Cisco 1760 - VPN Bundle Router Hardware Installation Manual page 72

Problem-Solving
Table 3-4 Troubleshooting ISDN
WIC Symptom
ISDN S/T Router is on,
but the OK
LED on the
card is off.
ISDN U Router is on,
but the NT1
LED on the
card is off.
Cisco 1760 Modular Access Router Hardware Installation Guide
3-14
Check the Following
Is the OK LED on?
Are all ISDN cables
properly connected?
Is the NT1 LED on?
Is the OK LED on?
Are all ISDN cables
properly connected?
Chapter 3
Possible Solutions
If no, the router/WIC might be
malfunctioning. Contact your Cisco
reseller.
If yes, the ISDN line might be
malfunctioning. Check with your
ISDN service provider.
If no, the NT1 might be
malfunctioning.
If no, the router/WIC might be
malfunctioning. Contact your Cisco
reseller.
If yes, the ISDN line might be
malfunctioning. Check with your
ISDN service provider.
Troubleshooting
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