Cisco 7975G Troubleshooting And Maintenance page 3

Troubleshooting and Maintenance
Solution
As the phone cycles through the startup process, you can access status messages that might provide you with
information about the cause of a problem. See
messages and for a list of potential errors, their explanations, and their solutions.
Phone Cannot Connect to TFTP Server or to Cisco Unified Communications Manager
Problem
If the network is down between the phone and either the TFTP server or Cisco Unified Communications
Manager, the phone cannot start up properly.
Solution
Ensure that the network is currently running.
TFTP Server Settings
Problem
The TFTP server settings may not be correct.
Solution
Check the TFTP settings. See
IP Addressing and Routing
Problem
The IP addressing and routing fields may not be correctly configured.
Solution
You should verify the IP addressing and routing settings on the phone. If you are using DHCP, the DHCP
server should provide these values. If you have assigned a static IP address to the phone, you must enter these
values manually. See
DNS Settings
Problem
The DNS settings may be incorrect.
Solution
If you are using DNS to refer to the TFTP server or to Cisco Unified Communications Manager, you must
ensure that you have specified a DNS server. See
Phone Cannot Connect to TFTP Server or to Cisco Unified Communications Manager
Status Messages Screen
Check TFTP Settings, on page
Check DHCP settings, on page
for instructions about accessing status
13.
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Verify DNS Settings, on page
Troubleshooting and Maintenance
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