With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
btdsMcdnHdlcTable
btds Mcdn Hdlc Table
This group contains attributes which count the signalling frame events.
Back to Nortel-Magellan-Passport-BitTransparentMIB MIB page.
IPHost Network monitor allows you to monitor btdsMcdnHdlcTable 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.