RTRV-ALM
17
of
11
Page
RTRV-ALM
Description
Report
Description
Report
(Contd)
Descriptions
RTRV-ALM
11-3.
Table
Meaning
Description
(LOF)
loss-of-frame
a
detected
has
system
The
defined
is
LOF
signal.
OC-12
incoming
an
in
condition
consecutive
(four
condition
(OOF)
out-of-frame
an
as
3
least
at
for
lasts
that
patterns)
framing
STS-1
errored
milliseconds.
end,
near
the
at
CP
OLIU
the
of
Failure
causes:
Likely
the
of
failure
or
end,
far
the
at
CP
OLIU
the
of
failure
fiber.
receive
LOF
OC12
inc.
(LOS)
loss-of-signal
a
detected
has
system
The
line.
OC-12
the
on
condition
end,
near
at
CP
OLIU
the
of
Failure
causes:
Likely
receive
the
of
failure
or
end,
far
at
CP
OLIU
the
of
failure
fiber.
LOS
OC12
inc.
line
OC-12
specified
the
in
(BER)
ratio
error
bit
The
(10
threshold
error
soft
provisioned
the
exceeds
−
9
to
10
−
5
10
of
threshold
error
hard
the
below
is
but
)
−
3
.
end,
near
the
at
CP
OLIU
the
of
Failure
causes:
Likely
the
of
failure
end,
far
the
at
CP
OLIU
the
of
failure
it
when
used
being
is
attenuator
optical
or
fiber,
receive
be.
should
it
when
used
being
not
is
or
be,
not
should
(BER)
degrade
sig.
OC12
inc.
signal
OC-12
received
the
in
(BER)
ratio
error
bit
The
10
exceeds
−
3
.
end,
near
the
at
CP
OLIU
the
of
Failure
causes:
Likely
at
CP
OLIU
the
of
failure
or
fiber,
receive
the
of
failure
end.
far
the
(BER)
failed
sig.
OC12
inc.
receive
end
far
OC-3
the
detected
has
system
The
signal.
OC-3
incoming
the
in
signal
(FERF)
failure
incoming
an
detected
has
end
far
The
causes:
Likely
be
may
This
line.
OC-3
specified
the
on
failure
signal
the
end,
near
the
at
CP
OLIU
the
of
failure
by
caused
the
on
fiber
transmit
the
or
end,
far
the
at
CP
OLIU
line.
specified
FERF
OC3
inc.
11-366
1997
December
1
Issue
OC-12
DDM-2000