With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
gvcIfActiveQllcCalls
General Vc Interface Active Qllc Calls
This attribute indicates the number of active Qllc calls on this service instance at the time of the query. It includes incoming and outgoing calls.
Back to Nortel-Magellan-Passport-GeneralVcInterfaceMIB MIB page.
IPHost Network monitor allows you to monitor gvcIfActiveQllcCalls 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.