With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
vsrIfAdminStatus
VoiceRoute If Admin Status
1.3.6.1.4.1.562.2.4.1.117.11.1.1
The desired state of the interface. The up state indicates the interface is operational. The down state indicates the interface is not operational. The testing state indicates that no operational packets can be passed.
Back to Nortel-Magellan-Passport-VoiceNetworkingMIB MIB page.
IPHost Network monitor allows you to monitor vsrIfAdminStatus 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.