With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
x25DteRgOperStatusTable
x25 Dte Rg Operational Status Table
1.3.6.1.4.1.562.2.4.1.90.7.13
This group includes the Operational Status attribute. This attribute defines the current operational state of this component.
Back to Nortel-Magellan-Passport-X25DteMIB MIB page.
IPHost Network monitor allows you to monitor x25DteRgOperStatusTable 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.