Chapter 20 Connecting T3/E3 Network Modules
T3/E3 Network Module LEDs
Tip When connecting the T3/E3 network module to a port adapter used in another router series, verify that 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
Figure 20-3 T3/E3 LEDs
SEE MANUAL BEFORE INSTALLING NETWORK MODULE
| T3/E3 |
TX | RX |
CD
LED
LP
LED
CD | LP |
AIS FERF/RAI
FERF/RAI |
LED |
AIS |
LED |
AL
AL
LED
EN 
72537
EN
LED
Table
LED | Meaning |
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CD | Green indicates that a signal is present on the port. |
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LP | Yellow indicates that a loopback condition is present on the port. |
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AIS | Yellow indicates an alarm on the DS3 transmission. |
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FERF/RAI | Yellow indicates a remote failure at the far end of the connection. |
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AL | Yellow indicates that the port is out of frame. |
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EN | Green indicates that the network module has passed |
| the router. |
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Related Documents
For additional information, see the following documents.
Tip For information on obtaining documentation, see the “Obtaining Documentation” section on page viii . For information on obtaining technical assistance, see the “Obtaining Technical Assistance” section on page xi.
Cisco Network Modules Hardware Installation Guide
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