Cisco Systems OL-8555-02 manual Guide, Configuration Menu Options section on

Chapter 6 Viewing Model Information, Status, Statistics, and Security Information on the Cisco Unified IP Phone

Status Menu

Table 6-2 Status Messages on the Cisco Unified IP Phone 7940G/7960G (continued)

Message	Description	Possible Explanation and Action
Checksum Error	Downloaded software file is	Obtain a new copy of the phone firmware and
	corrupted.	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.
CTL Installed	A certificate trust list (CTL)	None. This message is informational only.
	file is installed in the phone.	For more information about the CTL file,
		refer to Cisco Unified CallManager Security
		Guide.
CTL update failed	The phone could not update its	Problem with the CTL file on the TFTP
	certificate trust list (CTL) file.	server.
		For more information, refer to
		Cisco Unified CallManager Security Guide.
DHCP timeout	DHCP server did not respond.	• 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. See the “Network
		Configuration Menu Options” section on
		page 4-3for details on assigning a static
		IP address.

	Cisco Unified IP Phone 7940G/7960G Administration Guide for Cisco Unified CallManager 4.2(3)
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