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Table 11: LED Identification and Activity Descriptions (continued)
LED Location LED Label LED Indicator LED Color OFF to ON ON to OFF
ACTIVE
Port status
Green
Port configured
Port not
configured
LOOPBK
Port status
Yellow Port in local
loopback or
remote loopback,
depending on
thetypeof
connection.
Port not in
loopback
ERROR
Port status
Red Port is enabled or
comes online
Port is disabled or
goes offline
V.35
Port status
Green
V.35 cable
connected
V.35 cable
disconnected
X.21
Port status
Green
X.21 cable
connected
X.21 cable
disconnected
DCE
Port status
Green
DCE cable
connected
DCE cable
disconnected
X.21/V.35 line
module
DTE
Port status
Green
DTE cable
connected
DTE cable
disconnected
SYNC
Port status
Green
In frame Not in frame
YEL ALM
Port status
Yellow Far-end receive
failure (FERF)
exists
No FERF present
Other line
modules
RED ALM
Port status
Red Loss of sync/frame In frame
The following figures show a representative module for each of the three variations:
SRP module (Figure 47)
Ethernet line module (Figure 48)
Other line modules (Figure 49)
Understanding Status LEDs to Troubleshoot 107