With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
traceRcvrX25DnaCugOutCalls
trace Receiver X25 Dna Cug Out Calls
1.3.6.1.4.1.562.2.4.1.106.2.2.2.2.10.1.5
This attribute specifies that outgoing calls (from the DTE into the network) can be made using this particular Cug.
Back to Nortel-Magellan-Passport-X25TraceRcvrMIB MIB page.
IPHost Network monitor allows you to monitor traceRcvrX25DnaCugOutCalls 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 modems right now.