With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
gvcIfDnaHgMHgAddrNumberingPlanIndicator
General Vc Interface Dna Hg M Hg Address Numbering Plan Indicator
This attribute indicates the Numbering Plan Indicator (NPI) the Dna that is entered. Address may belong to X.121 or E.164 plans.
Back to Nortel-Magellan-Passport-GeneralVcInterfaceMIB MIB page.
IPHost Network monitor allows you to monitor gvcIfDnaHgMHgAddrNumberingPlanIndicator 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.