With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
vncsDPDnProvTable
vncs DP Dn Prov Table
1.3.6.1.4.1.562.2.4.1.44.2.2.10
This group represents attributes that the prefix directory number maps to.
Back to Nortel-Magellan-Passport-VncsCallServerMIB MIB page.
IPHost Network monitor allows you to monitor vncsDPDnProvTable 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.