With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
frNniDlciABitStatusFromIf
Frame Relay Nni Dlci A Bit Status From If
This attribute is the most recent A-Bit status received from the interface.
Back to Nortel-Magellan-Passport-FrameRelayNniMIB MIB page.
IPHost Network monitor allows you to monitor frNniDlciABitStatusFromIf 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.