With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
frMuxLmiStatsTable
Frame Relay Mux Lmi Stats Table
1.3.6.1.4.1.1570.1.3.13
This group contains the operational statistics for the FrMux Local Management Interface.
Back to Nortel-Magellan-Passport-FrameRelayMuxMIB MIB page.
IPHost Network monitor allows you to monitor frMuxLmiStatsTable 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.