Cisco 7000 Series Hardware Installation And Maintenance page 179

Processor LEDs
Interface
TxC
clock
On
LED
the
Conn
normal
and
connected
Figure
The
default
no default
is
without
mode
the
DTE
external
the
Cisco Hardware
7010 Installation
B-fl
DTE
clockOn
transmit
DCE
from
the remote
signal
DCE LED
this
interfaces indicates
DCE
on when
the
is
port
DTE
remote device which
loopbackOn
or
connected
FSIP
the
operation properly
is
CA
DCE
active
available are
network
the or external
to
DTE
TXD
TXC
TXC
RXC
RXC
RXD
RXD
DCD
DSR
DTR
RTS
CTS
LL
DCE
DIE
fl-i to
Signals
mode
ports without
for all interface
clock on interfaces
rate set the
terminate the port or connect
to
having
and FSIP
interface
the
type
cable connected port with
is to
clock
that
is sent
signal
and Maintenance
LED
when
on
interfaces this is
RxC
receive clock
the clock
sending internal
is
PC
or another
host
is usually
DTE DCE
both and
interfaces
connected the external
to
LED
When
off the
this
is
B2
See
device Table
DCE
RXD
RXC
TXC
cJ
cable
port adapter
DCE
The
default
allows
Because
cable
DTE
becomes
when
port
DTE
clock the
rate
set
DCE
from
remote
the
the port the transmit
receiving
is
DCE
During normal
operation
which FSIP
the
signal
generates
router
LED
indicate
this on to
is
TA DTE
device and
available
mode
FSIP
in loopback
or
is
DCE
attached
is
although
you to perform local loopbacks
the
cables determine
serial adapter
DTE
cable connected
is
the clockrate and
will
ignore
this
to
is not
there
to it If
use