With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
traceSessionX25VcPreviousDiagnosticCode
trace Session X25 Vc Previous Diagnostic Code
1.3.6.1.4.1.562.2.4.1.106.3.2.2.10.1.5
This attribute displays the internal substate of call control. It is used to further refine state of call processing.
Back to Nortel-Magellan-Passport-X25TraceRcvrMIB MIB page.
IPHost Network monitor allows you to monitor traceSessionX25VcPreviousDiagnosticCode 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.