With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
atmIfPnniSigFailedConnections
atm If Pnni Sig Failed Connections
This attribute counts the total number of switched connections that were not successfully established.The counter wraps to 0 when the maximum value is exceeded.
Back to Nortel-Magellan-Passport-AtmPnniMIB MIB page.
IPHost Network monitor allows you to monitor atmIfPnniSigFailedConnections 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.