With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
vctVcIndex
VC Tester Vc Index
1.3.6.1.4.1.562.2.4.1.5130.4.1.1.10
This variable represents the index for the vctVc tables.
Back to Nortel-Magellan-Passport-VcTesterMIB MIB page.
IPHost Network monitor allows you to monitor vctVcIndex 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.