TFTP server settings
Problem
The TFTP server settings may not be correct.
Solution
Check the TFTP settings. See Check TFTP settings, on page 134.
IP addressing and routing
Problem
The IP addressing and routing fields may not be configured correctly.
Solution
You should verify the Internet Protocol (IP) addressing and routing settings on the conference phone. If you
are using DHCP, the DHCP server should provide these values. If you have assigned a static IP address to
the conference phone, you must enter these values manually. See Check DHCP settings, on page 136
DNS settings
Problem
The DNS settings may be incorrect.
Solution
If you are using DNS to see the TFTP server or to Cisco Unified Communications Manager, you must ensure
that you have specified a Domain Name System (DNS) server. See Verify DNS settings, on page 136
Cisco Unified Communications Manager and TFTP servers are not running
If the Cisco Unified Communications Manager or TFTP services are not running, conference phones may not
be able to start up properly. However, in such a situation, it is likely that you are experiencing a system-wide
failure and that other conference phones and devices are unable to start up properly.
If the Cisco Unified Communications Manager service is not running, all devices on the network that rely on
it to make conference phone calls will be affected. If the TFTP service is not running, many devices will not
be able to start up successfully For more information, see Start service.
Configuration file corruption
Problem
If you continue to have problems with a particular conference phone that other suggestions in this chapter do
not resolve, the configuration file may be corrupted.
Cisco Unified IP Conference Phone 8831 Administration Guide for Cisco Unified Communications Manager 9.0
125
Troubleshooting and maintenance
Startup problems
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