Troubleshooting The Power System; Troubleshooting Isdn - Cisco 1603R User Manual

Troubleshooting the Power System

If the router external power supply fails, it should be returned to Cisco. Check the following
items to help isolate the problem:
•
Router shuts down after being on a short time.
— Check the environmental site requirements in the "Site Requirements" section in
— If the front-panel SYSTEM PWR LED is not on, the power supply has failed.
•
If the router partially boots, but all LEDs remain off, the power supply has failed.
•
If the router is on, but the front-panel SYSTEM PWR LED is off, the power supply has
failed.
•
If the front-panel SYSTEM PWR LED is on, the front-panel SYSTEM OK LED is off,
and the router does not pass console or EIA data, the power supply has failed.

Troubleshooting ISDN

This section describes problems related to the ISDN line that might occur.
Two commands are useful when troubleshooting ISDN:
•
For routers with an ISDN S/T interface, enter the clear interface bri0 command to
terminate any active ISDN calls and to reset the ISDN BRI interface:
Router# clear interface bri0
•
For routers with an ISDN U interface, enter the clear controller bri0 command to
terminate any active ISDN calls, to reset the ISDN BRI interface, and to reset the ISDN
line between the router and the central office switch:
Router# clear controller bri0
the Regulatory Compliance and Safety Information for Cisco 1600 and Cisco 1700
Routers document that came with your router.
Troubleshooting the Power System
Troubleshooting A-7