With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
frUniSigLastDlciReceivedStatus
Frame Relay Uni Sig Last Dlci Received Status
This attribute shows the value of the DLCI that has most recently received a STATUS message from the user. The initial value of this attribute is 0.
Back to Nortel-Magellan-Passport-FrameRelayUniMIB MIB page.
IPHost Network monitor allows you to monitor frUniSigLastDlciReceivedStatus 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.