Erasing the Operational Software

This process should be performed from a PC with a fixed IP address, directly connected to the IP Office control unit and with the IP Office system disconnected from any network. During the process, the control unit's IP address may default to a value in the 192.168.42.1 to 192.168.42.10 range. If this occurs it may be necessary to amend the BOOTP entry in Manager to match the address the system is using.

•	Do not perform any of the following processes unless absolutely necessary. The IP Office software can normally be upgraded through Manager using the File \| Advanced \| Upgrade command.

•	This process erases the operational software. Before attempting this process you must know the MAC and IP addresses of the system, plus have a backup copy of its configuration and the correct .bin file for the control unit type and level of software.

•	The presence of any firewall blocking TFTP and or BOOTP will cause this process to fail.

1.	Run Manager. In the BOOTP entries, check that there is an entry that matches the MAC Address, IP Address and .bin file used by the system (the first two details can be found in the Module settings in the system's configuration file).

2.	If an entry is not present, create a new entry. Then close and restart Manager.

3.	Under File \| Preferences ensure that Manager is set to 255.255.255.255. Also check that Enable BootP Server is checked.

5.	Check that the required .bin file is present in Manager's working directory.

6.	Attach the serial cable between the PC and the DTE port on the IP Office control unit.

7.	Start the terminal program on your PC. Ensure that it has been setup as listed in DTE Port Settings. Within a HyperTerminal session, the current settings are summarized across the base of the screen.

8.	Arrange the program windows so that the Terminal program and Manager TFTP Log are visible at the same time.

9.	Enter AT (note upper case). The control unit should respond OK.

10.	Enter AT-DEBUG. The control unit should response with the time and date and then Hello> to show it is ready to accept commands.

11.	To erase the current configuration in RAM memory enter upgrade.

12.	The IP Office will erase its current software and then send out a BootP request on the network for new software. Manager will respond and start transferring the software using TFTP.

1.	Run Manager. In the BOOTP entries, check that there is an entry that matches the MAC Address, IP Address and .bin file used by the system (the first two details can be found in the Module settings in the system's configuration file).

2.	If an entry is not present, create a new entry. Then close and restart Manager.

3.	Under File \| Preferences ensure that Manager is set to 255.255.255.255. Also check that Enable BootP Server is checked.

5.	Check that the required .bin file is present in Manager's working directory.

6.	Attach the serial cable between the PC and the DTE port on the IP Office control unit.

7.	Start the terminal program on your PC. Ensure that it has been setup as listed in DTE Port Settings. Within a HyperTerminal session, the current settings are summarized across the base of the screen.

8.	Arrange the program windows so that the Terminal program and Manager TFTP Log are visible at the same time.

9.	Switch off power to the IP Office control unit.

10.	Power on the control unit and press the escape key every second until you get a Loader message. Below is an example. P12 Loader 2.4 CPU Revision 0x0900

11.	Enter AT (note upper case). The control unit should respond OK.

12.	Enter AT-X. The control unit should respond Multi-Sector Erase.

13.	The control unit will now request the .bin file it requires from Manager. This process appears in the TFTPLog.

14.	If the file transfers does not appear to be taking place, check that the IP address shown in the TFTPLog matches the BOOTP entry. Adjust the BOOTP entry if necessary.