Set TFTP Server 1 Field
Procedure
Step 1 Unlock the CTL or ITL file if necessary (for example, if you are changing the administrative domain of the phone). If both the CTL and ITL files exist, unlock either of the files.
Step 2 If DHCP is enabled, set the Alternate TFTP option to Yes.
Step 3 Scroll to the TFTP Server 1 option, press Edit, and then enter a new TFTP server IP address.
Step 4 Press Validate, and then press Save.