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Chapter 4 Troubleshooting and Diagnostics IPmux-1/1E Installation and Operation Manual
4-2 Error Detection
Table 4-1. Event Types
Event Description Corrective Action
COLD_START The IPmux-1/1E has been powered up None
PWR_ACTIVE IPmux-1/1E power supply unit is
powered on
None
FATAL ERR IPmux-1/1E has encountered an
internal fatal error
The IPmux-1 requires servicing
SYS USER RESET IPmux-1/1E was reset by the user None
LOS START IPmux-1 has a LOS (loss of signal) state
on its E1/T1 port
1. Check the port cable connection
2. Check input signal
LOS END The LOS state detected has ended
LOF START IPmux-1 has a LOF (Loss of frame
synchronization) state on its E1/T1 port
1. Check port cable connection
2. Check input signal
LOF END The LOF state detected has ended None
LINE AIS START IPmux-1 has AIS (alarm indicator signal)
state on its E1/T1 port
Check for a fault at the PDH network, on the
receive direction
LINE AIS END The line AIS state detected has ended None
LINE RDI START IPmux-1 has LINE RDI (remote defect
indicator) state on its E1/T1 port
Check for a fault at the E1/T1 connectivity
on the transmit direction
LINE RDI END The LINE RDI state detected has ended None
LINE FEBE START IPmux-1 has LINE FEBE state on its
E1/T1 port
Check for errors in the E1/T1 connection on
the transmit direction
LINE FEBE END The LINE FEBE state detected has
ended
None
REMOTE FAIL START Ethernet frames are not received by the
remote IPmux-1 on the specified
connection
Check Eth/IP path
REMOTE FAIL END Remote fail state has ended None
LOCAL FAIL START Ethernet frames are not received by the
local IPmux-1 on the specified
connection
Check Eth/IP path
LOCAL FAIL END Local fail state has ended None
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