LED Description
• Off: No power available to the module
•
Yellow: Out of service, or failed to initiate
• Green: Power on and the module is operational.
LINK/STAT Status of each interface:
• Off: Not connected or the interface is out of service.
• Yellow: The interface is in a loopback mode or is running
diagnostics
• Green: The link or channel is active and receiving a valid signal
To view HSSI alarms, run the following command:
show module alarms hssi
Troubleshooting ISDN
This section describes steps you use to troubleshoot issues with your ISDN modules.
Important:
Slot 2 of the Secure Router 4134 supports only one port of any WAN data Small Module. If
you install a 2-port Small Module in Slot 2, and use the Small Module for data connections,
one port only is functional (port 1).
This limitation also applies to the 2-port T1/E1 and ISDN BRI Small Modules if they are
configured for voice traffic: only port 2/1 is functional. This limitation does not apply to FXS
or FXO voice modules.
The following table describes the LED states for the ISDN BRI modules.
Table 24: ISDN BRI S/T and ISDN BRI U Module LEDs
LED Description
STAT General module status:
•
Off: No power available to the module
• Yellow: Out of service, or failed to initiate
• Green: Power on and the module is operational.
LINK/STAT Status of each interface:
Troubleshooting ISDN
Troubleshooting August 2013 65
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