AudioCodes 400HD Series - Recovering Firmware; Restarting the Phone; Restarting the Phone from the Screen; Restarting the Phone from the Web Interface

Administrator's Manual 8. Troubleshooting
Version 3.4.4 199 400HD IP Phones Series - Teams Compatible
8.7.3 Recovering Firmware
If the phone is powered off for some reason during the firmware upgrade process, the phone
becomes unusable.
 To recover the phone firmware:
1. Ensure that your DHCP server supports Options 66 (TFTP server address) and 67
(firmware file), and that these are configurable.
2. Before connecting the phone, make sure the TFTP server is running and the firmware
file for recovery is located in the correct location.
Note: Make sure the firmware file for recovery is up to date. Make sure it’s one of the
latest GA firmware versions released by AudioCodes.
3. Connect your phone to the IP network and then connect the phone to the power outlet;
a. The phone sends a TFTP request to the IP address indicated in the DHCP Option
66 field to retrieve the firmware file indicated in the DHCP Option 67 field.
b. The phone, in the DHCP Discover message sends its model name in the DHCP
Option 77 field. The DHCP server, according to the phone model, sets the
appropriate firmware file name in the DHCP Option 67 field sent to the phone
(e.g., 450HD_2.0.9.img).
c. The phone then upgrades to the recovery firmware.
d. After the firmware upgrade process completes, the phone boots up successfully.
See also Appendix B.
8.7.4 Restarting the Phone
The phone can be restarted from phone's screen or the Web interface.
8.7.4.1 Restarting the Phone from the Screen
This section shows how to restart the phone from its screen.
 To restart the phone from its screen:
1. Open the Administration menu (MENU key > Administration).
2. Select the Restart option; a warning message pops up requesting you to confirm:
Warning: Restart the phone?
3. Select Yes to confirm phone restart or No to cancel.
8.7.4.2 Restarting the Phone from the Web Interface
This section shows how to restart the phone from the Web interface:
 To restart the phone from the Web interface:
1. Open the Restart System page (Management tab > Administration menu > Restart
System).