EtherHaul Operation, Administration and Maintenance Manual
Page 144
ERP Forced Switch
ERP Forced Switch
notification on
local or remote
(any remote unit
in the ring) with
indication if CW
or ACW ports are
blocked (not
sending traffic) or
unblocked
(sending traffic)
User action: Forced Switch
ERP Manual Switch
ERP Manual
Switch
notification on
local or remote
(any remote unit
in the ring) with
indication if CW
or ACW ports are
blocked (not
sending traffic) or
unblocked
(sending traffic)
User action: Manual
Switch
ERP Signal Fail
ERP Signal Fail
notification on
local or remote
(any remote unit
in the ring) with
indication if CW
or ACW ports are
blocked (not
sending traffic) or
unblocked
(sending traffic)
1) ERP config mismatch or
wrong configuration
2) Disconnection in the
ring, sending alarm
1) Verify ERP configuration and
RAPS continuity.
2) Verify reason for signal fail
state (line disconnected, RF link
down…) and implement the
relevant corrective actions.
ERP Invalid version
ERP different
versions (ERP V1
or V2)
notification.
One of the elements in the
ring has different ERP
version.
Verify same version is used
CINR Out Of Range
CINR dropped
below configured
CINR threshold.
CINR drop (below
configured threshold) due
to change in RF link
conditions.
Verify if CINR drop is due to rain
fading, mis-alignment or
interference and if threshold
was not set too close to the
nominal operation values.
1) Improve antenna alignment
and verify clear line of sight.
2) Verify RF configuration.
3) Change channel to verify no
interference.
4) Replace ODU.
