With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
btdsMcdnFramesTable
btds Mcdn Frames Table
This group contains attributes which count layer 2 frames potentially significant for voice/data call discrimination. See also the description of HdlcStatistics group.
Back to Nortel-Magellan-Passport-BitTransparentMIB MIB page.
IPHost Network monitor allows you to monitor btdsMcdnFramesTable 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.