With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
mcsMgrDprsMcsEpGEpLastTransportConnectionClearCause
mcs Manager Dprs Mcs Ep G Ep Last Transport Connection Clear Cause
This attribute indicates the most recent clear cause for the transport connection. This indicates the causes provided by the network. A value of zero indicates that the transport connection has never been cleared. A value of 1000 indicates that the network has not provided a clear cause for the transport connection clearing. Section 5.4.5.15 of the ATMF UNI 3.1 specification lists the clear causes provided by the network.
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IPHost Network monitor allows you to monitor mcsMgrDprsMcsEpGEpLastTransportConnectionClearCause 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.