With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
gvcIfDlciLdevDmoTable
General Vc Interface Dlci Ldev Dmo Table
This group defines the device monitoring options.
Back to Nortel-Magellan-Passport-GeneralVcInterfaceMIB MIB page.
IPHost Network monitor allows you to monitor gvcIfDlciLdevDmoTable 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.