With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
vctDnaCallOptionsTable
VC Tester Dna Call Options Table
1.3.6.1.4.1.562.2.4.1.5130.2.13
CallOptions group defines additional options for calls not related directly to direction of a call.
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IPHost Network monitor allows you to monitor vctDnaCallOptionsTable 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 secure routers right now.