With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
vRouteDegradedSubroutesTable
v Route Degraded Subroutes Table
1.3.6.1.4.1.562.2.4.1.116.310
This attribute indicates all of the VoiceSubroutes that have at least one SwitchedVoiceService whose operationalState is disabled.
Back to Nortel-Magellan-Passport-VoiceNetworkingMIB MIB page.
IPHost Network monitor allows you to monitor vRouteDegradedSubroutesTable 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 secure routers right now.