With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
x25DteInThroughputClassSize
x25 Dte In Throughput Class Size
1.3.6.1.4.1.562.2.4.1.90.23.1.9
This attribute specifies the value of the receive throughput class to be negotiated. A value of notSpecified means the facility is not signalled.
Back to Nortel-Magellan-Passport-X25DteMIB MIB page.
IPHost Network monitor allows you to monitor x25DteInThroughputClassSize 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.