With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
appnDlciDcOptionsTable
appn Dlci Dc Options Table
The Options group defines attributes associated with a direct call. It defines a complete connection in terms of path and call options. This connection can be permanent (PVC) or switched (SVC). It can have facilities. The total number of bytes of facilities including the facility codes, and all of the facility data from all of the four classes of facilities: CCITT_Facilities DTE_Facilities National_Facilities International_Facilities must not exceed 512.
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IPHost Network monitor allows you to monitor appnDlciDcOptionsTable 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.