User's Manual

An OK response appears.
10. Enter AT-DEBUG.
The time and date and then the Hello> prompt appears to show the system is
ready to accept commands.
11. To erase the current configuration in RAM memory enter upgrade.
The B5800 Branch Gateway system erases the current software and then sends
out a BOOTP request on the network for new software. Manager responds and
starts transferring the software using TFTP.
Erasing the core software via the boot loader
Procedure
1. Start Manager.
2. In the BOOTP entries, check that there is an entry that matches the MAC address,
IP address and .bin file used by the system. An entry is normally automatically
created when a configuration has been loaded from the B5800 Branch Gateway
system.
3. If an entry is not present, do the following:
a) Create a new entry manually. The MAC address and IP address can be found
in the control unit settings in the configuration file.
b) Close Manager.
c) Restart Manager.
4. Under File > Preferences ensure that Manager is set to 255.255.255.255. Also
check that Enable BootP Server is checked.
5. Select View > TFTPLog.
6. Check that the required .bin file is present in Manager's working directory.
7. Attach the serial cable between the PC and the DTE port on the control unit.
8. Start the terminal program on your PC.
Note:
Ensure that the DTE port settings are configured as described in RS232 DTE port
settings on page 242. Within a HyperTerminal session, the current settings are
summarized across the base of the screen.
9. Arrange the program windows so that the terminal program and Manager TFTP log
are visible at the same time.
10. Switch off power to the control unit.
DTE port maintenance
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