With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
appnActiveSvcs
appn Active Svcs
This attribute indicates the number of general switched virtual circuits (GSVC) on this Appn node at the time of the query. This attribute does not include the Frame Relay switched virtual circuits.
Back to Nortel-Magellan-Passport-AppnMIB MIB page.
IPHost Network monitor allows you to monitor appnActiveSvcs 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.