With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
btdsMcdnVdcdTable
btds Mcdn Vdcd Table
This group contains attributes which count the protocol messages indicating changes to operational modes of VoiceServices.
Back to Nortel-Magellan-Passport-BitTransparentMIB MIB page.
IPHost Network monitor allows you to monitor btdsMcdnVdcdTable 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 multiplexers right now.