With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
x25DtePLcnEncAddress
x25 Dte P Logical Channel Number Enc Address
1.3.6.1.4.1.562.2.4.1.90.3.10.1.2
This attribute specifies the encapsulation address of the remote host with which this PermLcn component defines a connection
Back to Nortel-Magellan-Passport-X25DteMIB MIB page.
IPHost Network monitor allows you to monitor x25DtePLcnEncAddress 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.