It is recommended that all the recovery files be copied to the primary and secondary TFTP servers specified in the Dynamic Host Configuration Protocol (DHCP) options in order to facilitate automatic recovery of the phones.
5. Reboot the phone. If the phone is not in a reboot cycle, disconnect and reconnect the power adaptor, or if inline power is used, disconnect and reconnect
the Ethernet cable.
6. Verify the phone is functional. The menu and hold buttons must no longer be lit.
7. Re-configure the phone, as needed. If TFTP was originally used to configure the phone, it is possible that the phone does not require manual
re-configuration. In this case, the phone downloads the necessary configuration files from the TFTP server and automatically configures itself.
Note: If encryption was previously used on the Cisco 7905 or Cisco 7912, it is necessary to re-enter the encryption key into the phone.