With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
appnIsrSessLimitedResource
appn Isr Sess Limited Resource
This attribute specifies whether the session uses a limited resource link. A limited resource link remains active only when being used and is deactivated when session traffic ceases.
Back to Nortel-Magellan-Passport-AppnMIB MIB page.
IPHost Network monitor allows you to monitor appnIsrSessLimitedResource 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.