EtherHaul Operation, Administration and Maintenance Manual
Page 142
RF link
modulation
changed to the
specified
modulation
profile
In adaptive mode:
Modulation changed (up
or down) due to change in
link RF link conditions.
In static mode:
Modulation changed
manually or when link
changed state to up or
down.
Verify if modulation change is
due to rain fading, mis-
alignment or interference.
1) Improve antenna alignment
and verify clear line of sight.
2) Verify RF configuration.
3) Change channel to verify no
interference.
4) Replace ODU.
Extreme
temperature
condition (unit
temperature is
too high or too
low, exceeding
the configurable
thresholds)
Extreme temperature
condition.
1) Verify air-flow not
obstructed.
2) Verify ODU is installed in
temperature range according to
specs.
Unit temperature
returned to
normal
The unit temperature
condition returned to
normal.
Temperature returned to
normal, no corrective actions
needed.
SFP inserted to
one of the Line
Ethernet ports
User action: SFP was
inserted.
User action: No corrective
actions needed.
SFP extracted
from one of the
Line Ethernet
ports
User action: SFP was
extracted.
User action: No corrective
actions needed.
Interface
reference clock
changed its
Quality Level
Reference clock have
changed due to:
(eth1,eth2,eth3,eth4):
1) The previously-active
clock source in SyncE
configuration is down.
2) The active clock source
received SSM with
different quality level.
3) User action: change of
clock settings in SyncE
configuration.
Note that "ref-clock
change host ql-eec1"
event is part of the normal
startup of the system.
Verify reason for ref-clock
change (line disconnected, RF
link down…) and implement the
relevant corrective actions.
The SyncE
interface receives
SSMs with QL
1) Clock source of Host is
used.
2) Active clock source used
Verify reason for ref-clock
change (line disconnected, RF
link down…) and implement the