With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
atmCRIndex
atm CR Index
This variable represents the index for the atmCR tables.
Back to Nortel-Magellan-Passport-AtmNetworkingMIB MIB page.
IPHost Network monitor allows you to monitor atmCRIndex 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.