With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
frNniDlciABitStatusToIf
Frame Relay Nni Dlci A Bit Status To If
This attribute is the most recent A-bit status sent to the interface. The A-bit status is part of the LMI protocol, and indicates willingness to accept data from the local interface. When an inactive setting is sent out, the Frame Relay service will discard any data offered from the local interface. When an active setting is sent out, the Frame Relay service will try to process all data offered from the local interface.
Back to Nortel-Magellan-Passport-FrameRelayNniMIB MIB page.
IPHost Network monitor allows you to monitor frNniDlciABitStatusToIf 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.