With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
gvcIfDlciLdevActiveLinkStations
General Vc Interface Dlci Ldev Active Link Stations
This attribute indicates the number of active link station connections using this device mapping component. It includes the link stations using the Qllc and the Frame-Relay connections.
Back to Nortel-Magellan-Passport-GeneralVcInterfaceMIB MIB page.
IPHost Network monitor allows you to monitor gvcIfDlciLdevActiveLinkStations 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.