With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
gvcIfDlciVcCalledDna
General Vc Interface Dlci Vc Called Dna
This attribute displays the Data Network Address (Dna) of the called (destination) DTE to which this call is sent. This address if defined at recieving end will complete Vc connection.
Back to Nortel-Magellan-Passport-GeneralVcInterfaceMIB MIB page.
IPHost Network monitor allows you to monitor gvcIfDlciVcCalledDna 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 speech servers right now.