With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
fileVersion
file Version
1.3.6.1.4.1.6302.2.1.5.1.8.7
A version indicator of the file (filename) referred to above (for internal use only).
Back to Nortel-Magellan-Passport-AlarmMIB MIB page.
IPHost Network monitor allows you to monitor fileVersion on Allied Telesis device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Nortel modems right now.