With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
gvcIfCallsFromNetwork
General Vc Interface Calls From Network
This attribute counts the number of Qllc and Frame-Relay calls received from the subnet by this interface, including successful and failed calls. When the maximum count is exceeded the count wraps to zero.
Back to Nortel-Magellan-Passport-GeneralVcInterfaceMIB MIB page.
IPHost Network monitor allows you to monitor gvcIfCallsFromNetwork 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.