With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
vctDcDfaIndex
VC Tester Dc Dfa Index
1.3.6.1.4.1.562.2.4.1.5130.3.268.1.1
This variable represents the index for the vctDcDfaTable.
Back to Nortel-Magellan-Passport-VcTesterMIB MIB page.
IPHost Network monitor allows you to monitor vctDcDfaIndex 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.