With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
appnDlciVcPeakRetryQueueSize
appn Dlci Vc Peak Retry Queue Size
This attribute displays the peak size of retransmission queue. This attribute is used as an indicator of the acknowledgment behavior across the subnet. Records the largest body of unacknowledged packets.
Back to Nortel-Magellan-Passport-AppnMIB MIB page.
IPHost Network monitor allows you to monitor appnDlciVcPeakRetryQueueSize 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.