With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
vrNsATStatsAddrStatPacketCount
Virtual Router Ns AT Stats Address Stat Packet Count
This is the number of packets which caused the enclosing Statistics group to to be incremented. This counter will wrap around to zero when it exceeds its maximum value, 4294967295.
Back to Nortel-Magellan-Passport-NetSentryMIB MIB page.
IPHost Network monitor allows you to monitor vrNsATStatsAddrStatPacketCount 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.