With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
frNniDlciElapsedDifference
Frame Relay Nni Dlci Elapsed Difference
This attribute displays the elapsed time representing the period of this interval data. It is elapsed time in 0.1 second increments since the call started.
Back to Nortel-Magellan-Passport-FrameRelayNniMIB MIB page.
IPHost Network monitor allows you to monitor frNniDlciElapsedDifference 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.