With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
gsmBcRlpIFramesRx
gsm Bc Rlp I Frames Rx
This attributes counts the number of valid Information (I) frames received. The counter wraps when it exceeds the maximum value.
Back to Nortel-Magellan-Passport-GsmIwfMIB MIB page.
IPHost Network monitor allows you to monitor gsmBcRlpIFramesRx 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.