With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
gvcIfDlciFrmDiscardToNetwork
General Vc Interface Dlci Frm Discard To Network
This attribute counts the frames which were received from the Protocol Port and discarded due to the aBitStatusFromNetwork being in an inactive state. When this count exceeds the maximum, it wraps to zero.
Back to Nortel-Magellan-Passport-GeneralVcInterfaceMIB MIB page.
IPHost Network monitor allows you to monitor gvcIfDlciFrmDiscardToNetwork 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 modems right now.