ITG User’s Guide
Chapter 9 Upgrading the ITG
This chapter explains how to upgrade your ITG when new revision software becomes available.
Upgrades may improve system functionality or add new features to your ITG.
The ITG offers two operation modes. Under normal conditions, the ITG operates in regular
operational mode. When software upgrade is required, the ITG may be operated in download
mode. Under download mode, the CLI will support limited commands allowing users to read
new revision codes from a remote TFTP server and write it to the built-in flash non-volatile
storage.
The CLI under download differs from normal in the prompts and that it supports less commands.
9.1 Entering Download Mode
To switch from normal operation mode to download mode, use the
download
CLI command.
EITG>
download
<Enter>
Note:
To be able to switch to download mode from Telnet session, the TFTP loader on the ITG
must be version 3.00 or higher.
The ITG will terminate all on-going calls, shut down itself, reset and enter download mode. If
you enter download mode from Telnet session. The Telnet session will be terminated too. You
need to connect to the ITG from Telnet client again to be able to access the CLI commands.
Refer to Section Connection through Telnet in Chapter 8 for detailed information on how to
connect to ITG from Telnet client.
Upon entering the download mode, the CLI will show the following prompt.
EITGLoader>
Command Line Interface
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