With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
dclRejected3kHzCalls
dcl Rejected3k Hz Calls
This attribute counts the total number of audio 3.1 KHz calls that have been rejected by this DcmeLink because there was no preestablished LC available. This counter wraps to zero when it exceeds its maximum.
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IPHost Network monitor allows you to monitor dclRejected3kHzCalls 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 secure routers right now.