Clearing:
Trouble
363-206-295
TAP-
121
6
of
5
Page
1997
December
1,
Issue
Is
21.
FAULT
flashing?
or
lighted
LED
If FLASHING
with
continue
then
,
22
Step
.
If LIGHTED
do
then
,
TAP-106.
Replace
22.
OLIU
(
far-end
at
363-206-285, DLP-523
not
does
trouble
If
).
fiber.
optical
incoming
in
is
trouble
clear,
23.
PROCEDURE.
THIS
COMPLETED
HAVE
YOU
STOP.
24.
NOTE:
is
request
switching
protection
line
OC-3
that
Remember
lighted
a
have
to
possible
is
It
unidirectional.
FAULT
an
on
LED
OLIU
that
have
still
and
OLIU
failed,
transmitter
if
example,
(for
active
or
lighted
analyze
to
necessary
is
It
receiving).
be
still
could
receiver
flashing OLIU
an
replacing
before
LEDs
OLIU If
.
ACTIVE
is
LED
an
on
lighted
OLIU
or
transmitting
either
(ACTIVE)
service
in
is
it
,
a
perform
to
necessary
be
may
It
both.
or
receiving
switch-line
at
same
to
receive
and
transmit
both
switch
to
end
far
at
and
end
near
line.
Is FAULT
service
on
only
flashing
or
lighted
LED
OLIU
on
only
or
s
protection OLIUs?
If YES
with
continue
then
,
25
Step
.
If NO
to
proceed
then
,
32
Step
.
Is
25.
ACTIVE
on
lighted
LED
OLIU
lighted
with
s
FAULT LEDs?
If YES
with
continue
then
,
26
Step
.
If NO
to
proceed
then
,
27
Step
.
and
CIT
Use
26.
rtrv-state
ends
both
at
status
switch
check
to
command
and
CIT
Use
system.
of
switch-line
and
switch
reset
to
command
to
lines
far-end
and
near-
both
switch
OLIU
lighted
without
s
FAULT LED.