With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
frNniTraceFilterTracedLength
Frame Relay Nni Trace Filter Traced Length
This attribute specifies the maximum number of bytes to trace per frame starting from the byte following the frame flag. If the frame length is longer than the value specified by this attribute, then the traced frame is truncated. This attribute can be set while a trace is active and takes effect immediately.
Back to Nortel-Magellan-Passport-FrameRelayNniTraceMIB MIB page.
IPHost Network monitor allows you to monitor frNniTraceFilterTracedLength 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.