With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
vrPpOperTable
Virtual Router Passport Operational Table
1.3.6.1.4.1.562.2.4.1.100.3.104
This group includes operational attributes specific to the ProtocolPort component.
Back to Nortel-Magellan-Passport-VirtualRouterMIB MIB page.
IPHost Network monitor allows you to monitor vrPpOperTable 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 speech servers right now.
