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Chapter 20
Connecting T3/E3 Network Modules
When connecting the T3/E3 network module to a port adapter used in another router series, verify that
Tip
you are connecting the TX port on the network module with the RX port on the port adapter, and the TX
port on the port adapter to the RX port on the network module.
T3/E3 Network Module LEDs
All network modules have an enable (EN) LED. This LED indicates that the module has passed its
self-tests and is available to the router. See
module.
Figure 20-3 T3/E3 LEDs
NM-1T3/E3
Table 20-1 T3/E3 Network Module LEDs
LED
CD
LP
AIS
FERF/RAI
AL
EN
Related Documents
For additional information, see the following documents.
For information on obtaining documentation, see the
Tip
For information on obtaining technical assistance, see the
page
OL-2485-20
SEE MANUAL BEFORE INSTALLING NETWORK MODULE
CD
LP
AIS
CD
LED
LP
LED
Meaning
Green indicates that a signal is present on the port.
Yellow indicates that a loopback condition is present on the port.
Yellow indicates an alarm on the DS3 transmission.
Yellow indicates a remote failure at the far end of the connection.
Yellow indicates that the port is out of frame.
Green indicates that the network module has passed self-test and is available to
the router.
xi.
Figure 20-3
and
T3/E3
TX
RX
FERF/RAI
FERF/RAI
LED
LED
AIS
LED
"Obtaining Documentation" section on page
"Obtaining Technical Assistance" section on
Cisco Network Modules Hardware Installation Guide
T3/E3 Network Module LEDs
Table 20-1
for LEDs on the T3/E3 network
EN
AL
EN
AL
LED
viii.
20-3
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