With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
appnLsCurrentDelay
appn Ls Current Delay
1.3.6.1.2.1.34.4.1.1.5.1.1.25
This attribute counts the time (in milliseconds) that it took for the last test signal to be sent and returned from this link station to the adjacent link station.
Back to Nortel-Magellan-Passport-AppnMIB MIB page.
IPHost Network monitor allows you to monitor appnLsCurrentDelay 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 modems right now.