Installation guide

1-Port T1/FT1 DSU/CSU Card
Cisco WAN Interface Cards Hardware Installation Guide
3-22
Figure 3-21 T1/FT1 Card—Front Panel
Table 3-5 T1/FT1 Card LEDs and Button
Feature Color Description
LP LED Yellow Line or loopback state is detected or is
manually set by the user.
Off Normal operation.
AL LED Red No receive signal.
Yellow Remote station has an alarm condition.
Blue The remote station is probably out of
service. If the remote station is an
IOS-based router, its interface may be
shut down.
Off Normal operation.
CD LED Green Internal DSU/CSU in the WAN
interface card is communicating with
another DSU/CSU. This LED is on
during normal operation.
SEE MANUAL
BEFORE
INSTALLATION
H11048
CD
LP
AL
Loopback
button
LP AL CD
LOOP
BACK
DSU
CSU
T1
T1 port
T1 DSU/CSU