With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
frDteReceiveShort
Frame Relay Dte Receive Short
Count of received frames (including LMI frames) discarded because they were less than four octets long or they were missing the Organizationally Unique Identifier (OUI) for a SNAP header. 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 frDteReceiveShort 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.