With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
x25DtePLcnProvTable
x25 Dte P Logical Channel Number Prov Table
1.3.6.1.4.1.562.2.4.1.90.3.10
This group contains the provisionable parameters for the permanent logical channels (PLcns) on the X.25 interface (corresponding to Permanent Virtual Circuits (PVCs) provisioned on the Wide Area Network).
Back to Nortel-Magellan-Passport-X25DteMIB MIB page.
IPHost Network monitor allows you to monitor x25DtePLcnProvTable 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.