With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
tdmaBcModemOutbandBreak
tdma Bc Modem Outband Break
This attribute indicates whether inband or outband break control conversions are being performed. If outband break control is on, when the modem detects a break condition coming from the PSTN, the Modem Application Layer (MAL) converts the instruction into a primitive and forwards it to the Data Service Control (DSC). In the opposite direction with outband break control on, when the MAL receives a primitive from the DSC, the MAL converts the primitive into a break and forwards it to the PSTN. When a break condition is discovered all subsequent incoming data is discarded until a start bit is received.
Back to Nortel-Magellan-Passport-TdmaIwfMIB MIB page.
IPHost Network monitor allows you to monitor tdmaBcModemOutbandBreak 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.