With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
gsmBcV42IBytesTx
gsm Bc V42 I Bytes Tx
This attribute counts the total number of bytes that the V.42 transmitted to the Public Switched Telephone Network (PSTN) modem in a data call. The counter wraps when it exceeds the maximum value.
Back to Nortel-Magellan-Passport-GsmIwfMIB MIB page.
IPHost Network monitor allows you to monitor gsmBcV42IBytesTx 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.