DLP-
518
363-206-295
1997
December
1,
Issue
27
of
4
Page
TGS
BBF2
8.
!
CAUTION:
TGS
BBF2
and
TGS
BBF2B
/
TG3
BBF4
settings
switch
mode
timing
carefully.
settings
switch
Check
same.
the
set
not
are
1:
NOTE
is
system
the
before
checked
be
should
nodes
all
of
mode
timing
The
to
system
the
cause
may
modes
timing
Improper
service.
in
placed
all
if
example,
(for
interruption
service
a
cause
or
unpredictably
act
mode).
timed
line
to
set
are
nodes
2:
NOTE
The
TGS
BBF2
as
provisioned
be
may
mode
timing
Running
Free
,
External
DS1
or
,
Timed
Line
the
mode,
free-running
In
.
TGS
BBF2
the
on
oscillator
an
from
timing
gets
TGS
BBF2
timing,
external
In
.
the
TGS
BBF2
In
input.
reference
DS1
external
an
from
timing
gets
the
timing,
line
TGS
BBF2
an
from
timing
gets
OLIU
reference
a
from
Free-
signal.
rate
line
OC-12
received
the
from
recovered
clock
default.
factory
the
is
running
3:
NOTE
be
can
which
topologies
timing
possible
the
all
depicts
B
Table
comments
some
with
(NE)
elements
network
adjacent
on
encountered
application.
their
on
notes
cautionary
or