With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
gsmBcLayer1FramesRx
gsm Bc Layer1 Frames Rx
This attribute counts the number of frames received on the link. Discarded frames are not included in this count. The counter wraps when it exceeds the maximum value.
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IPHost Network monitor allows you to monitor gsmBcLayer1FramesRx 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.