With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
vctVcCalledNpi
VC Tester Vc Called Npi
1.3.6.1.4.1.562.2.4.1.5130.4.10.1.6
This attribute displays the Numbering Plan Indicator (NPI) of the called end.
Back to Nortel-Magellan-Passport-VcTesterMIB MIB page.
IPHost Network monitor allows you to monitor vctVcCalledNpi 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.