With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
timeStorageType
time Storage Type
1.3.6.1.4.1.3646.1300.2.1.2.1.1.1.4
This variable represents the storage type value for the time tables.
Back to Nortel-Magellan-Passport-TimeMIB MIB page.
IPHost Network monitor allows you to monitor timeStorageType 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 switches right now.