With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
dataSigChanCcInChannelBusy
data Sig Chan Cc In Channel Busy
This attribute counts the number of valid incoming calls rejected due to no available B-Channels. This counter wraps to zero after reaching its maximum value.
Back to Nortel-Magellan-Passport-DataIsdnMIB MIB page.
IPHost Network monitor allows you to monitor dataSigChanCcInChannelBusy 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.