With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
sigChanEIsdnActiveChannels
sig Chan E Isdn Active Channels
1.3.6.1.4.1.562.2.4.1.115.14.16.1.1
This attribute indicates the number of currently active channels. This includes channels used by both, data and voice calls.
Back to Nortel-Magellan-Passport-VnetEuroIsdnMIB MIB page.
IPHost Network monitor allows you to monitor sigChanEIsdnActiveChannels 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.