With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
frUniSigLastDiagnosticCode
Frame Relay Uni Sig Last Diagnostic Code
This attribute indicates the last SVC diagnostic code signalled at the end of the connection or failure to connect. It is updated if the clear request comes from the subnet or the call is rejected locally by the VC. The same set of possible values provides the diagnostic code field in the accounting record.
Back to Nortel-Magellan-Passport-FrameRelayUniMIB MIB page.
IPHost Network monitor allows you to monitor frUniSigLastDiagnosticCode 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.