With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
appnDnaCugIncCalls
appn Dna Cug Inc Calls
This attribute, if set to allowed indicates that incoming calls (from the network to the DTE) be made using this particular Cug. If set to disallowed, then incoming calls cannot be made using this Cug - such calls will be cleared by the local DCE. This attribute corresponds to the CCITT 'Incoming Calls Barred' feature for Cugs in that incoming calls are barred if this attribute is set to a value of disallowed.
Back to Nortel-Magellan-Passport-AppnMIB MIB page.
IPHost Network monitor allows you to monitor appnDnaCugIncCalls 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 switches right now.