With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
gsmBcV42bisCompRatioEncoder
gsm Bc V42bis Comp Ratio Encoder
This attribute indicates the number of uncompressed bytes divided by the number of compressed bytes. A value greater than one means that the data is being compressed. This is the compression ratio achieved by the V.42bis encoder running on the Passport. This attribute is relevant for both protocol modes transparent and compressed as the encoder switches between the two modes.
Back to Nortel-Magellan-Passport-GsmIwfMIB MIB page.
IPHost Network monitor allows you to monitor gsmBcV42bisCompRatioEncoder 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.