With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
frDteBadFc
Frame Relay Dte Bad Fc
Count of received frames discarded because the frame control character was incorrect. This may indicate that the other side of the link is configured for a different link level protocol. This counter will wrap around to 0 when it exceeds its maximum count.
Back to Nortel-Magellan-Passport-FrameRelayDteMIB MIB page.
IPHost Network monitor allows you to monitor frDteBadFc 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 switches right now.