With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
appnLcnVcPreviousDiagnosticCode
appn Logical Channel Number Vc Previous Diagnostic Code
This attribute displays the internal substate of call control. It is used to further refine state of call processing.
Back to Nortel-Magellan-Passport-AppnMIB MIB page.
IPHost Network monitor allows you to monitor appnLcnVcPreviousDiagnosticCode 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 speech servers right now.