Cisco 8851, Administration Manual

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Phone Displays Error Messages
Problem
Status messages display errors during startup.
Solution
While 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 the
“
Display Status Messages Window
”
section for
instructions about accessing status messages and for a list of potential errors, their explanations, and their
solutions.
Phone Cannot Connect Using DNS
Problem
The DNS settings may be incorrect.
Solution
If you use DNS to access the TFTP server or Cisco Unified Communications Manager, you must ensure that
you specify a DNS server.
Configuration File Corruption
Problem
If you continue to have problems with a particular phone that other suggestions in this chapter do not resolve,
the configuration file may be corrupted.
Solution
Create a new phone configuration file.
Cisco IP Phone Cannot Obtain IP Address
Problem
If a phone cannot obtain an IP address when it starts up, the phone may not be on the same network or VLAN
as the DHCP server, or the switch port to which the phone connects may be disabled.
Solution
Ensure that the network or VLAN to which the phone connects has access to the DHCP server, and ensure
that the switch port is enabled.
Cisco IP Phone 8800 Series Multiplatform Phones Administration Guide
280
Startup Problems