Possible explanation and actionDescriptionMessage
Obtain a new copy of the phone
firmware and place it in the
TFTPPath directory. You should only
copy files into this directory when the
TFTP server software is shut down;
otherwise, the files may be corrupted.
Downloaded software file is
corrupted.
Checksum Error
None. This message is informational
only. Neither the CTL file nor the ITL
file was installed previously.
For more information about the trust
list, see Cisco Unified
Communications Manager Security
Guide.
The CTL and ITL files are installed
on the phone.
CTL and ITL installed
None. This message is informational
only. The CTL file was not installed
previously.
For more information about the CTL
file, see the Cisco Unified
Communications Manager Security
Guide.
A certificate trust list (CTL) file is
installed in the phone.
CTL Installed
Problem with the CTL file on the
TFTP server.
For more information, see the Cisco
Unified Communications Manager
Security Guide.
The phone could not update the
certificate trust list (CTL) file.
CTL update failed
Network is busy: The errors should
resolve themselves when the network
load reduces.
No network connectivity between the
DHCP server and the phone: Verify
the network connections.
DHCP server is down: Check
configuration of DHCP server.
Errors persist: Consider assigning a
static IP address.
DHCP server did not respond.DHCP timeout
Cisco Unified IP Phone 8961, 9951, and 9971 Administration Guide for Cisco Unified Communications Manager
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