With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
frUniDnaCugCugOptionsTable
Frame Relay Uni Dna Cug Cug Options Table
Attributes in this group define ClosedUserGroup options associated with interlockCode. DNA's with the same CUG (interlockCode) can make calls within this group. Various combinations which permit or prevent calls in the same CUG group are defined here.
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IPHost Network monitor allows you to monitor frUniDnaCugCugOptionsTable 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.