With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
dclActive64kCalls
dcl Active64k Calls
This attribute indicates the number of unrestricted 64 kbit/s calls that are currently in progress on this DcmeLink.
Back to Nortel-Magellan-Passport-DcmeMIB MIB page.
IPHost Network monitor allows you to monitor dclActive64kCalls 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 multiplexers right now.