Cisco 7941G Troubleshooting And Maintenance page 3

Troubleshooting and Maintenance
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 Address 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 see the TFTP server or to Cisco Unified Communications Manager, you must ensure
that you have specified a DNS server. See
Cisco Unified Communications Manager Settings On Phone
Problem
The phone may have the correct Cisco Unified Communications Manager information.
Solution
On the Cisco Unified IP Phone, press the Settings button, choose Device Configuration, and look at the
Unified CM Configuration options. The Cisco Unified IP Phone attempts to open a TCP connection to all
Phone Cannot Connect to TFTP Server or to Cisco Unified Communications Manager
Check TFTP Settings, on page
Check DHCP Settings, on page
Verify DNS Settings, on page
14.
14.
14.
Troubleshooting and Maintenance
3