With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
dcmeTrmThreshold
dcme Trm Threshold
This attribute is used to determine when the DcmeLink may be unable to handle incoming calls from the ISC. If the Dcme fails to replenish the number of preestablished connections the 'No trunk(s) available for 3.1 kHz audio or speech' TRM signal is sent to the ISC.
Back to Nortel-Magellan-Passport-DcmeMIB MIB page.
IPHost Network monitor allows you to monitor dcmeTrmThreshold 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 modems right now.