setting
Alarm Minor
STM1_LP_PLM LO path payload
label mismatch
Check the received C2
byte
Alarm Minor
STM1_LP_RDI LO path remote
defect indication
Check LO path alarm of
FAR END
Alarm Minor
GFP_CH_ID_mis
match
Channel ID
mismatch for
primary VCG
within GFP MUX
Check Channel ID
setting for primary VCG
within GFP MUX
Warning
RX_LCAS_CRC_
error
Received CRC
error in LCAS
mode
Informative alert Warning
RX_LAPS_Frame
_mismatch
Received Frame
mismatch for
LAPS
Encapsulation
Check Encapsulation
setting for VCG#
Alarm Minor
GFP_loss_of_syn
c
loss of sync for
GFP
Encapsulation
Check Encapsulation
setting for VCG#
Alarm Major
Diff_delay_exceed
s_Max
Differential delay
exceeding the
Maximum (loss of
alignment)
Informative alert Warning
VCG_VC_LP_LO Loss Of Informative alert Alarm Major