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5 • Troubleshooting and maintenance Model 3120 RAS Getting Started Guide
58 Fault analysis
ETHERNET Front panel Green Off
• A valid link has not been detected.
• Verify that the cable is plugged into the hub, switch,
or workstation and the RAS.
• Verify that the hub, switch, or workstation is powered
on.
• Replace the cable. If the problem still exists, refer to
“Replacing the RAS” on page 61 to replace the RAS.
If the problem still exists, troubleshoot the hub,
switch, or workstation.
On solid Link status is nominal for the Ethernet port. No action rec-
ommended.
CALLS ACT Front panel Green
On solid Indicates call activity on the RAS. No action recom-
mended.
Flashing A call is incoming. No action recommended.
Off No active calls on the RAS. No action recommended.
WAN PORT— FRAME Front panel Green On solid Indicates normal activity at each of the four T1/E1/PRI
links. No action recommended.
Flashing Indicates that the RAS is detecting the network, but is
unable to synchronize with it.
Off Indicates an error.
WAN PORT— ERROR Front panel Red On solid Indicates signal from WAN is not present.
Flashing Intermittent errors on the WAN port are recognized.
Off Indicates normal activity at each of the four T1/E1/PRI
links. No errors recognized.
10/100 ETHERNET A or
10/100 Ethernet B
Rear panel Yellow On solid Link is valid but no packets are seen. No action recom-
mended.
Off
• A valid link has not been detected.
• Verify that the cable is plugged into the hub, switch,
or workstation and the RAS.
• Verify that the hub, switch, or workstation is powered
on.
• Replace the cable. If the problem still exists, refer to
“Replacing the RAS” on page 61 to replace the RAS.
If the problem still exists, troubleshoot the hub,
switch, or workstation.
Flashing Packets are detected at the Ethernet port. No action rec-
ommended.
10/100 ETHERNET A or
10/100 Ethernet B
Rear panel Green On solid 100 Mbps speed. No action recommended.
Off 10 Mbps speed. No action recommended.
Expansion
Front panel Off Not currently implemented.
Table 5. LED definitions
LED Location Color Status Meaning