With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
frMuxOperStatusEntry
Frame Relay Mux Operational Status Entry
1.3.6.1.4.1.1570.1.8.1
An entry in the frMuxOperStatusTable.
Back to Nortel-Magellan-Passport-FrameRelayMuxMIB MIB page.
IPHost Network monitor allows you to monitor frMuxOperStatusEntry 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 secure routers right now.