With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
btdsLCoBytesToNetwork
btds L Co Bytes To Network
This attribute counts the number of bytes sent to the network over this Logical Connection.
Back to Nortel-Magellan-Passport-BitTransparentMIB MIB page.
IPHost Network monitor allows you to monitor btdsLCoBytesToNetwork 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.