With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
frMuxLmiLinkVerificationTimer
Frame Relay Mux Lmi Link Verification Timer
1.3.6.1.4.1.1570.1.3.10.1.2
This attribute specifies the time interval (in seconds) at which the FrMux sends Status Enquiry messages to the interface. Exchange of Status Enquiry and Status Report messages constitutes a polling cycle, so this attribute may also be interpreted as time interval at which the FrMux initiates polling cycles. It must be less than checkPointTimer (t392) configured at the other end of the Frame Relay interface. This attribute corresponds to t391 of the ANSI and CCITT specifications, and nT1 of the Vendor Forum specification.
Back to Nortel-Magellan-Passport-FrameRelayMuxMIB MIB page.
IPHost Network monitor allows you to monitor frMuxLmiLinkVerificationTimer 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 switches right now.