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Chapter 4 Troubleshooting
Problems after First Startup
4-4
Cisco 811 and Cisco 813 Routers Hardware Installation Guide
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If the problem continues after these checks, call
your Cisco reseller.
No link to ISDN
network. ISDN DSU,
LINE, B1, B1 RXD,
B1 TXD, B2, B2 RXD,
or B2 TXD LED is off.
One of the following
cable-related problems:
• Improperly connected
cable
• Damaged cable
Perform the following tasks in the following
order:
• To make sure you have cabled the ISDN
port correctly, see the “Connecting an ISDN
Line” section in Chapter 3, “Installation.”
• Make sure the connectors at both ends of
each cable are securely connected.
• Make sure each cable is not physically
damaged. If it is, replace it.
Problem with ISDN line Contact your telephone service provider to
determine if there is a problem with your line.
If the problem continues after these checks, call
your Cisco reseller.
No link to digital
telephone.
One of the following
cable-related problems:
• Improperly connected
cable
• Damaged cable
Perform the following tasks in the following
order:
• To make sure you have cabled the port
correctly, see the “Connecting a Digital
Telephone” section in Chapter 3,
“Installation.”
• Make sure the connectors at both ends of
each cable are securely connected.
• Make sure each cable is not physically
damaged. If it is, replace it.
Problem with ISDN line Contact your telephone service provider to
determine if there is a problem with your line.
If the problem continues after these checks, call
your Cisco reseller.
Table 4-2 Problems After First Startup (continued)
Symptom Problem Solutions