With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
traceRcvrX25DnaDataNetworkAddress
trace Receiver X25 Dna Data Network Address
1.3.6.1.4.1.562.2.4.1.106.2.2.2.10.1.2
The Dna attribute contains digits which form a unique identifier for the calling end of the trace connection. Dna digits are selected and assigned by network operators. The maximum Dna length is 15 digits.
Back to Nortel-Magellan-Passport-X25TraceRcvrMIB MIB page.
IPHost Network monitor allows you to monitor traceRcvrX25DnaDataNetworkAddress 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.