DLP-
543
363-206-295
1997
December
1,
Issue
6
of
2
Page
near-end
the
at
loopback
fiber
the
performed,
being
are
tests
local
If
3.
23G-U
OLIUs
MAIN
1.)
(Figure
place
in
be
must
the
at
performed,
being
are
tests
end-to-end
service
transport
STS-3c
If
OC-12
DDM-2000
the
with
associated
cross-connection
LGX
far-end
the
from
cord
patch
a
connect
tested,
being
Multiplexer
OUT
the
to
jack
IN
associated
cross-connection
the
At
tested.
be
to
signal
OC-3c
the
for
jack
SONET
the
connect
(CO),
Multiplexer
OC-12
DDM-2000
near-end
the
with
the
to
set
test
IN and OUT
test.
under
circuit
the
with
associated
jacks
are
tests
end-to-end
ring
virtual
ATM
or
service
video
broadcast
STS-3c
If
each
and
CO
the
at
connected
be
must
sets
test
SONET
performed,
being
signals
drop
The
respectively.
3,
Figure
or
2
Figure
in
shown
as
node
RT
monitored.
be
may
CO
the
at
signal
return
the
and
RT
each
at
transmission.
error-free
for
test
to
set
test
SONET
the
Use
4.
free)?
(error
successful
test
the
Was
5.
If YES
with
continue
then
,
6
Step .
If NO
to
proceed
then
,
16
Step
.
tested?
being
service
ATM
or
broadcast
video
Is
6.
If YES
to
proceed
then
,
14
Step
.
If NO
with
continue
then
,
7
Step .
protection
Is
7.
OLIU
tested?
being
slot
unit
function
in
installed
pack
circuit
If YES
with
continue
then
,
8
Step .
If NO
to
proceed
then
,
12
Step
.
service
the
Unseat
8.
21G/21G-U/21G2-U or
OLIU
21D/21D-U
pack
circuit
test.
under
circuit
the
with
associated
set.
test
SONET
the
with
test
transmission
OC-3c
the
Repeat
9.
free)?
(error
successful
test
the
Was
10.
If YES
with
continue
then
,
11
Step
.
If NO
to
proceed
then
,
16
Step
.