With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
vncsVpStatsTable
vncs Vp Stats Table
1.3.6.1.4.1.562.2.4.1.44.3.4
This group contains the operational statistics data for a Voice Networking profile component.
Back to Nortel-Magellan-Passport-VncsCallServerMIB MIB page.
IPHost Network monitor allows you to monitor vncsVpStatsTable 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 secure routers right now.