With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
traceSessionX25ComponentName
trace Session X25 Component Name
1.3.6.1.4.1.562.2.4.1.106.3.2.1.1.2
This variable provides the component's string name for use with the ASCII Console Interface
Back to Nortel-Magellan-Passport-X25TraceRcvrMIB MIB page.
IPHost Network monitor allows you to monitor traceSessionX25ComponentName 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 multiplexers right now.