With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
gsmBcLayer1Connection
gsm Bc Layer1 Connection
This attribute indicates the connection between the mobile and the IWF. Valid values are: transparent, Constant throughput, constant transit delay, and variable error rate (does not use Radio Link Protocol). nonTransparent, Improved error rate with variable transit delay and variable throughput (uses Radio Link Protocol).
Back to Nortel-Magellan-Passport-GsmIwfMIB MIB page.
IPHost Network monitor allows you to monitor gsmBcLayer1Connection 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 multiplexers right now.